CN113756402A

CN113756402A - Filling type flush toilet

Info

Publication number: CN113756402A
Application number: CN202111067377.5A
Authority: CN
Inventors: D·格罗弗; 石山大悟; C·布赫; T·勒; J·麦克黑尔
Original assignee: American Co ltd AS
Current assignee: American Co ltd AS
Priority date: 2014-09-12
Filing date: 2015-09-14
Publication date: 2021-12-07
Also published as: JP2020041409A; CR20170137A; JP6987826B2; EP3191652B1; CO2017003510A2; PE20170857A1; WO2016040957A1; SV2017005407A; CN110042894A; MX2021004132A; CN110042894B; MX2017003186A; ECSP17022604A; CA2960033C; JP6794360B2; CN107002399B; AU2015314737A1; JP2021073392A; CA3185324A1; CL2017000602A1

Abstract

A valve assembly for a toilet, a multi flush valve assembly, a toilet and an assembly set for use in a toilet. The valve assembly includes a valve body including a coupling for associating the valve body with a second valve body of a second valve assembly, and a bonnet. The multi-flush valve assembly includes a first valve assembly including a first valve body including a first junction and a first valve cover; the second valve assembly comprises a second valve body and a second valve cover, wherein the second valve body comprises a second connecting part; wherein the first and second valve assemblies are configured to associate with each other by interlocking the first and second joints.

Description

Filling type flush toilet

The present application is a divisional application of patent application No. 201910176801.6, filed on 2015, 9/14 and named as "filling type toilet bowl".

Cross Reference to Related Applications

The present application claims the benefit of U.S. provisional patent application No.62/049,736 entitled "Primed Siphonic hair", filed 2014 9, 12, 35 (e), and also claims priority in continuation of part of U.S. non-provisional patent application No.14/619,989 entitled "Primed Siphonic hair", filed 2015 2, 11, 35u.s.c. § 120, U.S. non-provisional patent application No.14/619,989 claiming priority in accordance with 35u.s.c. § 120 as a continuation of international patent application No. pct/201us 3/069961 issued 2013, 11, 13, 2013, international patent application No. pct/US2013/069961 entitled "Primed Siphonic hair", filed 2013, 4, 10, 35u.s.c. § 119(e), U.S. provisional patent application No.61/810,664 entitled "Primed Siphonic hair", filed 2014 9, 12, 11, and U.S. provisional patent application No.61/725,832 entitled "Primed Siphonic Flush Toilet" filed 11/13/2012. The entire disclosure of the above application is incorporated herein by reference in its entirety.

Technical Field

The present invention relates to the field of gravity powered toilets for removing human or other waste. The invention also relates to the field of toilets operating with a poured water delivery system to improve performance.

Background

Toilets for removing waste products such as human waste are well known. Gravity powered toilets typically include two main parts: a tank and a urinal. The tank and bowl may be separate components that are coupled together to form a toilet system (commonly referred to as a two-piece toilet) or may be combined into one integral unit (commonly referred to as an all-in-one toilet).

The tank, which is typically located above the rear of the bowl, contains water for initiating flushing of waste from the bowl to the sewer line, as well as water for refilling the bowl with fresh water. When the user wants to flush the toilet, he presses a flush handle on the outside of the tank, which is connected to a movable chain or lever on the inside of the tank. When the flush handle is depressed, it moves a chain or lever on the inside of the tank which acts to lift and open the flush valve, causing water to flow from the tank into the bowl, thereby initiating a toilet flush.

In a flush cycle, three basic objectives must be met. The first is to move solids and other waste to the drain. The second is to clean the bowl to remove any solid or liquid waste that has deposited or adhered to the surface of the bowl, and the third is to exchange the volume of pre-flush water in the bowl so that relatively clean water remains in the bowl between uses. The second requirement, cleaning of the bowl, is typically achieved by a hollow rim extending around the upper perimeter area of the toilet bowl. Some or all of the flush water is directed through the rim channel and flows through openings positioned therein to spread the water across the surface of the bowl and accomplish the desired cleaning. The third requirement is to refill the bowl with clean water, restore the seal depth to resist sewer gas backflow, and be ready for the next use and flush.

Toilets powered by gravity can be divided into two broad categories: direct flushing and siphoning. In a direct flush toilet, the water level in the toilet bowl remains relatively constant at all times. When the flush cycle is initiated, water flows from the tank and overflows into the bowl. This results in a rapid rise in the water level and excess water spills over the weir of the trapway, carrying with it liquid and solid waste. At the end of the flush cycle, the water level in the bowl naturally returns to an equilibrium level determined by the height of the weir.

In siphonic toilets, the trapway and other hydraulic channels are designed such that siphoning is initiated in the trapway as water is added to the bowl. The siphon tube itself is an upside down U-shaped tube that draws water from the toilet bowl to the down pipe. When the flush cycle is initiated, water flows into the bowl and overflows over the weir in the trapway more quickly than it leaves the outlet to the drain. Sufficient air is eventually removed from the lower leg of the trapway to initiate a siphon, which in turn draws the remaining water out of the bowl. The water level in the bowl when the siphon breaks is thus well below the level of the weir and a separate mechanism needs to be provided to refill the toilet bowl at the end of the siphonic flush cycle to re-establish the original water level and "protective seal" against backflow of sewer gas.

Siphonic and direct flush toilets have inherent advantages and disadvantages. Siphonic toilets tend to have smaller trapways due to the requirement to move most of the air away from the lower leg of the trapway to initiate the siphon, which can lead to blockages. Direct flush toilets can function through large drain passages, but generally require a smaller amount of pre-flush water in the bowl to achieve the 100: 1 (i.e., 99% of the pre-flush volume in the bowl must be removed from the bowl and replaced with fresh water during a flush cycle). This small pre-flush volume is expressed itself as a small "water holding surface area". This water holding surface area or the surface area of the pre-flush water in the bowl plays an important role in maintaining the cleanliness of the toilet. The large water holding surface area increases the likelihood that waste will contact the water before contacting the ceramic surfaces of the toilet. This reduces the sticking of waste to the ceramic surface, making it easier for the toilet to clean itself via a flush cycle. Therefore, the direct flush toilet having a small water storage surface area requires frequent manual cleaning of the bowl after use.

Siphonic toilets have the advantage of being able to function with a greater amount of pre-flush water and a greater surface area for the water stored in the bowl. This is possible because at the end of the flush cycle, the siphoning action draws most of the pre-flush water from the bowl. When the tank is refilled, a portion of the refill water can be introduced into the bowl to return the volume of pre-flush water to its original level. In this way, 100 is achieved, which is required in many pipe specifications: 1 dilution level, even though the amount of starting water in the bowl is significantly higher relative to the flush water leaving the tank. Siphonic toilets have gained wide acceptance in the north american market and are now considered to be the standard, accepted form of toilet. In the european market, the direct flush toilet is still more accepted and popular, and both versions are common in the asian market.

Siphonic toilets powered by gravity can be further divided into three broad categories, depending on the design of the hydraulic channel used to effect the flushing action. These categories are: non-jet, rim jet, and direct jet.

In a non-jetted urinal, all of the flush water exits the tank into the urinal inlet area and flows through the main manifold into the rim channel. Water is distributed around the perimeter of the bowl via a series of holes positioned below the rim. Some of the holes may be sized larger to allow a greater amount of water to flow into the bowl. A relatively high flow rate is required to overflow the water quickly enough above the weir of the trapway to displace enough air in the lower leg and initiate a siphon. Non-jetted urinals generally have sufficiently good performance in terms of cleaning of the urinal and exchange of pre-flush water, but relatively poor performance in terms of object removal. The feeding of water to the trapway is inefficient and turbulent, which makes it more difficult to adequately fill the lower leg of the trapway and initiate a strong siphon. Thus, the trapway of a non-jet toilet is typically smaller in diameter and contains bends and constrictions designed to impede water flow. Without the smaller size, bending and shrinking, strong siphoning cannot be achieved. Unfortunately, the smaller size, bending and shrinkage results in poor performance in terms of bulk waste removal and results in frequent blockage conditions, which are highly undesirable to the end user.

Designers and engineers of toilets have improved the bulk waste removal of siphonic toilets by employing "siphon jets". In a side-jet toilet bowl, flush water exits the tank, flows through the toilet inlet area and through the main manifold into the rim channel. Some of the water is distributed around the perimeter of the bowl via a series of holes positioned below the rim. The remaining part of the water flows through the spray channels positioned at the front of the rim. The jet channel connects the rim channel to a jet opening positioned in a sump of the bowl. The jet opening is sized and positioned to deliver a powerful water stream directly at the opening of the trapway. When water flows through the jet opening, it serves to fill the trapway more efficiently and faster than can be achieved with non-jet urinals. This more forceful and rapid water flow to the trapway enables a toilet to be designed with a larger trapway diameter and less bending and pinching, which in turn improves performance in terms of bulk waste removal relative to non-jet urinals. Although a smaller amount of water flows out of the rim spray toilet, the bowl cleaning function is often acceptable because the water flowing through the rim channel is pressurized by the upstream flow of water from the tank. This allows the water to exit the rim aperture with higher energy and perform more efficient work on cleaning the bowl.

While side-flush urinals are generally preferred over non-flush urinals, the long drain passage through which water must travel from the rim to the flush opening dissipates and wastes a significant amount of the available energy. Direct injection urinals are improved on this concept and achieve better performance in terms of bulk waste removal. In a direct injection urinal, flush water exits the tank and flows through the urinal inlet and through the main manifold. Here, the water is divided into two parts: a portion flows through the rim inlet port to the rim channel, the primary purpose of which is to achieve the desired bowl cleaning; the second portion flows through the jet inlet port to a "direct injection passage" that connects the primary manifold to the jet opening in the sump of the toilet bowl. The direct injection passage can take different forms, sometimes one-way around one side of the toilet, or "double-fed", in which the symmetrical passage descends to the injection opening on both sides connected to the manifold. As with side-jet urinals, the jet opening is sized and positioned to deliver a powerful stream of water directly at the opening of the trapway. When water flows through the jet opening, it serves to fill the trapway more efficiently and faster than can be achieved with a non-jet or side-flush toilet. This more forceful and rapid water flow to the trapway enables toilets to be designed with even larger trapway diameters and with minimal bending and pinching, which in turn improves performance in terms of bulk waste removal relative to non-jetted and side-jetted urinals.

Although direct-feed jet urinals currently represent the state of the art for the removal of large amounts of waste to a large extent, there is still a major aspect of toilet performance that needs to be improved. Government agencies have continually demanded that municipal water consumers reduce the amount of water they use. In recent years, much focus has been on reducing the water required for toilet flushing operations. To illustrate this, government agencies have gradually reduced the amount of water used for each flush of toilets from 7 gallons/flush before the 50's of the 20 th century to 5.5 gallons/flush at the end of the 60's of the 20 th century and again to 3.5 gallons/flush at the 80's of the 20 th century. The national energy policy act of 1995 now requires that toilets sold in the united states use only 1.6 gallons per flush (6 liters per flush) of water. Recent regulations in the state of california have required water consumption to be further reduced to 1.28 gallons/flush. When pushed to these water consumption levels, the 1.6 gallon/flush toilets described in the current patent literature and available on the market will lose the ability to continue siphoning. Accordingly, manufacturers are and will continue to be forced to reduce trapway diameters and sacrifice toilet performance unless improved technology and toilet designs are developed.

Several inventions aim to improve the performance of siphonic toilets by optimization of the direct injection concept. For example, U.S. Pat. No.5,918,325 improves the performance of siphonic toilets by improving the shape of the trapway. U.S. patent No.6,715,162 improves performance by using a flush valve with a rounded inlet and a water asymmetric inflow bowl.

U.S. patent No.8,316,475B2 shows a pressurized rim and direct feed spray configuration that can use low water volume to enhance cleaning and sufficient siphoning to meet current environmental water use standards.

U.S. patent publication No.2012/0198610Al also shows a high performance toilet in which a control in the main manifold splits the flow of flush water entering the toilet manifold from the tank inlet into two portions, an inlet port into the rim and an inlet port into the direct-feed jet. U.S. patent No.2,122,834 shows a toilet having an air manifold and a hydraulic manifold for introducing air into the toilet flush cycle to terminate the siphoning action and prevent system backflow. Other inventions have attempted to solve the performance problem between the rim and the spray by dividing the tank into separate sections. See U.S. patent No.1,939,118.

When the flush volume is as low as about 6.0 liters, it is extremely important to minimize turbulence and flow restriction in the internal passages of the toilet. One of the most significant factors in minimizing turbulence and flow restriction is managing the air that occupies the outer rim and jet channel prior to initiating the flush cycle. If the air is not able to leave the system before an oncoming flush of the flush water, it will continue to occupy channel space and restrict flow. U.S. patent No.5,918,325 describes a toilet with a jet channel that includes an air vent and a passageway connecting the jet channel to the rim, allowing air to escape from the jet channel to the rim when flushing. U.S. patent publication No.2012/0198610a1 discloses a toilet with a downstream communication port that also enables air and/or water to flow between the jet channel and the rim channel.

There remains a need in the art for further improvements in siphonic toilet performance, particularly in managing the pre-flush air occupying the jet channel. There is also a need in the art for a toilet that improves upon the above-mentioned deficiencies of existing toilets, that resists clogging, and that provides significantly improved cleaning during flushing without sacrificing flushing performance. While providing adequate siphoning, such toilets should also meet water conservation standards and government guidelines with low drain water consumption for various geometries.

Disclosure of Invention

A siphonic flush toilet assembly comprising at least one jet flush valve assembly having a jet flush valve inlet and a jet flush valve outlet, the jet flush valve assembly configured for delivering fluid from the jet flush valve outlet to a closed jet fluid path; at least one rim valve having a rim valve inlet and a rim valve outlet, the rim valve configured for delivering fluid from the outlet of the rim valve to the rim inlet port; and a bowl having an interior surface defining an interior bowl area, the bowl including (a) at least one rim inlet port for introducing water into an upper peripheral area of the bowl; (b) a jet defining at least one jet channel, the jet having an inlet port in fluid communication with the jet flush valve and a jet outlet port located in a lower portion of the bowl and configured for discharging fluid to a sump area of the bowl, wherein the sump area is in fluid communication with an inlet to a trapway, the trapway having a weir, and the closed jet fluid pathway includes the jet channel; wherein the jet flush valve is located above the weir of the trapway, and wherein the closed jet fluid pathway comprises a jet channel extending from the jet flush valve outlet to the outlet of the jet, and once primed, the closed fluid pathway can remain primed with fluid and help prevent air from entering the closed jet fluid pathway before the initiation and after completion of a flush cycle.

In an embodiment, the toilet bowl assembly may further comprise a rim manifold, wherein the rim manifold has a rim manifold inlet opening for receiving fluid from the outlet of the rim flush valve assembly and a rim manifold outlet opening for delivering fluid to the rim inlet port. In this embodiment, the bowl may further include a rim extending at least partially around an upper perimeter of the bowl, the rim defining a rim channel extending from the rim inlet port around the upper perimeter of the bowl, and the rim having at least one rim outlet port in fluid communication with the interior area of the bowl, and wherein the rim inlet port is in fluid communication with the rim manifold outlet opening.

In another embodiment of the assembly, the bowl may have a rim including a rim shelf extending laterally from the rim inlet port at least partially around the bowl in an upper peripheral region thereof along the interior surface of the bowl such that fluid can travel along the rim shelf and enter the interior space of the bowl in at least one location offset from the rim inlet port.

The assembly may also include a tank configured to receive fluid from a fluid source, the tank including at least one fill valve. The water tank may include at least one jet reservoir and at least one rim reservoir, the jet reservoir including a jet fill valve and at least one jet flush valve assembly, and the rim reservoir including the at least one rim valve. In this embodiment, the rim reservoir may further comprise a rim fill valve, the rim valve is a rim flush valve assembly and the rim flush valve assembly comprises an overflow tube.

At least a portion of the inner wall of the toilet bowl within the sump area may also be configured to slope upwardly from the jet outlet port toward the inlet of the trapway.

The toilet assembly is preferably capable of operating at a flush volume of no more than about 6.0 liters, more preferably the toilet is capable of operating at a flush volume of no more than about 4.8 liters, and in some embodiments the toilet is capable of operating at a flush volume of no more than about 2.0 liters.

The at least one jet channel may also be positioned to extend at least partially around a lower portion of the exterior surface of the bowl.

In one embodiment, the sump area of the bowl has a jet trap defined by an interior surface of the bowl and having an inlet end and an outlet end, wherein the inlet end of the jet trap receives fluid from the jet outlet port and the interior area of the bowl and the outlet end of the jet trap is in fluid communication with the inlet to the trapway; wherein the jet trap has a water seal depth. A surface of the jet outlet port may be within the jet trap and positioned at a seal depth below an upper surface of the inlet to the trapway, the seal depth being measured longitudinally through the sump region. The jet trap water seal depth may be from about 1cm to about 15cm, preferably from about 2cm to about 12cm, and further may be from about 3cm to about 9 cm.

In one embodiment of the assembly, the rim valve may be a rim flush valve assembly having a rim flush valve body extending from the rim flush valve inlet to the rim flush valve outlet, and a rim flush valve cover (e.g., flapper cover).

The at least one jet channel may also be positioned to pass at least partially under the bowl. In an embodiment, the jet flush valve assembly may include a flush valve cover and a jet flush valve body extending from the jet flush valve inlet to the jet flush valve outlet, and wherein the jet flush valve further includes a backflow prevention mechanism.

The flush valve cover herein on the jet flush valve assembly or the optional rim flush valve assembly may be formed to be at least partially flexible and capable of being peeled upward when opened.

When provided, the anti-backflow mechanism may be one or more of a hold-down linkage mechanism, a hook and catch mechanism, a poppet valve mechanism, and a check valve.

The jet flush valve assembly may also include a flush valve cover and a jet flush valve body extending from the jet flush valve inlet to the jet flush valve outlet. In such embodiments, the flush valve cover may be formed to be at least partially flexible and capable of being peeled upwardly when opened. The jet flush valve cover may further include an articulated arm and/or at least one grommet for connecting a chain having a float thereon. In embodiments having an at least partially flexible cover, the assembly may further include a backflow prevention mechanism.

Also disclosed is a method for maintaining a siphonic flush toilet bowl assembly in a primed state, the method comprising (a) providing a toilet bowl assembly comprising at least one jet flush valve assembly having a jet flush valve inlet and a jet flush valve outlet, the jet flush valve assembly configured for delivering fluid from the jet flush valve outlet to a closed jet fluid path; at least one rim valve having a rim valve inlet and a rim valve outlet, the rim valve configured for delivering fluid from the outlet of the rim valve to the rim inlet port; and a bowl having an interior surface defining an interior bowl area, the bowl including (i) at least one rim inlet port for introducing water into an upper peripheral area of the bowl; (ii) a jet defining at least one jet channel, the jet having an inlet port in fluid communication with the outlet of the jet flush valve and a jet outlet port located in a lower portion of the bowl and configured for discharging fluid to a sump area of the bowl, wherein the sump area is in fluid communication with an inlet to a trapway, the trapway has a weir, and the closed jet fluid pathway includes the jet channel; the jet flush valve is positioned above the weir of the trapway and the closed jet fluid pathway comprises a jet channel extending from the jet flush valve outlet to the outlet port of the jet, the closed fluid pathway, once primed, being capable of remaining primed with fluid and helping to prevent air from entering the closed jet fluid pathway before the initiation and after completion of a flush cycle; (b) starting a flushing cycle; (c) providing fluid through the at least one jet flush valve assembly and the at least one rim valve; and (d) maintaining the closed jetting fluid pathway in a primed state after completion of a flush cycle. In a preferred embodiment, flow continues until the level of the sump is above the nozzle outlet port.

In the above-described method, the toilet bowl assembly may further comprise a rim manifold, wherein the rim manifold has a rim manifold inlet opening configured to receive fluid from the outlet of the rim valve and a rim manifold outlet opening for delivering fluid to the rim inlet port; wherein the bowl includes a rim around an upper perimeter of the bowl, and the rim defines a rim channel extending from the rim inlet port at least partially around the upper perimeter of the bowl, and the rim has at least one rim outlet port in fluid communication with the interior area of the bowl, and wherein the rim inlet port is in fluid communication with the rim channel and with the rim manifold outlet opening; and the method further comprises introducing fluid from the rim valve outlet into the interior region of the bowl through the rim manifold inlet, the rim manifold outlet, the rim inlet port, the rim channel, and the at least one rim channel outlet port.

In an embodiment of the method, the rim includes a rim shelf extending laterally along the interior surface of the bowl in an upper peripheral region thereof from the rim inlet port at least partially around the interior surface of the bowl, the method may further include introducing fluid from the rim shelf inlet port so that it travels along the rim shelf and enters the interior space of the bowl at least one location offset from the rim inlet port.

The toilet bowl assembly may further include a tank configured to receive fluid from a fluid source, the tank including at least one fill valve, and the method further includes filling the tank with the at least one fill valve and providing fluid from the tank to the bowl through the at least one jet flush valve assembly and the at least one rim valve. The water tank includes at least one jet reservoir and at least one rim reservoir, the jet reservoir includes a jet fill valve and at least one jet flush valve assembly configured for delivering fluid to the nozzle inlet port, the rim reservoir includes at least one rim valve and is configured to deliver fluid to the rim inlet port through the at least one rim valve, and the method further includes filling the at least one jet reservoir with fluid from the at least one fill valve prior to initiation of a flush cycle. The at least one rim reservoir may also include a rim fill valve, and the method further comprises filling the at least one rim reservoir with the rim fill valve.

The method may also further comprise maintaining a liquid level in the at least one jet reservoir above the jet flush valve assembly inlet through the at least one fill valve of the water tank after a flush cycle is completed.

In another embodiment of the invention, within the jet trap, an upper surface of the jet outlet port may be configured to be positioned at a seal depth below an upper surface of the inlet to the trapway, the seal depth being measured longitudinally through the sump region, and the method may further comprise maintaining the seal depth to facilitate priming of the closed jet fluid path with fluid from the jet flush valve assembly before initiation and after completion of a flush cycle.

Also disclosed is a siphonic flush toilet bowl assembly comprising at least one jet flush valve assembly configured for delivering fluid to a direct-fed jet and at least one rim valve configured for delivering fluid to a rim; a rim manifold, wherein the rim manifold has a rim manifold inlet opening configured to receive fluid from the rim valve and a rim manifold outlet opening for delivering fluid to a rim inlet port; a bowl having an interior surface defining an interior bowl area, and the bowl having (a) a rim disposed about an upper perimeter area of the bowl and defining a rim channel having an inlet port in fluid communication with the rim manifold outlet opening and at least one rim outlet port in fluid communication with the interior area of the bowl, (b) a jet defining at least one jet channel having an inlet port in fluid communication with the jet flush valve assembly outlet and for receiving fluid from the jet flush valve assembly, and a jet outlet port configured for discharging fluid to a sump area at the bottom of the bowl, wherein the sump area is in fluid communication with an inlet of a trapway, and (c) the sump area of the bowl having a jet trap defined by the interior surface of the bowl and having an inlet end and an outlet end, wherein the inlet end of the jet trap receives fluid from the jet outlet port and the interior area of the bowl and the outlet end of the jet trap is in fluid communication with the inlet to the trapway; and the jet trap has a seal depth sufficient to maintain the jet channel and jet manifold primed with fluid from the jet flush valve assembly before and after the flush cycle is initiated and completed, thereby helping to prevent air from entering the closed jet fluid path before and after the flush cycle is initiated and completed.

Also disclosed is a siphonic flush toilet bowl assembly comprising at least one jet flush valve assembly configured for delivering fluid to a direct-fed jet and at least one rim valve configured for delivering fluid to a rim inlet port of an upper peripheral portion of the bowl; a bowl having an interior surface defining a bowl interior area, and the bowl having (a) an upper peripheral portion surrounding an upper periphery of the bowl, the upper peripheral portion being configured to direct fluid from the rim inlet port at least partially around the upper peripheral portion of the bowl and into the sump area, (b) a jet defining at least one jet channel, the jet having an inlet port in fluid communication with the outlet of the jet flush valve assembly and a jet outlet port located in a lower portion of the bowl and configured to discharge fluid to the sump area, wherein the sump area is in fluid communication with the inlet of the trapway, and (c) the sump area located at the bottom of the bowl having a jet trap defined by the interior surface of the bowl and having an inlet end and an outlet end, wherein the inlet end of the jet trap receives fluid from the jet outlet port and the interior region of the bowl, the outlet end of the jet trap being in fluid communication with the inlet to the trapway; and the jet trap is configured to have a seal depth sufficient to maintain the jet channel and jet manifold primed with fluid from the jet flush valve assembly before and after a flush cycle is initiated and completed, thereby helping to prevent air from entering the closed jet fluid path before and after a flush cycle is initiated and completed.

The present invention also includes a method of maintaining a siphonic flush toilet bowl assembly in a primed state, the method comprising (a) providing a toilet bowl assembly comprising at least one jet flush valve assembly having a jet flush valve inlet and a jet flush valve outlet, the jet flush valve assembly configured for delivering fluid from the jet flush valve outlet to a closed jet fluid path; at least one rim valve having a valve inlet and a rim valve outlet, the rim valve configured for delivering fluid from the outlet of the rim valve to a rim inlet port; and a bowl having an interior surface defining a bowl interior area, and wherein (i) the rim inlet port is configured to introduce water into one of (a) a rim disposed about an upper periphery of the bowl and the rim defines a rim channel extending from the rim inlet port about the upper periphery of the bowl, and the rim has at least one rim outlet port in fluid communication with the interior area of the bowl, the rim shelf extending laterally from the rim inlet at least partially about the bowl in an upper peripheral area thereof along the interior surface of the bowl, and (ii) a jet defines at least one jet channel, the jet having an inlet port in fluid communication with the outlet of the jet flush valve assembly and a jet outlet port located in a lower portion of the bowl and configured to discharge fluid to the bowl Wherein the sump region is in fluid communication with an inlet to a trapway, the trapway having a weir, and the closed jet fluid pathway comprising the jet channel; wherein the jet flush valve is located above a weir of the trapway, wherein the closed jet fluid pathway comprises a jet channel extending from the jet flush valve outlet to an outlet of the jet such that, once primed, the closed jet fluid pathway can remain primed with fluid, thereby helping to prevent air from entering the closed jet fluid pathway before a flush cycle is initiated and after completion; (b) starting a flushing cycle; (c) providing fluid through the at least one jet flush valve assembly at a flow rate sufficient to prevent air from entering the nozzle outlet and sufficient to create a siphon in the trapway; and (d) continuously reducing the flow rate of the fluid through the jet channel for about 1 to about 5 seconds until the siphon breaks.

The method of priming may further comprise said step (c) further comprising providing fluid through said at least one rim during a flush cycle. The method may further include initial priming of the bowl upon installation by providing a flow rate through the jet flush valve assembly outlet sufficient to prevent air from entering the jet outlet port before the sump is filled with fluid.

The method also includes a flush valve for a siphonic flush toilet bowl assembly, wherein the flush valve has a flush valve body extending from a flush valve inlet to a flush valve outlet and a flapper cover configured to extend over the flush valve inlet, wherein the flush valve further includes a backflow prevention mechanism. The anti-backflow mechanism is one or more of a hold-down linkage mechanism, a hook and catch mechanism, a poppet valve mechanism, and a check valve. The flush valve may also include a flush valve cover that is at least partially flexible and capable of being peeled upward when opened. The jet flush valve cover may also include a hinged base for assisting in lifting the cover and/or at least one grommet for connecting a chain having a float.

A flush valve for a siphonic flush toilet bowl assembly is also disclosed, the flush valve comprising a flush valve body extending from a flush valve inlet to a flush valve outlet and a flapper cover configured to extend over the flush valve inlet, wherein the flush valve cover is at least partially flexible and capable of being peeled upwardly when opened. In this embodiment, the flush valve further comprises a backflow prevention mechanism as described above or elsewhere herein.

Another embodiment of the present invention includes an adjustable flush connector for a toilet comprising a first segment having a first rotatable connector, a second segment, and an adjustable connector. The adjustable connector has a second rotatable connector and is longitudinally movable along the second section and rotatably positionable. The adjustable flush connector may be for use with a toilet, preferably a siphonic toilet.

The adjustable flush connector has a second section, wherein a portion of a surface of the second section and an inner surface of the adjustable connector defining a passageway therethrough are each threaded to allow the adjustable connector to be longitudinally adjustable along the second section and rotatably positionable about the second section.

In another embodiment of the adjustable flush connector, the first rotatable connector may be configured to be connectable with a pivoting lever. The second rotatable connector may be configured to be connectable with a flush activation rod. The flush actuating lever may comprise a first portion connected to the first valve assembly and a second portion connected to the second valve assembly.

Yet another embodiment of the present invention includes a flush actuation assembly for use in a toilet, the flush actuation assembly comprising: a flush activation rod including a first portion and a second portion, the first portion configured to connect with the first valve assembly and the second portion configured to connect with a second valve assembly; and a pivot rod. The flush activation lever is connected to the pivot lever with a connector. In another embodiment, the connector of the flush activation assembly is an adjustable flush connector positioned to operatively connect the pivot rod and the flush activation rod. The adjustable flush connector includes a first section, a second section, and an adjustable connector, wherein the adjustable connector includes a second rotatable connector and the adjustable connector is longitudinally movable along the second section of the adjustable flush connector and rotatably positionable. The adjustable flush connector is connected with the pivot rod with a first rotatable connector located on the first section of the adjustable flush connector, and the adjustable flush connector is connected with the flush actuation rod with the second rotatable connector of the adjustable connector.

A portion of a surface of the second section of the adjustable flush connector and an inner surface of the adjustable connector defining a passageway therethrough may each be threaded to allow the adjustable connector to be adjusted longitudinally along the second section of the adjustable flush connector and the second section of the adjustable flush connector to be adjusted rotationally. The first portion of the flush actuation lever may also be configured to connect with a peripheral valve assembly. The second portion of the flush actuation lever may be configured to connect with a jetting valve assembly.

At least one of the first portion of the flush actuation lever and the second portion of the flush actuation lever may be configured to connect with a valve assembly having a valve body and a valve cover, the valve cover including a seal and a rigid cover configured to enable the seal to flex to progressively open the valve. The seal may include a sealing surface and a locking surface, wherein the locking surface includes a plurality of locking lugs positioned on the locking surface to engage a plurality of corresponding openings in the rigid cover. Further, the seal may include a sealing surface and a locking surface, and at least the sealing surface may comprise silicone.

Another embodiment of the invention includes a valve cover for a flush valve assembly having a flush valve including a valve body, wherein the valve cover is positioned above the valve body. The valve cover includes a seal and a rigid cover configured to enable the seal to flex to progressively open the valve cover.

The seal may include a sealing surface and a locking surface, wherein the locking surface may include a plurality of locking lugs positioned on the locking surface to engage a plurality of corresponding openings in the rigid cover. Each locking lug may comprise a head and a neck, wherein a distance measured along a transverse line across a cross-section of a top surface of the neck may be less than a distance measured along a transverse line across a cross-section of a bottom surface of the head. The plurality of locking lugs may be arranged in a first row, a second row, and a third row. The first row may be located about 5mm to about 15mm from a point on the leading edge of the cover located on a central vertical longitudinal plane through the valve cover, the second row may be located about 40mm to about 50mm from the point, and the third row may be located about 60mm to about 80mm from the point.

The first, second and third rows of locking lugs on the locking face may each comprise at least one locking lug. Each locking lug may include a head and a neck, wherein the neck may have a generally cylindrical shape and the head may have a generally conical shape with a rounded top surface. The heads of the first and second rows of locking lugs may be generally flat along a side facing a central vertical longitudinal plane of the valve cover. In one embodiment, at least the sealing surface of the valve cover may comprise silicone.

In another embodiment of the valve cover, the rigid cover may include a peeling section and a lifting section. There may be a lateral spacing between the trailing edge of the peeling section and the leading edge of the lifting section, and the trailing edge of the peeling section and the leading edge of the lifting section may be substantially parallel to each other and substantially perpendicular to the central longitudinal plane, and the lateral distance measured from the trailing edge of the peeling section to the leading edge of the lifting section may be from about 10mm to about 20 mm. The peeling section may include at least one hinged mount configured to connect with the lifting section.

The seal of the valve cover may be positioned in opposing engagement with the peeling section and the lifting section of the rigid cover. The seal may also be connected to the peeling section and the lifting section through the use of a plurality of locking lugs and/or through the use of an adhesive. The peel-away section may be configured to interact with the flush actuation lever and/or may include a float attachment.

Another embodiment of the present invention is a valve assembly for a toilet. The valve assembly includes a valve body including a junction for associating the valve body with a second valve body of a second valve assembly, and a bonnet.

In the valve assembly included above, the valve cap may include a flush valve body, wherein the valve cap is positioned above the valve body, the valve cap comprising: a seal member; and a rigid cover configured to enable bending of the seal to gradually open the valve cover. The seal may include a sealing surface and a locking surface, wherein the locking surface may include a plurality of locking lugs positioned on the locking surface to engage a plurality of corresponding openings in the rigid cover.

The present invention also includes a multi-flush valve assembly comprising: a first valve assembly including a first valve body, a first coupling portion, and a first bonnet; and a second valve assembly comprising a second valve body, a second junction, and a second valve cover, wherein the first valve assembly and the second valve assembly are configured to be associated with each other by interlocking the first junction and the second junction.

The first link portion of the multiple flush valve assembly may have a downward hook portion and the second link portion may have an upward protrusion configured to interlock with the downward hook portion to maintain alignment of the first valve assembly with the second valve assembly.

Another embodiment of the present invention is a siphonic flush toilet, comprising: a first valve assembly; a second valve assembly; and a flush actuation assembly comprising a flush actuation rod comprising a first portion and a second portion, the first portion configured to connect with the first valve assembly and the second portion configured to connect with the second valve assembly; a pivot rod; and an adjustable flush connector positioned to operatively connect the pivot rod and the flush activation rod, the adjustable flush connector comprising a first section, a second section, and an adjustable connector, wherein the adjustable connector comprises a second rotatable connector and the adjustable connector is longitudinally movable along the second section and rotatably positioned, and the adjustable flush connector is connected with the pivot rod using a first rotatable connector located on the first section of the adjustable flush connector, and the adjustable flush connector is connected with the flush activation rod using the second rotatable connector of the adjustable connector.

In the siphonic toilet, the first valve assembly may be a rim flush valve assembly. Further, within the toilet, the second valve assembly may be a jet flush valve assembly.

In one embodiment, there is provided a toilet bowl, the toilet bowl comprising: a toilet bowl; a flush actuation assembly; and a multi-flush valve assembly comprising a first valve body comprising a first junction and a first valve cap; and a second valve assembly including a second valve body and a second valve cover, the second valve body including a second coupling, wherein the first valve assembly and the second valve assembly are configured to be associated with each other by interlocking the first coupling and the second coupling.

The first link portion of this embodiment of the toilet assembly may have a downward hook portion and the second link portion may have an upward projection configured to interlock with the downward hook portion to maintain alignment of the first and second valve assemblies.

Yet another embodiment of the present invention includes an assembly kit for use in a toilet, the toilet comprising: a first valve assembly; a second valve assembly; and a flush actuation assembly comprising a flush actuation rod comprising a first portion and a second portion; a pivot rod; and an adjustable flush connector positioned to operatively connect the pivot rod and the flush activation rod, the adjustable flush connector comprising a first section, a second section, and an adjustable connector, wherein the adjustable connector comprises a second rotatable connector and the adjustable connector is longitudinally movable along the second section and rotatably positioned, and the adjustable flush connector is connected with the pivot rod using a first rotatable connector located on the first section of the adjustable flush connector, and the adjustable flush connector is connected with the flush activation rod using the second rotatable connector of the adjustable connector. The second valve assembly may also have a float attachment. The float attachment may be selected from the group consisting of a float assembly, a chain, a tether, a rope, a cord, a stainless steel cable, a rigid rod, or a wire.

Another embodiment of the invention includes an embodiment of a kit for use in a toilet, the toilet comprising: a flush actuation assembly; and a multi-flush valve assembly, wherein the multi-flush valve assembly comprises a first valve assembly comprising a first valve body comprising a first junction and a first valve cap; and a second valve assembly including a second valve body and a second valve cover, the second valve body including a second coupling, wherein the first valve assembly and the second valve assembly are associated with each other by interlocking the first coupling and the second coupling.

In an embodiment of the above kit of parts, the kit may further comprise a tank-to-bowl gasket tool, wherein the multi-flush valve assembly may comprise a first tank-to-bowl gasket and a second tank-to-bowl gasket, the first and second tank-to-bowl gaskets comprising a rim and the tank-to-bowl gasket tool may be configured to fit the rim of the tank-to-bowl gasket and may be used as a wrench to attach the tank-to-bowl gasket on a toilet tank.

Drawings

The foregoing summary, as well as the following detailed description of preferred embodiments of the invention, will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there is shown in the drawings embodiments which are presently preferred. It being understood that the invention is not limited to the precise arrangements and instrumentalities shown. In the drawings:

FIG. 1 is a perspective view of a siphonic toilet bowl assembly according to an embodiment of the present invention showing the interior of a tank having a jet flush valve assembly and a rim flush valve assembly;

FIG. 2 is a front view of the toilet bowl assembly of FIG. 1 showing the interior of the tank;

FIG. 3 is a perspective view of the toilet assembly of FIGS. 1-2 taken along line 3-3;

FIG. 3A is a perspective view of the bowl of the embodiment of FIG. 1 showing a rim-curved around the bottom of the outer surface of the bowl in the jet channel jet fluid path;

fig. 3B is a perspective view of the urinal in the embodiment of fig. 1, illustrating a rim shelf flow path;

3C-3G are schematic illustrations of the interior space being perfused within the closed jet fluid path in the embodiment of FIG. 1, the closed flow path including dual jet channels having dual flow paths as shown in FIG. 3A;

FIG. 4A is a top view of the toilet assembly of FIG. 1;

FIG. 4B is a top view of the bowl portion of the toilet assembly showing the jet manifold opening and rim manifold opening;

FIG. 5 is a longitudinal cross-sectional view of the toilet assembly of FIG. 1 taken along line 5-5 of FIG. 2 with the flush valve omitted;

FIG. 6 is a greatly enlarged portion of the toilet assembly of FIG. 5, showing the nozzle outlet;

FIG. 7 is a longitudinal cross-sectional view taken along line 7-7 of FIG. 8;

FIG. 8 is a top plan view of the toilet assembly of FIG. 1 with the lid removed from the tank;

FIG. 9 is a perspective view of a jet flush valve of the toilet assembly of FIG. 1;

FIG. 10 is a side view of the jet flush valve of the toilet assembly of FIG. 9;

FIG. 11 is a front elevational view of the jet flush valve of the toilet assembly of FIG. 9;

FIG. 12 is a front view of a rim flush valve with an overflow tube of the toilet assembly of FIG. 1;

FIG. 13 is a perspective view of the peripheral flush valve of FIG. 12;

FIG. 14 is a side view of the peripheral flush valve of FIG. 12;

FIG. 15 is a perspective view of the outer rim of the toilet assembly and flush actuator lever of the jet valve of FIG. 1;

FIG. 16 is a front perspective view of a siphonic toilet bowl assembly having a rim channel and at least one rim outlet port according to one embodiment of the present invention;

FIG. 17 is a cross-sectional top view of the siphonic toilet bowl of FIG. 1, showing a rim channel inlet port and initial rim and jet flow;

FIG. 18 is a cut-away perspective view of the siphonic toilet bowl assembly of FIG. 17;

FIG. 19 is a partial top view of the siphonic toilet bowl assembly of FIG. 1;

FIG. 20 is a partial top view of an alternative embodiment of the siphonic toilet bowl assembly of FIG. 1, the embodiment having a jet reservoir and a rim reservoir;

FIG. 21 is a longitudinal cross-sectional view of the siphonic toilet bowl assembly of FIG. 19, taken along line 21-21, illustrating the flow of fluid to the jet after removal of the jet flush valve assembly;

FIG. 22 is a greatly enlarged, partially cut-away cross-sectional view of the sump area of FIG. 21;

FIG. 23 is a longitudinal cross-sectional view of an alternative embodiment of the toilet bowl assembly of FIG. 21, illustrating the flow of fluid to the jet after removal of the jet flush valve assembly, and wherein at least a portion of the wall of the toilet bowl in the sump area slopes upwardly from the jet outlet port toward the trapway inlet;

FIG. 24 is a greatly enlarged, partially cut-away cross-sectional view of the sump area of FIG. 23;

FIG. 25 is an isometric longitudinal cross-sectional view of an alternative embodiment of the siphonic toilet bowl assembly of the present invention, wherein jet fluid flows through the underside of the bowl and shows the flow of fluid to the rim after the rim flush valve assembly is removed;

FIG. 26 is a longitudinal cross-sectional view of the siphonic toilet bowl assembly of FIG. 25, illustrating the flow of fluid through the jet;

FIG. 27 is a greatly enlarged, partially cut-away cross-sectional view of the sump area of FIG. 26;

FIG. 28 is an isometric longitudinal cross-sectional view of an alternative embodiment of the siphonic toilet bowl assembly of the present invention, showing the flow of fluid to the upper peripheral portion of the rim with the rim flush valve and the jet flush valve assembly removed;

FIG. 29 is a cross-sectional view of the toilet of FIG. 4B, illustrating different longitudinal cross-sectional views of the peripheral shelf of FIGS. 30-34;

FIG. 30 is an enlarged longitudinal cross-sectional view taken along line 30-30 of FIG. 29 showing the depth of the rim shelf and the elevation of the area formed within the upper peripheral region of the toilet bowl at the location of the rim shelf proximate the location of the rim inlet port;

FIG. 31 is an enlarged longitudinal cross-sectional view taken along line 31-31 of FIG. 29 showing the depth of the rim shelf and the height of the area formed in the upper peripheral region of the toilet bowl at the location of the rim shelf approximately midway between the front and rear portions of the bowl;

fig. 32 is an enlarged longitudinal cross-sectional view taken along line 32-32 of fig. 29 showing the depth of the rim shelf and the height of the area formed at the location of the rim shelf at the front location of the bowl formed within the upper peripheral area of the toilet bowl.

FIG. 33 is an enlarged longitudinal cross-sectional view taken along line 33-33 in FIG. 29 showing the depth of the rim shelf and the height of the area formed in the upper peripheral region of the toilet bowl at the location of the rim shelf approximately midway between the front and rear portions of the bowl on the opposite side of the bowl from the view in FIG. 31;

fig. 34 is an enlarged longitudinal cross-sectional view taken along line 34-34 in fig. 29 showing the depth of the rim shelf and the height of the area formed in the upper peripheral region of the toilet bowl at the location of the rim shelf at the rear location of the bowl.

FIG. 35 is a front view of an injection valve used in an embodiment of the present invention, shown in an open state, having a flapper and a backflow prevention mechanism with a hold-down link;

FIG. 36 is a right side elevational view of the injection valve of FIG. 35;

FIG. 37 is a front view of the injection valve of FIG. 35 in a closed condition;

FIG. 38 is a right side elevational view of the injection valve of FIG. 37;

FIG. 39 is a bottom perspective view of yet another injection valve used in an embodiment of the present invention, shown in a closed position, in this embodiment having a flapper and a lower spool opening;

FIG. 40 is a top perspective view of the injection valve of FIG. 39;

FIG. 41 is a front view of the injection valve of FIG. 39;

FIG. 42 is a right side elevational view of the injection valve of FIG. 39;

FIG. 43 is a longitudinal cross-sectional view of the injection valve of FIG. 39;

FIG. 44 is a bottom perspective view of the injection valve of FIG. 39 in an open state;

FIG. 45 is a top perspective view of the injection valve of FIG. 44 illustrating the internal rib structure of the star configuration;

FIG. 46 is a front view of the injection valve of FIG. 44;

FIG. 47 is a right side elevational view of the injection valve of FIG. 44;

FIG. 48 is a longitudinal cross-sectional view of the injection valve of FIG. 44;

FIG. 49 is a top perspective view of yet another injection valve for use with embodiments of the present invention, the injection valve shown in a closed position and having a backflow prevention mechanism that includes a peel-back flapper cover and a hinge mechanism having a hook;

FIG. 50 is a top view of the injection valve of FIG. 49;

FIG. 51 is a front view of the injection valve of FIG. 49;

FIG. 52 is a right side elevational view of the injection valve of FIG. 49;

FIG. 53 is an enlarged portion of the valve of FIG. 52 in the hook position

FIG. 54 is a top perspective view of the open state injection valve of FIG. 49 showing the ribs of the inner star;

FIG. 55 is a top plan view of the body of the injection valve of FIG. 49 showing the ribs of the inner star;

FIG. 56 is a longitudinal cross-sectional view taken along line 56-56 of FIG. 55;

FIG. 57 is a top perspective view of yet another embodiment similar to FIG. 49, with the ribs having a different internal star configuration;

FIG. 58 is a top plan view of the body of the injection valve of FIG. 57 showing the ribs of the inner star;

FIG. 59 is a longitudinal cross-sectional view taken along line 59-59 of FIG. 58;

FIG. 60 is a top perspective view of yet another injection valve for use with embodiments of the present invention, the injection valve being shown in a closed condition and having a backflow prevention mechanism including a peel-back flapper cover and hold-down link;

FIG. 61 is a top plan view of the injection valve of FIG. 60;

FIG. 62 is a front view of the injection valve of FIG. 60;

FIG. 63 is a right side elevational view of the injection valve of FIG. 60;

FIG. 64 is a perspective view of a variation of the injection valve of FIG. 49 for use in an embodiment of the present invention, shown in a closed condition, and having a backflow prevention device that includes a peel-back cover, but includes optional features: an overflow tube for accommodating a further backflow prevention device (e.g. a check valve);

FIG. 65 is a front view of the injection valve of FIG. 64;

FIG. 66 is a top plan view of the injection valve of FIG. 64;

FIG. 67 is a right side elevational view of the injection valve of FIG. 64; and

FIG. 68 is an enlarged portion of the injection valve of FIG. 67 showing a hook mechanism.

FIG. 69 is a front view of an assembly set of an embodiment of the present invention including a flush actuation assembly connected to two valve assemblies;

FIG. 70 is a top view of the component kit of FIG. 69;

FIG. 71 is a front elevational view of the adjustable flush connector and flush activation rod of the assembly set of FIG. 69;

FIG. 72 is a perspective view of the adjustable flush connector and flush activation rod of FIG. 71;

FIG. 73 is a perspective view of a valve cover for use in the accessory kit of FIG. 69;

FIG. 74 is a top view of the valve cover of FIG. 73;

FIG. 75 is a front view of the valve cover of FIG. 73;

FIG. 76 is a top view of a seal used in the valve cover of FIG. 73;

FIG. 77 is a front view of the seal of FIG. 76;

FIG. 78 is an enlarged front view of a portion of the component kit of FIG. 69 showing the attachment device;

FIG. 79 is an enlarged top plan view of the coupling device shown in FIG. 78;

FIG. 80 is an enlarged front view of a portion of one embodiment of the assembly kit of FIG. 69 with an integrated multiple flush valve assembly, showing the connectors;

FIG. 81 is an enlarged top plan view of the connector shown in FIG. 80;

FIG. 82 is an exploded view of the component kit of FIG. 69 in accordance with the first embodiment of the present invention;

FIG. 83 is an exploded view of the component kit of FIG. 69 in accordance with the second embodiment of the present invention;

FIG. 84 is an exploded view of a tank-to-bowl gasket set according to one embodiment of the present invention;

FIG. 85 is a front view of the assembly kit of FIG. 69 including an alternative embodiment of a connector within the flush activation assembly;

FIG. 86 is a front view of an alternative embodiment of the connector and flush activation rod of the kit of components of FIG. 85;

FIG. 87 is a front elevational view of a second alternate embodiment of the connector and flush activation rod of the kit of components of FIG. 85;

FIG. 88 is a perspective view of the component package of FIG. 69 modified to include an alternate embodiment of a float attachment;

FIG. 89 is a perspective view of a second valve assembly of the assembly set of FIG. 88 showing a float attachment; and

fig. 90 is a side view of the second valve assembly of fig. 89.

Detailed Description

As used herein, words such as "inner" and "outer", "upper" and "lower", "forward" and "rearward", "front" and "rear", "left" and "right", "upward" and "downward", and words of similar import, are intended to aid in the understanding of the preferred embodiments of the present invention with respect to the orientation of the toilet assembly shown, and are not intended to limit the scope of the invention or to limit the scope of the invention to the preferred embodiments shown in the drawings.

Embodiments

10, 1010, 110, 210, 310, 410, etc. herein use like reference numerals to refer to like features of the invention described herein and shown in the drawings, such that for a particular feature, without language contrary to the disclosure to describe alternative configurations, one skilled in the art will understand based on the disclosure and the drawings that the description of a feature should be applicable to another embodiment to describe the like feature.

The present invention provides a siphonic flush toilet assembly that can function to maintain a primed closed jet fluid path including a jet channel by isolating fluid flow introduced into the bowl assembly to deliver different flow rates from a jet flush valve and a rim valve (e.g., a rim flush valve), preferably through separate closed jet fluid paths. This provides greater performance compared to standard gravity flush siphon toilets which work with air-filled jet channels and must expel air to minimize turbulence and flow restriction.

The toilet bowl assembly of the present invention has a closed jet fluid pathway that includes a jet channel (or channels) within the toilet assembly outside the bowl. The jet channel can have different configurations and extensions, additional ports or side channels, etc., depending on the urinal mold geometry, including an optional jet manifold, so long as the closed jet fluid path receives fluid from the jet valve outlet into the jet inlet port, into and through the jet channel to the jet outlet port. The closed spray fluid path maintains the spray channel in a primed state at all times and substantially isolates it, thereby helping to prevent air from entering the spray channel. This is achieved by: (1) isolating the jet channel from the peripheral flow path or other path to atmosphere, (2) closing the jet channel flush valve before the water level in the tank drops to the level of the flush valve's opening, (3) preventing air flow into the jet channel and any other jet path, area or optional jet manifold (if used), which in one embodiment may include establishing a water seal depth in the jet trap (jet trap) in the sump area to help prevent air from entering the jet channel outlet, and/or (4) configuring and operating the assembly to ensure that the water level in the jet trap does not drop to a level that enables air to return back up and into the jet channel.

In general, the ratio of the volume of fluid to the rim to the volume of fluid to the nozzle also affects the performance of the toilet. In a typical prior art siphon jet toilet, about 70% of the flush water is required as motive force for the jet and to initiate the siphon, leaving only about 30% of the flush water for flushing the bowl through the rim. In the filled toilets herein, less water is required to initiate a siphon, which allows more water to be used to clean the bowl. Applicants have determined that more than about 50% or more of the flush water can be fed directly to the rim for significant improvement in bowl cleaning. In preferred embodiments, more than about 60%, and even up to more than about 70%, of the water may be directed to the outer rim.

In addition to the above-mentioned factors, another way to maintain a sufficient water seal depth in the sump area and/or prevent backflow of air from the sump to the spray channels is to keep the flow rate of water through and from the spray channels slower after the siphon break. For example, for a bowl filled to a weir (i.e., there is excess water for siphoning), a volumetric flow rate from the jet nozzle in excess of about 950ml/s is required to initiate and maintain siphoning in a trapway roughly about 54mm in diameter. This corresponds to a through-area of about 7.47cm²The linear flow rate of the nozzle outlet port of (1) was 127 cm/s. The larger the trapway size, the higher flow rate will be required to initiate and maintain siphoning, and the smaller trapway will require a smaller flow rate. When the flow rate from the nozzle is below about 950ml/s, the siphon will break. The volumetric flow rate from the nozzle was kept below about 950ml/s but above about 175ml/s (i.e., a through area of 7.47 cm)²A linear flow rate of 23.4cm/s) will prevent air from entering the closed jet channel. When the urinal is completeFilling to the level of the weir of the trapway, flow from the jet nozzle can be prevented without losing priming as long as the top end of the jet channel is below the trapway weir.

Actuation of such flush valves for jet flush valves and rim flush valves can be controlled in a variety of ways. One method is through the use of solenoid valves, as disclosed in U.S. patent application publication No.2009/0313750 and U.S. patent No.6,823,535, the relevant portions of which are incorporated herein by reference. This valve control can also be accomplished purely mechanically, such as by modifying a dual inlet flush valve similar to those disclosed in U.S. patent No.6,704,945 (the relevant portions of which are also incorporated herein by reference). Alternatively, flush actuation levers as shown herein may be used in order to achieve the best balance of performance for two flush valves in series.

The flush activate lever may be connected to a pivot lever and handle or other flush activator using an adjustable flush connector. The adjustable flush connector provides an adjustable connection to compensate for differences in the position of the pivot rod relative to the valve assembly within the toilet. This compensation allows most of the valve assembly, flush actuation lever and/or pivot lever to be compatible with each other. The adjustment provided by the adjustable flush connector may include longitudinal movement along its length, rotation about its longitudinal axis, and/or rotation about its transverse axis.

Furthermore, as discussed in more detail below, the performance of the system may be enhanced by providing a "peel back" valve cover to facilitate self-priming of the nozzle. The cap serves to reduce the driving force required to open the injection shutter. In the present invention, when the injection channel is filled, more than twice the force is required due to the gravity of the water above and below the baffle, compared to conventional plate valves. By peeling the lid, the seal is broken and some water enters as the air returns making the lid easier to open. In addition to this, during initial filling, when the valve is closed, the nozzle is filled with air and if the flap is immediately fully open, depending on the geometry of the toilet and its jet channel, the flush water can flush too quickly and the air in the jet channel can be trapped and not sufficiently expelled. Furthermore, since the embodiments herein provide a primed and closed flow path, when the toilet requires a dip, the jet flush valve may be provided with an optional backflow prevention device as described further below.

The preferred valve cover configuration for use with a "peel back" valve cover optimizes valve performance. In particular, a locking element may be provided on the seal to prevent dislocation of the seal from the valve cap. Furthermore, in order to maintain the flushing performance constant, valve assemblies may be provided which are associated with each other by means of a linkage. These valve assemblies can be used to ensure proper and constant alignment between valve bodies over time.

Sufficient post-flush depth in the sump area and/or prevention of water entering the closed jet fluid path through the nozzle outlet port can also be achieved by keeping water flowing to the rim shelf in frameless toilets or through the rim channel of more traditional toilet designs when siphoning is interrupted. The toilet systems described herein include separate channels and valve mechanisms for controlling flow to the rim and nozzle, which may be designed to maintain flow through the rim inlet port when siphoning is interrupted. The flow of water to the rim inlet port is preferably sufficient to maintain the water level in the sump area above the level of the nozzle outlet port, but not sufficient to maintain a siphon in the trapway. In this way, additional security may be provided to keep the jet channel free of air, which reduces the dependence on the water seal depth in the region of the sump. It will be appreciated that the flow through the nozzle and the outer rim may also be used together to maintain a sufficient post-flush depth in the sump area.

The present invention provides an improvement over the prior art in the field of high efficiency siphonic toilets with flush volumes below 6.0 liters, and preferably below 4.8 liters. The embodiments of the toilet bowl assembly of the present invention described herein are capable of maintaining resistance to clogging, which is consistent with present day toilets that do not exceed about 6.0 liters per flush (preferably no more than about 4.8 liters per flush in single flush toilet and/or dual flush toilet assemblies), yet the present invention is also capable of providing superior bowl cleaning with reduced water usage. Because the amount of water required to pass through the jet channel to initiate a siphon is greatly reduced, the flush toilet assembly embodiments herein enable extremely high production efficiency toilets that can operate with no more than about 4.8 liters per flush volume, and preferably with about 3 or less than about 3 liters per flush volume, and as low as about 2.0 liters per flush volume.

In addition, the present invention improves upon the prior art in the area of siphonic toilets having larger sized trapways. By varying the size of the trapway, water consumption and toilet performance are significantly affected. In the present invention, the toilet bowl assembly is capable of maintaining priming in siphonic toilets of different trapway sizes and volumes because the closed jet fluid pathway, which in the preferred embodiment includes a primed jet manifold and a primed jet channel, reduces turbulence and flow restrictions, which enables the toilet bowl assembly to maintain excellent flushing and cleaning performance.

To achieve the maximum potential performance of the toilet system valve of the present invention, the closed fluid spray path must be primed, that is, it should be filled with water and contain little or no air. When the closed fluid jet path and jet channel contain a significant amount of air, which may be the case after initial installation of the toilet or after major repair or maintenance, the closed jet channel must be primed before full potential performance of the system is achieved. To produce perfusion, two basic requirements need to be met: (1) water must be allowed to flow into the enclosed fluid spray channel faster than it leaves the enclosed spray channel, and (2) the spray channel and the air contained in the enclosed spray fluid path must be provided a path to escape (passing through the water stream entering the enclosed spray channel in the same direction or in the opposite direction as the water stream).

The simplest method of priming a closed jet channel (which may be referred to as "manual priming") is to open the jet flush valve assembly described herein, while the peripheral valve remains closed and flow from the nozzle outlet port is prevented or partially prevented. The jet flush valve should remain open until no more air bubbles are visible escaping from the channel into the tank, at which point the jet flush valve can be closed and the nozzle outlet port not blocked. When the tank is refilled, the system should then be completely primed and ready for use at full performance potential. In a preferred embodiment, the system is designed to "self-prime" after the first few flushes after installation (or loss of prime for other unforeseen reasons, such as maintenance repairs, etc.). Self-priming needs to meet the same two requirements but is set as an inherent property of the system. Ensuring a self-priming system relies primarily on the geometry and design of the jet flush valve, the closed fluid jet path including the jet channel and the nozzle outlet port. As described in more detail below, the jet flush valve is preferably capable of achieving high flow rates into the enclosed jet passage, and rounded flush valves may be used to increase the flow rate (such as described in U.S. patent 8,266,723, which is incorporated herein by reference). In most closed jet channel designs, the last portion of the air remaining in the jet channel may rise to the space immediately below the flapper (or other opening mechanism) of the jet flush valve. Therefore, the valve design must also facilitate the escape of this residual air. As will be discussed below, the valve progressively opens, for example a rearwardly peelable flap, which restricts the flow of water to one side of the valve and promotes the escape of air around the flow. Certain patterns or ribs at the throat of the flush valve may also promote the escape of air.

1-15, 17-19, and 29-34 illustrate a first embodiment of a toilet bowl assembly, generally referred to herein as assembly 10. The assembly 10 includes at least one jet flush valve assembly 70, the jet flush valve assembly 70 having a jet flush valve inlet 71 and a jet flush valve outlet 13. Jet flush valve body 21 extends between inlet 71 and outlet 13 and defines an internal flow path. The jet flush valve assembly can have a variety of configurations and can be any suitable flush valve assembly known or to be developed in the art. Preferably, it is configured similarly to that described in co-pending U.S. patent application publication No.2014/0090158, the relevant portions of co-pending U.S. patent application publication No.2014/0090158 being incorporated herein by reference, described below and shown in fig. 35-68, a cover having a float, and various embodiments relating to a jet flush valve. As shown in fig. 1-2 and 7-11, the jet flush valve assembly 70 has a lower valve height profile than the peripheral flush valve assembly 80 (where the peripheral valve is described herein about assembly 80) to control flow through the jet flush valve assembly. Each of the peripheral flush valve assembly 80 and the jet flush valve assembly 70 preferably has a cap 115, the cap 115 preferably having a float 117 connected thereto by a chain 119 or other connection. These features help provide advanced performance and buoyancy control, particularly in certain flush valve designs, as described in co-pending U.S. patent application publication No. 2014/0090158. However, it should be understood that other flush valve assemblies may be used to provide improved flushing performance based on the principles of the present invention.

The jet flush valve assembly 70 delivers fluid from the jet valve assembly outlet 13 to the closed jet fluid path 1. The closed ejection fluid path 1 comprises at least one ejection channel. As shown herein, a single spray path (see, for example, the arrows shown in FIG. 3, highlighting only one leg of the dual spray path of the assembly 10) or multiple channels may be used. As shown in this embodiment, two such passages 38 are provided, beginning at one inlet and meeting at one outlet, each of which flows around the bowl on its underside, as shown by the flow paths in fig. 3A. An injection manifold may optionally be provided.

At least one peripheral valve is used. The peripheral valve may be a variety of valves including solenoid valves, straight through valves, electronic valves, or may be provided with water through the inlet tube only by an electronically controlled valve. As shown herein, a peripheral flush valve assembly 80 is provided as shown in fig. 1-2, 7-8 and 12-14. Each rim valve assembly has a rim flush valve inlet 83, a rim flush valve outlet 81, and a rim flush valve body 31 extending from the inlet 83 to the outlet 81. The rim flush valve 80 or any other suitable rim valve may be any suitable flush valve assembly or rim valve as described above, so long as it is configured for fluid delivery from the rim valve outlet to the rim inlet (also referred to herein as the rim inlet port 28).

In the illustrated embodiment, the rim 32 is a "frameless" design, wherein fluid is introduced into the bowl 30 through the rim inlet port 28, following the contour or geometric feature(s) formed into the interior surface 36 of the bowl 30. That is, the contour may be one or more shelves 27 or similar features formed along the upper perimeter portion 33 of the bowl 30. As best shown in fig. 29-34, the shelf is embedded in the porcelain structure of the urinal. The shelf is also referred to herein as a rim shelf 27, and as best shown in fig. 30-34, the rim shelf 27 extends generally laterally in the inset contour of the inner surface 36 of the bowl 30 along an inner surface 39 of the bowl 30 at its upper peripheral portion 33, at least partially around the bowl from the rim inlet port 28. The toilet bowl 30 may have various shapes and configurations, and may have various toilet seat covers and/or cover hinge assemblies. Since these covers are optional, they are not shown in the drawings, and many such covers and assemblies are known in the art, any suitable cover known or to be developed may also be used in the present invention.

In the embodiment shown in fig. 3, the shelf 27 may extend around almost the entire inner surface until terminating to create a vortex effect for cleaning. The peripheral shelf design may also include a plurality of peripheral shelves and a plurality of peripheral entrances, as described in co-pending U.S. publication No.2013/0219605a1 and as shown in the alternative "frameless" embodiment 410 of fig. 28. U.S. publication No.2013/0219605a1, which describes relevant portions of the frameless feature, is incorporated herein by reference. A similar design to that shown in uk patent application GB2431937A or any future variation of these designs may also be used in which the bowl is formed without a conventional hollow rim, the water being directed directly around a shaped inner surface of the bowl in an upper peripheral portion thereof which, as shown, forms a shelf or similar geometric feature in the contour of the bowl surface, thereby allowing fluid to flow at least part way around the bowl, entering the interior of the bowl at a location (or locations) laterally offset from the rim inlet. It should also be understood that (see fig. 16 and embodiment 110) that a standard rim channel having a rim inlet port feeding a rim channel defined by a conventional upper rim and having one or more rim outlet ports for introducing wash water into the interior area of the bowl may also be used in the embodiments described herein. Such a rim may or may not be pressurized and have various features as further described below with respect to embodiment 110. The outer edge features of embodiment 110 may be incorporated into a frameless version as shown in fig. 1-13 or fig. 28 without departing from the scope of the invention.

As described above, in assembly 10, shelf 17 may be inset. As shown in fig. 30-34, the contour of shelf 27 has a relatively uniform (and preferably uniform) depth d, measured transversely from the interior surface of the toilet bowl to the contour, and a height h, measured longitudinally from shelf 27 to the upper surface 47 above the shelf. The shelf width s varies along the peripheral flow path from the peripheral outlet port. The profile has an inwardly extending portion 43 and an upper surface 47 extending along the shelf above shelf 27, but the shelf varies in size to provide a steeper shelf in the region of the profile having a width s1 and a height h1, the height h1 being slightly greater than the depth to accommodate the intense flow of fluid from the peripheral inlet port as shown in fig. 30. As the rim flow progresses along the shelf toward the front of the bowl as shown in fig. 32 (see s2 and s3), the size of the shelf remains relatively large near about midway between the rear and front of the bowl, as shown in fig. 31. Although the depth d is relatively uniform, the height h begins to become higher toward the front of the bowl (see h2 and h3), while the shelf width decreases (see s2 and s 3). In one embodiment herein, the depth is preferably maintained between about 10mm to about 30 mm. The height varies from about 35mm to about 50mm at the beginning of flow, about 35mm to about 50mm at a midpoint location between the rear and front of the bowl, to about 40mm to about 55mm at the front of the bowl. The shelf width is represented by s, where s is a transverse measurement taken tangentially from a first radius of curvature R at the inset edge of the shelf to a second radius of curvature R with the shelf tip facing downward. The shelf is at an angle alpha to a tangent from the first radius. In the present embodiment, the angle α changes as one proceeds along the path in FIGS. 30-34 and is shown at 7, 5, 7, 22, and 31, respectively. As the angle increases, the radius increases and the shelf width s disappears at the end of the shelf, facilitating the formation of a downward slope.

As shown in fig. 33, as fluid continues to flow toward the opposite side of the bowl at the midpoint of travel from the front of the bowl toward the rear of the bowl in fig. 34, the depth d remains fixed, but the height becomes further higher, varying from about 45mm to about 60mm at the midpoint location of fig. 33 to about 50mm to about 65mm at the rear of the bowl. As the height becomes higher (h4 and h5), shelf 27 weakens into a curve and eventually ends.

The urinal assembly also includes a jet 20 defining at least one jet channel, such as jet channel 38. The jet 20 has an inlet port 18 in fluid communication with the outlet 13 of the jet flush valve 70 and a jet outlet port 42, the jet outlet port 42 being located in the lower portion or bottom 39 of the bowl 30. The jet outlet port may be configured with varying cross-sectional shapes and sizes to discharge fluid to the sump area 40 of the bowl 30. Other alternative areas or paths may be provided as long as the jet fluid path remains closed, including multiple jet outlets or multiple other flow paths or openings to the interior volume of the bowl if desired, as long as the volume is filled and all of the orifices or outlets are below the waterline of the sump to avoid effects on jet seal depth. Preferably, the other of the spray outlets is below the main outlet. As best shown in fig. 3C-3G, the shape of the internal nozzle (including the space created by the bowl geometry surrounding the channel 38) is larger than the channel itself and extends between the inlet 18 and the outlet 13. The nozzle shapes are shown in top, bottom, right, rear, and left views (fig. 3C-3G), respectively. The shape or common area may vary as long as the inner space of the nozzle 20 remains primed in use.

The sump area 40 is in fluid communication with an inlet 49 to the trapway 44, and the trapway 44 has a weir 45. The closed ejection fluid path 1 comprises an ejection channel (or a plurality of ejection channels) 38. The jet flush valve 70 is preferably located at a height L above the trapway weir 45. The closed jetting fluid path 1 preferably extends from the outlet 13 of the jetting valve assembly 70 to the outlet port 42 of the nozzle 20. Once the assembly is primed, the closed jetting fluid path 1 can be kept primed by water to prevent air from entering the closed jetting fluid path before the flush cycle is initiated and after completion.

The closed jetting fluid pathway can include a jetting manifold (not shown) by interposing a space or region between the inlet and the jetting pathway and providing fluid communication through a jetting manifold inlet opening and outlet (not shown). The toilet bowl assembly may have a rim manifold (not shown). Any such rim manifold will also have to have a rim manifold inlet opening that is in fluid communication with the outlet 81 end of the rim flush valve assembly 80 and for receiving fluid from the outlet 81 of the rim flush valve assembly 80. Such a rim and injection manifold is depicted in the embodiment of fig. 16. In the embodiment 10 herein, the rim 32 is a frameless shelf (although conventional rims with rim channels may also be used). The shelf extends at least partially around the bowl.

The assembly preferably includes a water tank 60 in fluid communication with a water Source (SF), which may be municipal water, tank water, well water, or the like, such that when the assembly is installed, the water tank 60 may receive a flow of fluid through the water tank into the intake valves. The water tank preferably has at least one inlet valve 66. The inlet valve may be any suitable inlet valve commercially available or to be developed so long as it provides sufficient water supply to maintain the amount of water in the tank to enable the functions described in this disclosure. The water tank 60 may be a large open container having both a peripheral valve assembly and a jet flush valve assembly as shown in fig. 1-13. The water tank may also be modified to have at least one jet reservoir and at least one rim reservoir as described below (embodiment 1010). If a separate reservoir is provided, the jet reservoir may include a fill valve or a jet fill valve and the at least one jet flush valve assembly 70, and the rim reservoir may include the at least one rim flush valve assembly and a tank or a rim fill valve. Such a rim reservoir may further accommodate an overflow tube 91 on the rim flush valve assembly 80, if desired.

The toilet bowl assembly of fig. 1-13, like the other embodiments herein, is capable of operating with a flush volume of no more than about 6.0 liters, and preferably no more than about 4.8 liters, and even more preferably no more than about 2.0 liters.

The sump area 40 of the bowl preferably has a jet trap 41 bounded by the interior surface 36 of the bowl 30 at the lower bowl portion 39. The jet trap 41 has an inlet end 46 and an outlet end 50. The inlet end 46 of the jet trap receives fluid from the jet outlet port 42 and the interior region 37 of the lower portion 39 of the bowl 30, and the outlet end 50 of the jet trap 41 includes and flows into the inlet 49 of the trapway 44. The jet trap has a water seal depth as described further below. The various modified descriptions regarding the measurements of the water seal depth, the jet path, and the depth x as shown in example 10, fig. 1-13, and 29-34 below are also readily incorporated into example 110 of fig. 16 and are readily operable in example 110.

To maintain a siphonic flush toilet assembly, such as assembly 10, in a primed state, the initial step is to provide a toilet bowl assembly having the features described above and with respect to various other embodiments herein (including 110, 1010, 210, 310, and 410, etc.), particularly where the closed jet fluid pathway 1 having the jet channel 38 extends from the outlet 13 of the jet flush valve 70 to the outlet 42 of the jet 20, such that once primed, the closed jet fluid pathway can remain primed with fluid to avoid air from entering the closed jet fluid pathway after a flush cycle is initiated or completed. The flush cycle is initiated by any suitable actuator, such as a flush handle H. In a preferred embodiment, the ceramic outer portion and handle H are formed from or incorporate a material that provides an antimicrobial surface. After the flush cycle is initiated by a flush actuator, such as a handle, the handle has a portion that is operably connected (whether removable or non-removable) to the flush actuator rod 75.

Both valves may have actuators that cause both to open simultaneously (which may be accomplished by a standard actuation lever of the flush handle), or may have lift timing changes and/or adjustments based on the weight of the respective flush valve cap by using a flush actuation handle that provides a balancing mechanism, such as in fig. 15. As best shown in fig. 15, the handle H is operatively connected to a pivot lever P having a pivotally movable link RL. Any hinge, pin connection, washer or other rotational connector may be used. The flush actuation lever 75 has a balance point BP for movable connection to the pivot lever P by a link RL. A similar movable and rotatable link RL' (which may be the same as the rotatable link RL) connects the pivot lever and its link RL to the flush actuation lever 75 at the balance point BP. The balance point is selected by design to operate with the flush valves, thereby specifically and mechanically controlling the timing of the opening of each valve when the handle H is depressed to initiate a flush cycle. When the handle H is depressed, the pivot lever P and the link RL are pushed upward at the end having the link RL. This in turn pulls the actuating lever 75 upward. A rod 75 with multiple holes may be provided to provide a linkage for changing the balance point so that only one rod needs to be made but can be used for different valve caps and different flush timing patterns. Although the flush actuation assembly is described with respect to a siphonic toilet, it should be understood that the flush actuation assembly may be used with any style of toilet, including a direct flush toilet.

An assembly kit 1100 as shown in fig. 69-70 and 85 can be provided to improve actuation and communication between the handle H and one or more valves. The assembly kit 1100 may have a flush actuation assembly 11144 that includes a pivot rod P, a flush actuation rod 1175, and a connector 11260. One end 11142 of the pivot rod P may be connected to a handle H or any other flush activation mechanism located on the exterior of the tank, while the opposite end 11143 of the pivot rod P may be connected to a connector 11260 using a rotatable connection. The pivot lever P can be any standard or conventional pivot lever or adjusted for the size and configuration of the water tank. As shown in fig. 85, the location of the connecting element 11145 on the pivot rod P, which may be one or more openings, may be positioned at different locations along the pivot rod relative to the valve opening, depending on the manufacturer of the pivot rod and toilet tank. Each manufacturer may have a slightly different location for the connecting element 11145 along the length of the pivot rod P or the pivot rod P itself may vary in shape. Variations of the embodiments described herein of the connector 11260 can be used to compensate for the different positions of the connecting elements, and therefore, it is contemplated that substantially any pivoting lever P, as well as other non-conventional flush actuators, are compatible with the present embodiments. Variations of the embodiments of the connectors described herein can also be used to offset variations in the exact positioning of the handle H and pivot rod P relative to the

valve bodies

1131 and 1121 due to variations in handle and pivot rod configurations and/or tank dimensions. Thus, the connector may ensure that the proper amount of lift is provided to the valve to trigger the desired actuation.

As shown in FIG. 85, the connector 11260A is shown as a chain C3 that hooks onto the connecting element 11145 in the pivot rod P at the first chain end 11264 to form a first rotatable connector 11153 and hooks onto the connecting element 11261 on the flush actuation rod 1175 at the second chain end 11266 to form a second rotatable connector 11157. The flush actuation rod 1175 and the pivot rod P in variations of this embodiment may be the same as those described in more detail below with respect to the use of the adjustable flush connector 11150 as shown in fig. 69-72. Depending on the type of connector 11260 used, the connection elements on the pivot rod and connector may be varied to form a rotatable connection between these elements. The connector 11260 should be provided about its longitudinal axis LA_CSuch that the flush actuation rod 1175 is movable relative to the pivot rod P about the axis LA (fig. 85)_CPivoting, but without the pivoting lever P enclosing the axis LA_CAnd (4) rotating. Additionally, the first rotatable connector 11153 between the pivot rod P and the connector 11260 should be rotatable about the transverse axis TA of the pivot rod P_pIs rotationally positioned. The second rotatable connector 11157 between the flush actuation rod 1175 and the connector 11260 should be movable about the transverse axis TA of the flush actuation rod 1175_bIs rotationally positioned. Preferably, the connector 11260 is an adjustable irrigation connector 11150 as shown in figures 69 and 70 and described in more detail below. Additional variations of this embodiment of the connector sufficient to provide rotational movement of the flush actuation rod 1175 relative to the pivot rod P are also acceptable connectors and are shown in fig. 86 and 87.

Fig. 86 and 87 illustrate providing longitudinal axes LA about them_CAnd rotationally

movable connectors

11260B and 11260C. About the longitudinal axis LA of these variants of the connector_CIs preferably made from a longitudinal centre point LC along the length l of the connector_cA locating ball and socket connector 11154. A variation on the embodiment 1100 using the adjustable flush connector 11150 shown in FIG. 69 as an alternative embodiment to the connector 11260 will now be describedA similar ball and socket connector 11154 is discussed in more detail. Referring to fig. 87, a spacer 11262 may be positioned between the ball and socket connector 11154 and the irrigation actuation rod 1175. A spacer 11262 can be included to provide easier rotation of the irrigation actuation rod 1175 about the longitudinal axis, but is not necessary for the connector to function properly.

In fig. 85, the first rotatable connector 11153 between the connector shown as chain 11260A and pivot rod P may be a hinge-type connection, where pin 11146 is inserted through an opening 11158 located on connector 11260A. It should be understood that a transverse axis TA may be used that allows for pivoting about a pivot rod_PIncluding hooks inserted into holes, the use of protrusions on one component inserted into openings or recesses on the other component, ball and socket joints, and any other known connection. A similar connection between the pivoting lever P and the connector 11260 will be discussed in more detail below with respect to the adjustable flush connector 11150 in fig. 69-72.

Likewise, the second rotatable connector 11157 between the flush actuation rod 1175 and the connector 11260 may be the same or different from the connection used for the first rotatable connector 11153 between the connector and the pivot rod. As shown in fig. 86 and 87, a hinge type connection 11268 may be used in which a convex portion 11263 is integrally formed on the

connectors

11260B and 11260C. These tabs 11263 may be inserted into the opening 11165 in the flush actuation rod 1175 by resilient and/or torsional compression of the tabs and/or sides of the flush actuation rod. The flush actuation rod 1175 may surround the flush actuation rod TA_bIs free to rotate. Other types of connection means suitable for use with the second rotatable connector 11157 are also contemplated, including the use of pins passing through openings in both members, hooks inserted into the openings, ball and socket joints, and any other rotatable connection known or to be developed. Similar connections between the connector 11260 and the flush actuation rod 1175 will be discussed in more detail below with respect to the adjustable flush connector 11150 in FIGS. 69-72.

Although several exemplary variations of connectors 11260A-C have been described herein, it should be understood that a cable is provided about longitudinal axis LA_CIs rotated and movedAny connector 11260 that is movable may be used in the flush activation assembly. This rotational movement may allow the flush actuation lever to be in the correct position to actuate the valve assembly. Preferably, the connector 11260 can be an adjustable flush connector 11150 and the flush actuation assembly can be constructed as described below.

Fig. 71 illustrates a front perspective view and fig. 72 illustrates a top perspective view of the adjustable flush connector 11150 illustrated in fig. 69 and 70. The preferred adjustable flush connector 11150 is configured such that it is suitable for operation with a variety of different pivoting levers P and/or a variety of different valve configurations. The configuration of the adjustable flush connector 11150 may have connecting elements that are adjustable in at least one direction relative to one another. The adjustability of the configuration may include rotation about its longitudinal axis, rotation about a transverse axis, and/or movement along its longitudinal axis. Certain preferred structures for this purpose are discussed in more detail below. The adjustable flush connector 11150 preferably has a first section 11151, a second section 11152, and an adjustable connector 11156.

The first segment 11151 preferably has a first rotatable connector 11153 configured to connect with the pivot rod P. The configuration of the connection to the pivot rod P is such that when the end 11143 of the pivot rod P to which the adjustable flush connector 11150 is connected moves upward, the adjustable flush connector 11150 also moves upward. When the handle H is depressed, the end 11143 of the pivot rod P that is connected to the adjustable flush connector 11150 can move upward. The first rotatable connector 11153 may include structure that allows the first rotatable connector to rotate at least about an axis transverse to the longitudinal centerline CL of the adjustable irrigation connector 11150, such configurations may include one or more openings into which pins or hooks may be inserted, hooks to be inserted into holes, ball and socket joints, snaps, other hinged structures, or any other known connection.

The adjustable flush connector 11150 is preferably connected to the pivot rod P through the use of a first rotatable connector 11153. The opening 11158 in the first rotatable connector 11153 is preferably aligned with the opening in the end of the pivot rod 11143. Once the openings are aligned, a pin 11146 may be inserted through each opening and secured on the opposite side of the side into which the pin was initially inserted. The pin is preferably secured by inserting crank pin 11139 through an opening in the end of the pin inserted through the opening. Other ways of securing the pins are possible, including using spring-loaded pins, cotter pins, or other small pins that preferably do not allow removal of the pin 11146 from the opening. While the method of inserting the pin 11146 through the opening for connecting the adjustable flush connector 11150 with the pivot rod P is preferred, it should be understood that any method for connecting two elements that allows rotation of the adjustable flush connector 11150 about the pivot rod P may be used. The rotational aspect of the first rotatable connector 11153 allows the longitudinal centerline CL of the adjustable flush connector 11150 to remain perpendicular to the tank bottom while moving upward through the pivot rod P.

The second section 11152 of the adjustable irrigation connector 11150 may be connected with the first section 11151 of the adjustable irrigation connector 11150 through the use of a ball-and-socket connector 11154. The ball and socket connector 11154 allows the second section 11152 to rotate relative to the first section 11151 about the longitudinal centerline CL of the adjustable flush connector 11150. The ball and socket connector 11154 also allows the second section 11152 to swing back and forth like a pendulum along any plane that intersects the longitudinal axis, which movement allows the longitudinal axis of the second section 11152 to be free at all times to be non-perpendicular to the bottom of the tank. Ball and socket connector 11154 is one possible type of connector that may be used between

sections

11151, 11152 that allows second section 11152 to both rotate about a longitudinal axis and oscillate back and forth along a plane that intersects the longitudinal axis of the second section with respect to first section 11151. However, it should be understood that any type of connector that allows rotation of each of

segments

11151 and 11152 in only one of these ways may be used, including a shackle or hinged connection using a pin in conjunction with an opening in one or both

segments

11151 and 11152. It should also be understood that the adjustable flush connector 11150 may be a single unit that is not movable or rotatable between the first segment 11151 and the second segment 11152.

Each of the first and second sections may be independently made of a polymeric material or a metal, preferably they are of dissimilar materials to prevent sticking of mating parts. Preferably comprising ball and socket connectors 11154First segment 11151 is integrally molded from a polyester material. The second section 11152 is preferably formed from an acetal material. Other materials, including other polymers and various metals or alloys, are also contemplated for forming the first section and/or the second section. Both the first section and the second section are preferably formed by hot embossing, such as an injection molding process. It should be understood that other methods may be used to form the first and second sections of the regulator irrigation connector 11150, including resin casting, compression molding, or three-dimensional printing. It should also be understood that each section may be formed using a different process. The length l of the entire adjustable flush connector 11150 along its longitudinal centerline CL_FCPreferably between about 60mm and about 130 mm. Length l of first segment 11151_1FCPreferably between about 10mm and about 50mm and the length l of the second section 11152_2FCPreferably between about 50mm and about 100 mm.

The first section 11151 preferably includes the socket element 11166 of the ball-and-socket connector 11154 and the second section 11152 preferably includes the ball element 11167 of the ball-and-socket connector 11154. Both recess 11166 and ball 11167 may have a generally spherical shape. The ball element 11167 of second segment 11152 is preferably sized such that it fits within socket element 11166 of first segment 11151 and is retained such that movement in the longitudinal axial direction relative to first segment 11151 is minimized. Ball 11167 should be sized so that it is free to move within pocket 11166. The outer surface of the ball may be in contact with the inner surface of the socket, but if no contact occurs, it should be such that the friction formed between the elements does not interfere with the freedom of rotation of the ball 11167 within the socket 11166. However, it is also acceptable to use additional force to rotate the elements relative to each other due to friction.

The second section 11152 of the adjustable flush connector 11150 has an outer surface 11155, which may have optional threads 11159 to be configured to threadably connect with the adjustable connector 11156. Preferred diameter D of outer surface 11155 excluding the threads of second segment 11152_2ACBetween about 3mm and about 12 mm. The threads 11159 on the surface 11155 of the adjustable flush connector 11150 may extend along the entire length of the second segment 11152 or other connector element that does not include the ball 11167. However, the device is not suitable for use in a kitchenRather, it should be understood that only a portion of the surface 11155 may be threaded. If only a portion of the surface 11155 has threads 11159, at least about 20mm should have threads sufficient for the adjustable connector 11156 to engage the surface 11155. Additionally, it should be understood that surface 11155 need not necessarily include any threads.

The adjustable connector 11156 may have a longitudinal length l between about 10mm and about 30mm_AC. The diameter D of the inner surface of the adjustable connector 11156, as measured along a transverse centerline through the adjustable connector 11156_lACBetween about 4mm and about 15 mm. Diameter D of the inner surface_lACShould be in contact with the outer surface D of the second segment 11152_2ACAre compatible such that the second segment 11152 can be inserted into the adjustable connector 11156. The adjustable connector is preferably injection molded from polyester resin or other polymeric material. However, any method of manufacturing the adjustable connector may be used, including resin casting, compression molding, or three-dimensional printing. To avoid sticking of the components, the adjustable connector 11156 that mates with the flush actuation rod 1175 and the adjustable flush connector 11150 should be of a different material than each of these components.

The adjustable connector 11156 may preferably have mating threads on an inner surface to define a passageway through the adjustable connector 11156 such that the adjustable connector 11156 may be threaded onto a surface 11155 of the second segment 11152 of the adjustable flush connector 11150 having threads 11159. The threaded connection allows the adjustable connector 11156 to be longitudinally adjustable along the length of the second section 11152 and rotatably positioned about the longitudinal axis of the second section 11152. The use of threads to connect the adjustable connector 11156 with the second section 11152 is one preferred embodiment, however, it should be understood that other methods of connecting the adjustable connector 11156 with the second section 11152 may be used. Such connections may include slidable connectors having clamping members, as well as any other connection that allows the adjustable connector 11156 to be longitudinally movable along the second section 11152 and rotationally positionable about the longitudinal axis of the second section 11152. Second section 1115 may also be configured such that a separate adjustable connector 11156 is not required. Such a second section 11152 may comprise one or more protrusions or one or more openings located along the length of the second section to directly connect with the flush activation rod. The position of the flush actuation rod 1175 will be adjustable along the length of the second section 11152 by selecting a position for directly connecting with an opening or protrusion on the second section 11152 using a protrusion or opening on the flush actuation rod 1175. Additionally, the angle of the opening and/or protrusion in the second section 11152 may vary about the longitudinal central axis such that the flush actuation rod may also be rotationally positioned about the longitudinal axis of the second section.

The adjustable connector 11156 preferably has a second rotatable connector 11157. The second rotatable connector 11157 is configured to connect the flush actuation rod 1175 with the adjustable connector 11156 at the equilibrium point BP on the flush actuation rod 1175. The configuration of the second rotatable connector 11157 is such that the flush actuation rod 1175 is rotatable about a transverse line extending across both sides of the adjustable connector 11156. Specific preferred configurations are as follows. The balance point BP is preferably located such that when the flush actuation rod 1175 is raised, which typically occurs in response to depression of the handle H or lifting of the end 11143 of the pivoting rod P connected to the adjustable flush connector 11150, the timing of the opening of each valve relative to the other is optimized. An embodiment related to the timing optimization between the opening of the valve cover has been described above and is shown in fig. 15.

The flush actuation lever 1175 preferably has a lever body 11169, wherein the preferred length l of the flush actuation lever 1175_FBBetween about 90mm and about 130 mm. Preferred width w of flush actuation rod 1175_FBBetween about 2mm and about 5mm, and flush the preferred height h of the actuation rod 1175_FBBetween about 5mm and about 15 mm. The flush actuation rod 1175 may be generally rectangular in cross-section. However, any shape of cross-section may be used, including circular, elliptical, hexagonal, triangular, etc., as will be appreciated by those skilled in the art based on the present disclosure. The flush actuation rod 1175 may be made of a polymeric material, a metal or a metal alloy and is preferably injection molded using acetal. However, the flush actuation rod may be manufactured using any manufacturing method, including resin casting, compression molding, or three-dimensional printing.

The flush actuation lever 1175 preferably has two side arms 11177. The side arms 11177 form and define a large opening 11164 in the stem 11169 that is preferably located around the equilibrium point BP of the flush actuation lever 1175. The large opening 11164 defined by the side arm 11177 may extend along the longitudinal axis of the flush actuation lever 1175. The large opening 11164 preferably has an oval cross-section. However, any shape for large opening 11164 is contemplated, including circular or rectangular. The side arm 11177 is preferably symmetrical about the longitudinal axis of the flush actuation rod 1175, but symmetry of these elements is not necessary. For the preferred shape of the flush actuation rod 1175, the side arms 11177 should be parallel to each other at least at one location along their length. The size of the large opening 11164 is contemplated in such a way that a portion of the entire adjustable flush connector 11150, including the adjustable connector 11156, may be inserted therethrough.

At the location where the two side arms 11177 are parallel to each other, two small openings 11165 may extend laterally through the side arm 11177, with the side arm 11177 being formed as part of the flush actuation lever 1175 and defining a larger opening 11164. The small opening 11165 is preferably circular, but can have any shape that allows for rotation of the connecting element and at least the bottom of the small opening 11165 should be generally curved. The small opening 11165 preferably corresponds to or is configured to receive two tabs 11163 extending from either side of the adjustable connector 11156.

To attach the flush actuation rod 1175 to the adjustable connector 11156 and form the second rotatable connector 11157, the adjustable connector 11156 includes two bosses 11163 that each extend from one side of the adjustable connector 11156. The two protrusions 11163 are preferably positioned toward the top of the adjustable connector 11156 and are preferably located on the same line extending transverse to the adjustable connector 11156. The projection 11163 is preferably cylindrical. However, any cross-sectional shape is contemplated, such as elliptical. The cross-sectional shape is preferably rounded at least on the bottom edge so that the boss 11163 can rotate within a small opening 11165 in the flush actuation rod 1175.

As a method of forming the second rotatable connector 11157, the two bosses 11163 may be snapped into a small opening 11165 in the flush actuation lever 1175, thereby forming a connection that is rotatable about the bosses 11163, which is rotatable about a transverse axis of the flush actuation lever 1175. The tab 11163 is preferably snapped into place by resilient and/or torsional compression of the tab 11163 and/or the side arms 11177 such that the tab 11163 is locked in place within the small opening 11165. Protrusion 11163 may also be resiliently operable to extend into small opening 11165 and preferably end 11179 of protrusion 11163 may be beveled to facilitate insertion of protrusion 11163 into small opening 11165. The beveled end 11179 may also assist in removing the tab 11163 from the small opening 11165 if removal is desired. Although a removable connection is preferred, the protrusion 11163 may also have a shape and/or size that makes removal difficult or very impractical.

Any type of connection that is rotatable about the transverse axis of the flush actuation rod 1175 will be understood by those of skill in the art based on this disclosure as an acceptable alternative configuration for the second rotatable connector 11157. The use of an adjustable connector 11156 and an opening of the second section 11152 through the adjustable flush connector 11150 into which a pin may be inserted is also contemplated to form the second rotatable connector 11157 to connect the flush actuation rod 1175 with the adjustable flush connector 11150. In such an embodiment, more than two openings would be required on the second section 11152. Each opening extends laterally across the second section and will be positioned at various points along the length of the second section. More than two openings may extend across the second section at one or more different angles to each other. More than two openings will allow the adjustable connector 11156 to be longitudinally movable and rotatably positionable. A similar arrangement may also be used to directly connect the flush actuation rod 1175 with the second section 11152 of the adjustable flush connector 11150 without the use of the adjustable connector 11156 as described above. Other possible connections may include a threaded surface on the male portion 11163. A mating threaded female component having a smooth outer surface may be used to removably secure the flush activation rod on the adjustable connector to form the second rotatable connector. Riveted connections may also be used, which may form a removable or permanent connection.

In fig. 69, one embodiment of an assembly kit 1100 is shown having a first valve assembly, a second valve assembly, and a flush actuation assembly including a flush actuation lever and an adjustable flush connector without tools and shown connected with a pivot lever P and a handle H. Alternative kits may also include one or more of the following: such as the tank-to-bowl gasket means shown below in fig. 83 and 84, the float attachment shown in fig. 88-90, and the multi-flush valve assembly shown in fig. 80-81. Fig. 69 shows the connection linking the action on the handle H with the valve opening. When the handle H is depressed, the pivot rod P vertically raises the adjustable flush connector 11150, which in turn vertically moves the flush actuation rod 1175 at equilibrium point BP. Flush actuation rod 1175 is preferably connected to a first valve assembly 1180 at a first portion 11161 of rod 1175 and to a second valve assembly 1170 at a second portion 11162 of rod 1175. First valve assembly 1180 is preferably a peripheral valve assembly and second valve assembly 1170 is preferably a jet valve assembly. The rim valve assembly 1180 and the jet valve assembly 1170 have been described herein in various embodiments of a pour-on toilet and may be similar or identical to those described as

valves

80 and 70 in the previous embodiments. In order for the flush actuation rod 1175 to be usable with a variety of connector styles used on the chains C and C1 connecting the flush actuation rod 1175 with the

respective valve assemblies

1170 and 1180, one or more types of connectors may be located on the first portion 11161 and/or the second portion 11162 of the flush actuation rod 1175, including snaps, or other female connectors as shown in FIG. 69. Likewise, hooks or other male connectors may also be included on one or both of first portion 11161 and second portion 11162.

The location of the balance point BP between the adjustable connector 11156 and the flush actuation rod 1175 can affect the timing at which each

valve cap

1182 and 1173 opens. Valve caps 1182 and 1173 may be set to open simultaneously, or to optimize the performance of a pour-in siphonic toilet as described with respect to FIG. 15 by having peripheral valve cap 1182 fully open before jet valve cap 1173 begins to open.

When a flush cycle is initiated, fluid is provided through at least one rim valve, here rim flush valve assembly 1180, and through at least one jet flush valve, here shown as jet flush valve assembly 1170. The closed jet fluid path is configured such and the timing of the flush cycle is optimized to maintain the closed jet fluid path in a primed state after the flush cycle is completed. The flushing mechanism and timing may be the same as the optimized performance discussed in the

various embodiments

10, 110, 210, 310, 410, etc. and examples included herein.

In one embodiment of the method described herein, after the flush cycle is initiated, the flush actuating lever operates to provide fluid through the at least one jet flush valve assembly at a flow rate sufficient to prevent air from entering the nozzle outlet and sufficient to create a siphon in the trapway. The flow rate through the jet channel is then continuously reduced for about 1 second to about 5 seconds until the siphon breaks; and flow is maintained at least until the nozzle outlet port is covered.

Fluid is also preferably provided through the at least one peripheral flush valve assembly during a flush cycle. The toilet may require initial priming on first installation, providing a flow rate through the jet flush valve assembly outlet sufficient to prevent air from entering the nozzle outlet port before the sump is filled with water, as described above. The relevant flow rates for achieving these steps are described elsewhere herein. The toilet assembly is capable of self-priming as described above and preferably all or substantially all of the air is expelled from the jet channel when the toilet is in a condition that results in the jet channel having air. A small amount of air may enter the closed fluid ejection path while still providing good operation, which may be acceptable for overall performance. Preferably, only about 100 milliliters (air) is included at most in embodiments such as those shown herein (such as embodiment 10), but acceptable performance may include a larger amount of air, but preferably no more than about 500 milliliters to prevent performance degradation. The specific values may vary depending on the urinal geometry.

The toilet is normally in a primed state, for example, as described above, when the toilet is first installed, although other conditions, such as plumbing work or maintenance, may also cause such conditions. The user may of course intervene manually at installation to prime the toilet assembly, or at deployment, the toilet may self-prime in one or more of the first few flush cycles of the toilet without requiring manual intervention by the user.

As shown in fig. 1-13 and 29-34 herein, in practice as few as about three flush cycles (although more or less may be required depending on the geometry of the individual toilet), the toilet can exhaust all of the air. To accomplish self-perfusion, two conditions must be met: (1) the flow rate of fluid through the jet flush valve needs to be greater than the flow rate of fluid exiting the nozzle outlet port to provide sufficient energy to displace the air; (2) a route must be provided for air to escape from the outlet or upwardly through the jet flush valve assembly. This may be achieved by a change in the geometry and/or cross-sectional area of the spray channel and/or nozzle outlet port and/or by a change in the flush valve to enhance performance. Therefore, it is preferred to use a jet flush valve that can provide high energy and high flow rate flow through the jet channel into the closed jet fluid path. Suitable valves are described in U.S. patent No.8,266,733 and co-pending U.S. non-provisional patent application publication No.2014/0090158, the teachings of which are incorporated herein by reference with respect to valves having a streamlined body configuration and having a radiused inlet and/or a weighted cap. Other suitable flush valves are commercially available and may be described elsewhere herein with respect to other embodiments of the toilet assembly described below using the same flush valve (see fig. 35-68 herein, better air release provided by peel performance, described below). In addition to the gradually lifting cap, the star-shaped internal ribs also affect the rate of air discharge, as discussed further below.

Fig. 16, 20, 21, and 22 illustrate other embodiments of the toilet bowl assembly described herein. The toilet bowl assembly of fig. 16 (generally referred to herein as 110) has at least one jet flush valve assembly 170 configured to deliver fluid (e.g., flush water) to the jet 120 (e.g., a direct feed jet) and at least one rim flush valve assembly 180 configured to deliver fluid to the rim 132. Referring to fig. 21, the toilet bowl assembly 110 also has a jet manifold 112, the jet manifold 112 having a jet manifold inlet opening 114 and a jet manifold outlet opening 116, the jet manifold inlet opening 114 configured to receive fluid from the outlet 113 of the jet flush valve assembly 170, the jet manifold outlet opening 116 for delivering fluid to the jet inlet port 118. The toilet bowl assembly 110 further includes a rim manifold 122, the rim manifold 122 including a rim manifold inlet opening 124 and a rim manifold outlet opening 126, the rim manifold inlet opening 124 configured to receive fluid from the rim flush valve assembly 180, the rim manifold outlet opening 126 configured to deliver fluid to the rim inlet port 128.

The assembly 110 further includes a bowl 130 having a rim 132, the rim 132 being disposed about an upper peripheral portion 133 of the bowl 130. In one embodiment, the rim 132 may define a rim channel 134 as shown. The rim inlet port 128 is in fluid communication with the rim channel 134 such that the rim channel 134 is also in fluid communication with the rim manifold outlet opening 126 through the rim inlet port 128, and the rim channel is also in fluid communication with the at least one rim outlet port 129. As used herein, fluid communication means that one element in the assembly is structurally positioned to open to flow from another element. The rim outlet port (or ports) is in fluid communication with an interior area 137 of the bowl 130, wherein the interior area 137 is defined by an interior surface 136 of the bowl 130. The remaining components of the assembly are similar to those of example 10.

With respect to embodiment 10, the toilet assembly includes a direct-feed nozzle 20, the direct-feed nozzle 20 having at least one jet channel 38 (which can also be used in embodiment 110) as described above and defining its configuration. The channel (or channels) extend between the nozzle inlet port 18 and the nozzle outlet port 42. The at least one jet channel 38 has an inlet port 18 in fluid communication with the outlet opening 16 of the jet flush valve. The nozzle also has a nozzle outlet port 42, the nozzle outlet port 42 being configured for discharging fluid from the jet channel 38 to the sump region 40. The sump area is in fluid communication with a trapway 44 or other toilet drain for draining a toilet bowl 130.

When a urinal is installed, a source of fluid (such as flush water) from a straight-through flush female valve connected directly to a water pipe inlet in a wall may be used, as with many industrial and commercial toilets. The assembly may optionally include a water tank 60 as shown in fig. 19 and 21. Preferably, the water tank 60 is provided with at least one opening 62 for receiving the jet flush valve assembly 70 and allowing fluid from the outlet 13 of the at least one jet flush valve assembly 70 to enter the closed jet fluid pathway 1 and jet channel(s) 13 and at least one second opening 64 for receiving the rim flush valve assembly 80 and allowing fluid from the outlet 81 of the rim flush valve assembly 30 to enter the rim pathway leading to the outlet port 28 or to any optional rim manifold through the rim manifold inlet opening.

The cistern 60 should also include at least one inlet valve 66 and optionally an overflow pipe, such as the overflow pipe 91 shown in the embodiments described above. The tank 60 may be formed as a single, open reservoir with the jet flush valve and rim flush valve in one area as shown in fig. 19, or the tank may be configured as two separate reservoirs as shown in embodiment 1010 of fig. 20. The overflow pipe should operate under the flow of the rim flushing fluid RF (in any way connected to the valve body known in the art or to be developed) out of the rim flushing valve, and not under the flow of the jet flushing fluid JF through the jet flushing valve, thus eliminating the possibility of air entering the closed jet fluid path 1. The rim pathway can be maintained in communication with the air by connecting an overflow tube within the rim pathway without affecting the features of the present invention.

The jet flush valve 70 and rim flush valve 80 assembly may comprise any standard commercially available flush valve and flapper design, including various designs known or to be developed in the art, such as a formalin 502(Fluidmaster502) flush valve. The peripheral valve may be electrically, mechanically or computer operated. Preferably, the toilet bowl assembly 10 has at least one jet flush valve assembly 70 and at least one rim flush valve assembly 80, the jet flush valve assembly 70 being configured for delivering fluid (e.g., flush water) to the jet 20, the rim flush valve assembly 80 being independently configured for delivering fluid to the rim outlet port. The flush valve assembly used in the present invention may be configured to deliver independent fluid flows to the main flush valve of the rim and nozzle or, more preferably, the flush valve assembly includes at least one jet flush valve assembly 70 and at least one rim flush valve assembly 80 positioned to deliver independent fluid flows. The flush valve assembly may be any suitable flush valve known or to be developed in the art, such as described above with respect to embodiment 10 and

flush valves

70, 80.

The at least one jet flush valve assembly 70 and the at least one peripheral flush valve assembly 80 may also be a dual flush valve assembly. An example of a flush valve assembly known in the art for possible preference for use in the embodiments herein can be found in U.S. patent No.8,266,733B2, the relevant portions of which are incorporated herein by reference. Both valves may be opened and closed simultaneously, or at different times in the flush cycle to further optimize performance. In order to make the bowl cleaner with cleaner post-flush water, it is necessary to open the rim flush valve before opening the jet flush valve. In the preferred embodiment of 6.0 liters/flush, the rim flush valve is opened upon initiation of the flush cycle, the rim flush valve being closed at about 0.1 seconds to about 5 seconds into the cycle, whereas the jet flush valve is opened at about 1 second to about 5 seconds into the cycle and closed at about 1.2 seconds to about 10 seconds.

For toilets with very low flush volumes, such as 3 liters/flush, the rim flush valve is open at the beginning of the flush cycle and closed at about 1 second to 3 seconds into the cycle, whereas the jet flush valve is open at about 0.1 second to about 3 seconds into the cycle and closed at about 1.2 seconds to about 3 seconds. In the embodiments herein, for a trapway of 54mm diameter, the start-up siphon requires only about 1 liter of volume from a fully filled closed jet channel, so that the present invention is applicable to toilets that operate at volumes of 2 liters or less, the flush volume depending on the desired effect of bowl cleaning and the desired amount of water directly for this function.

Another embodiment of a dual flush toilet assembly opens the dual flush valve as a rim flush valve upon initiation of a flush cycle and then triggers the jet flush valve (either single flush or dual flush) to open after the rim dual flush valve. The amount of water delivered to the rim for cleaning the pre-siphon is about 1 liter/flush to about 5 liters/flush, and preferably about 2 liters/flush to about 4 liters/flush, and the amount of water delivered through the jet flush valve for creating the siphon is about 1 liter/flush to about 5 liters/flush.

Another embodiment of a flush valve assembly is shown in fig. 69 and 70. Except for the noted differences, the valve assemblies as described in this embodiment may be similar to the embodiments of

peripheral valve assemblies

80, 1180, etc. and the embodiments of

jet valve assemblies

70, 570, 670, 77, 870, 970, and 1170 described herein. In the dual valve assembly described above, each valve assembly is capable of moving relative to the other valve assembly. With sufficient movement of the valve assembly, the alignment with the flush actuation rod may change, causing possible variations in the timing of the valve opening and possible degradation of the performance of the flush mechanism. While the valve assembly is described with respect to a siphonic toilet, one of ordinary skill in the art will appreciate based on this disclosure that the valve assembly may be used with any style of toilet, including a direct flush toilet.

In this embodiment, as shown in FIGS. 69-70 and 78-79, a valve assembly 1180 is provided and is configured to be connected to a second valve assembly 1170. Valve body 1131 of valve assembly 1180 may include a first junction 11210 for associating valve body 1131 with a second valve body 1121 of second valve assembly 1170. Valve assembly 1180 may also have a valve cap 1182. As best seen in fig. 78, the first junction 11210 is capable of connecting with a second junction 11220 on the second valve assembly 1170 to form a junction 11200, or for maintaining a distance d between the valve assembly 1180 and the second valve assembly 1170 as discussed further below_VOther configurations that are constant. Valve assembly 1180 preferably includes a seal 11170 that is preferably secured to a rigid cover 11180 as described in the embodiments below using locking tabs 11173 as described and illustrated in fig. 73-77. Specifically, seal 11170 should include a sealing surface 11171 and a locking surface 11172, where locking surface 11172 has a plurality of locking lugs 11173. Locking tabs 11173 may be inserted into corresponding openings 11188 in rigid cover 11180. Rigid cover 11180 can then be flexed with seal 11170 through the use of peel-away section 11182 and lift-off section 11183 to provide a gradual opening of valve cover 1182.

While the valve assembly has been described herein and shown in the figures using the reference numbers associated with the rim valve assembly, and the second valve assembly has been described and shown in the figures using the reference numbers for the jet valve assembly, it is understood that the valve assembly may be the rim valve assembly 1180 and/or the jet valve assembly 1170. Likewise, the second valve assembly may be a peripheral valve assembly and/or a jet valve assembly.

Both valve assembly 1180 and/or second valve assembly 1170 may include an overflow tube 1191 configured to allow liquid to enter

valve body

1121 or 1131 and/or to allow air to escape upward during flushing when

valve cap

1173 or 1182 is closed. The overflow tube 1191 on one or more of the valve bodies 1121 and/or 1131 preferably has a removable cap 11201 for use when the overflow tube 1191 is not desired.

Another embodiment may optionally include a multiple flush valve assembly 11205, as shown in FIGS. 78 and 79. Multiple flush valve assembly 11205 preferably includes a first valve assembly 1180 and a second valve assembly 1170. First and

second valve assemblies

1180, 1170 may be included in

embodiments

10, 110, 210, 310, 410, 710, 1010, etc. herein. The multi-flush valve assembly 11205 may also include a first junction 11210 on the first valve body 1131 and a second junction 11220 on the second valve body 1121. The first valve assembly is preferably a rim valve assembly 1180 and the second valve assembly is preferably a jet valve assembly 1170.

Fig. 78 shows an enlarged front view of the joining device 11200. The peripheral valve body 1131 preferably includes a first junction 11210 and the jet valve body 1121 preferably includes a second junction 11220. The first and

second joints

11210, 11220 are configured such that the first and

second joints

11210, 11220 interlock to associate the first and

second valve assemblies

1180, 1170. The configuration of the first and

second junctions

11210, 11220 refers to the shape of the elements that enable the elements to interlock, and the shape of the junctions will be discussed in detail below. Optional attachment 11200 is preferably used to maintain a constant distance d between the first and

second valve assemblies

1180, 1170_V. The connection provided by the linkage 11200 minimizes movement of the valve assemblies relative to each other, thereby keeping the flushing performance constant.

The first junction 11210 is preferably located closest to the jet valve blockThe rim edge 11211 of the outer edge valve body 1131 of the piece 1170 extends. The first junction 11210 preferably has a downward hook formed by two

vertical sections

11212 and 11213 and a horizontal section 11214. The first vertical section 11212 may be connected to or integral with the rim 11211 of the rim valve body 1131 and may extend upward from the rim valve body 1131 and connect with the horizontal section 11214 at the top 11215 of the first vertical section 11212. Height (h) of first vertical section 11212_lVS) Preferably from about 10mm to about 30 mm.

The horizontal section 11214 may extend substantially perpendicularly away from the first vertical section 11212 and the rim 11211 of the rim valve body 1131 toward the jet valve assembly 1170 by slightly more than the distance d between the rim valve assembly 1180 and the jet valve assembly 1170_VLength l of_HS. Distance d between peripheral valve assembly 1180 and jet valve assembly 1170_VMay be variable and may depend on the manufacturer of the toilet tank. Preferred distance d between peripheral valve assembly 1180 and jet valve assembly 1170_VFrom about 2mm to about 10 mm. Using these distances, the preferred length l for the horizontal section 11214 of the first junction 11210_HSFrom about 4mm to about 12 mm.

Preferably, the second vertical section 11213 is connected to the end of the horizontal section 11214 furthest from the outer rim valve body 1131 and extends downward toward the bottom of the water tank and is generally parallel to the first vertical section 11212. Height l of second vertical section 11213_2VSSo that it is sufficiently interlocked with the second junction 11220. Preferred height h of second vertical section 11213_2VSFrom about 3mm to about 8 mm. However, the height h_2VSDepending on the height h of the first vertical section_1VSAnd a height h of the upward protrusion 11222 of the second joint 11220_UP. Height h of upward protrusions 11222_UPThe greater the required height h of the second vertical section 11213_2VSThe smaller. However, the size of the contact area of the second vertical section 11213 and the upward protrusion 11222 that abut each other may not be important. The contact area is preferably sufficient to maintain the connection of the first connection portion 11210 and the second connection portion 11220.

The first junction 11210 is depicted as having three

sections

11212, 11213, 11214. However, it should be understood that all three sections may be integrally formed together as a single component, and may also be integrally formed with valve body 1131. The first connection is preferably molded as an integral part of the valve body through the use of injection molding, but any method of formation is contemplated, including but not limited to compression molding, resin casting, and three-dimensional printing. In addition, one or more of the sections may be separately formed and connected to the other sections prior to use, such as by welding, interference fit, or other known connection methods. In the case of using any method of forming the first connection 11210, a plastic material or a metal material may be used.

Preferably, the second junction 11220 extends from an edge 11221 of the jet valve body 1121 located closest to the peripheral valve assembly 1180. The second linking portion 11220 is preferably substantially rectangular when viewed from the front of the water tank with an upward convex portion 11222. In one embodiment, the second joint 11220 has a horizontal element 11223 and an upward protrusion 11222. The horizontal member 11223 may be connected to or be an integral part of the edge 11221 of the jet valve body 1121 and extends perpendicularly from the edge 11221 toward the outer edge valve body 1131. Horizontal element 11223 may be sized such that it extends substantially the entire distance d between peripheral valve assembly 1180 and jet valve assembly 1170_V. Preferred length l of horizontal member 11223_HEFrom about 10mm to about 20 mm. However, the distance may be dependent on the distance d between

valve assemblies

1180 and 1170_VBut may vary. Height h of horizontal element 11223_HEPreferably sized so that the top 11224 of the horizontal element 11223 is just below the bottom 11217 of the second vertical section 11213 of the first junction 11210. Height h of horizontal element 11223_HEMay vary from about 2mm to about 27mm, with the height h of the upward protrusions 11222_UPAnd more importantly. Preferred height h of horizontal member 11223_HECorresponding to the preferred dimensions of the three

sections

11212, 11213, 11214 of the first junction 11210, such that the first and

second junctions

11210, 11220 are associated with each other to maintain the distance d between the

valve assemblies

1180 and 1170_VIs relatively constant.

Preferably, the upward protrusion 11222 of the second joint 11220 extends upward from the top of the horizontal member 11224, wherein the upward protrusion is towardThe front of the upper ledge 11222 is preferably aligned with the front of the horizontal member 11223. The upward protrusion 11222 is preferably sized to fit within the hook formed by the first connection 11210. Height h of upward protrusion 11222 of second coupling portion 11220_UPMay be sufficient to interlock with the second vertical section 11213 of the first junction 11210 such that the peripheral valve body 1131 and the injection valve body 1121 are fixed to one another and cannot move toward or away from one another. Preferred height h of upward protrusions 11222_UPAbout 2mm to about 5mm, but depending on the height h of the horizontal member 11223_HEAnd the height h of the first and second

vertical sections

11212, 11213 of the first junction 11210_1VSAnd h_2VS. Preferred length l of upward protrusions 11222_UPFrom about 1mm to about 5 mm. The preferred length may be selected such that the upward protrusion 11222 fits just within the hook portion of the first junction 11210, minimizing movement of both

valve assemblies

1180 and 1170 toward and away from each other.

Although the second joint 11220 has been described as having two

segments

11222 and 11223, the preferred second joint 11220 is made from a single piece of material. In particular, the second junction 11220 may be made of a metal or polymer material and is preferably a polymer material that has been molded in the shape described for the above preferred embodiment. Preferably, the second joint 11220 is integrally formed with the valve body 1121.

The first and

second joints

11210 and 11220 may also be provided as separate items that may be mounted on each

valve assembly

1180 and 1170 after the valve assemblies have been installed in the toilet. To this end, the first and

second connections

11210, 11220 may include a strapping mechanism, a clamping mechanism, a tab, or other connection device capable of securing the first and

second connections

11210, 11220 to the first and

second valve bodies

1131, 1121, respectively. In addition, the first and

second coupling portions

11210 and 11220 may be integrally formed and the coupling device 11200 may have only one piece. The attachment 11200 as a single piece may be installed using attachment elements including straps to be hooped around the assembly and/or clamping devices for attaching to the sides of two valve assemblies. For example, a single rigid article may be affixed toTwo valve assemblies. Such an article should be able to maintain the distance d between the two

valve assemblies

1180 and 1170_VSubstantially constant. It should also be noted that the

valve bodies

1121 and 1131 can also be formed as a single unit, thereby eliminating the need for the joining device 11200.

Preferably, the first and

second joints

11210, 11220 are made of a rigid material. However, flexible materials may also be used for one or both of the joints. If the upward protrusions 11222 are made of a compressible material, their length l_UPMay be enlarged such that the upward protrusions 11222 may be compressed to fit within the hook portions of the first connection 11210. If a flexible material is used for some or all of the elements described with respect to the preferred first and

second joints

11210, 11220, a thickness and/or flexibility may be used that does not allow the first and

second valve assemblies

1180, 1170 to significantly move relative to each other.

When the hitch 11200 is viewed from above in FIG. 79, the width W of the hitch 11200 extending laterally across the tank_LDIs visible. The width of the first joint 11210 and the width of the second joint 11220 are preferably equal and may be sized such that slight movement of one or both of the

valve bodies

1121 and 1131 in the direction across the tank does not cause the interlock to be released. Preferred width W of coupling device 11200_LDFrom about 20mm to about 40 mm. Although the width of the first junction 11210 and the width of the second junction 11220 are preferably equal, it should be understood that the width of the first junction 11210 or the width of the second junction 11220 may be larger and that the junction 11200 should be able to maintain a constant distance d between the

valve assemblies

1180 and 1170_V. Both the front side 11231 of the coupling device 11200 and the back side 11232 of the coupling device 11200 may be open, which may allow for easier installation and removal of one or both valve bodies 1121 and/or 1131 from the water tank.

One possible installation method for the multi-valve assembly 11205 according to this embodiment is to install one of the

valve assemblies

1180 or 1170 in the tank and then install the

other valve assembly

1180 or 1170 separately. The valve assemblies are preferably individually mounted and secured to the bottom of the tank using conventional tank-to-bowl mounting methods. Additionally, a tank-to-bowl gasket set as described below may be used. Each

valve body

1121 and 1131 can be inserted through a separate hole in the bottom of the tank. The first and

second junctions

11210, 11220 are preferably interlocked when the second valve assembly 1170 is installed. By using this method, one valve assembly can be removed, repaired or replaced without having to adjust or remove another valve assembly.

Another embodiment of a multi-valve assembly 11205 including a linkage 11200 can have an integral multi-flush valve assembly 11206 as shown in fig. 80 and 81. The integrated multi-flush valve assembly 11206 can include a first valve assembly 1180 and a second valve assembly 1170 disposed together as a single unit. The integrated multi-flush valve assembly 11206 can have a first junction 11210 and a second junction 11220 that are permanently affixed to each other as described in the embodiments. Additionally, the first and second valve bodies may be molded as a unitary structure. The affixed linkage 11200 is preferably permanently affixed to the first valve assembly 1180 and the second valve assembly 1170 to form an integral multi-flush valve assembly 11206. While the integral multi-flush valve assembly 11206 is permanently connected to the entire structure, it should be understood that the junction 11200 may be a separate element and may be permanently connected with the separate first and

second valve bodies

1131, 1121 prior to installation within a toilet to form the integral multi-flush valve assembly 11206.

Preferably, to form the integrated multi-valve assembly 11206, the two

valve bodies

1121 and 1131 and the connection 11207 connecting the two valve bodies are integrally formed with each other. The two

valve bodies

1121 and 1131 can be any of the embodiments as disclosed herein, e.g., 10, 110, 210, 310, 410, 1010, 1110, etc., or can be conventional valve bodies as are known in the art. Preferably, the same material of connector 11207 can be molded along with

valve bodies

1121 and 1131 so that the entire structure is a single piece. The attachment may also be permanently attached to the

valve bodies

1121 and 1131 after formation. The connector 11207 is preferably any size sufficient to maintain a constant distance between the valve bodies, depending on the material used. Preferably, the connector 11207 is made of a polymer material such as ABS resin and has a height h of about 2mm to about 10mm_CPAbout 10mm to about 30mm wideDegree W_CPAnd a length l of about 2mm to about 12mm_CP. Length l_CPDepending on the distance between the valve openings in the cistern. The connector 11207 has a rectangular cross-section when taken transverse to the tank. Any cross-sectional shape is contemplated and the shape may be circular, oval, triangular, octagonal, etc.

Another embodiment includes an installation method using an integral multi-flush valve assembly 11206, wherein the first valve assembly 1180 and the second valve assembly 1170 are permanently connected to each other. Additionally, this installation method can be used to install two

separate valve assemblies

1170 and 1180 when the linkage 11200 is interlocked before each valve is installed in the tank. In embodiments including the integrated multi-flush valve assembly 11206, the first valve body 1131 and the interlocking second valve body 1121 may be simultaneously installed within the tank and secured to the bottom of the tank using conventional tank and bowl mounting methods. Additionally, a tank-to-bowl gasket set as described below may be used. Each

valve body

1121 and 1131 can be inserted through a separate hole in the bottom of the tank. If not permanently attached, the

separate valve assemblies

1170 and 1180 may be installed in an attached fashion. In this manner, it is contemplated that each of

valve assemblies

1180 and 1170 may be disengaged from each other and removed from the water tank, respectively. However, separate removal would be difficult or impossible for the one-piece multi-flush valve assembly 11206 where the first and

second valve assemblies

1170 and 1180 are permanently affixed to each other.

In embodiments such as a toilet bowl assembly 110, a separate manifold is used to separate fluid introduced into the bowl assembly 110 from at least one flush valve assembly and deliver different flow rates to the jet 120 and rim 132. This is in contrast to conventional toilet designs where fluid enters the bowl through a toilet inlet, flows into an open separate manifold and then flows down the spout 120 and rim 132 in an uncontrolled or gravity-controlled manner. In such prior art designs, the amount and nature of fluid flow to the rim or direct nozzle is difficult to control, and due to gravity and flow momentum, the fluid is generally more likely to flow to the nozzles on the rim. However, by isolating the fluid flow to the nozzle 120 from the fluid flow to the rim 132, the fluid flow is controlled and the nozzle and rim may receive a desired flow rate. Furthermore, it is able to maintain a closed jet fluid pathway 101 comprising a priming jet channel 138 and preferably a priming jet manifold 112.

Any optional jet manifold 112 is preferably preformed in the ceramic or other material of construction of the toilet bowl and is arranged in overlapping and/or juxtaposed relation to the rim manifold. The injection manifolds may be arranged side by side but not all at the same height. The injection manifold 112 may have an injection manifold outlet opening 116 for delivering fluid to a nozzle inlet port 118. The rim manifold 122 may include a rim manifold inlet opening 124, the rim manifold inlet opening 124 configured to receive varying amounts of fluid from the rim flush valve assembly 180, such as from about 0.1 liters to about 5.5 liters, and preferably from about 0.5 liters to about 4.5 liters. The rim manifold 122 also has a rim manifold outlet opening 126, the rim manifold outlet opening 126 for delivering fluid to a rim inlet port 128. Fluid flow through the nozzle 120 may travel directly down the jet channel 138 and out the nozzle outlet port 142 and then into the sump region 140 at a different time than water flowing through the rim channel 134. One of these flows may stop before the other, but preferably these flows may occur simultaneously for at least a portion of the flush cycle. The flow rate is selected to maximize cleaning of the interior surface 137 of the toilet bowl 130 prior to fluid exiting the sump area 140.

In another embodiment, the rim channel 134 may be directly powered by the line pressure of a typical residential or commercial water line. The opening and closing of flow to the rim may be controlled by a mechanical control valve (similar to the toilet fill valves currently in use) or a solenoid valve.

Urinals such as 30, 130 herein may have a variety of configurations, but most urinals are pre-formed to be generally circular or oblong or elliptical in shape when viewed transversely from the top of the urinal. In the embodiment described and illustrated herein, bowl 30 has a generally oval shape. Bowl 130 has a rim 132 disposed about its upper periphery, rim 132 defining a rim channel 134. The rim channel has an inlet port 128 (at the transition point between the manifold and the rim channel where the rim channel cross-section becomes more uniform) and at least one rim outlet port 129 (preferably a plurality of such outlets), the inlet port 128 being in fluid communication with the rim manifold outlet opening 126, the rim outlet port 129 being in fluid communication with the interior area 136 of the bowl assembly 110. The bowl 130 also has a jet 120, the jet 120 being positioned such that the jet channel (or channels) preferably passes along the outer surface 135 of the bowl 130 or within the wall of the bowl so that the jet outlet port 142 is located in the lower portion 139 of the bowl 130.

In various embodiments herein, such as the toilet 10, the nozzle 20 defines at least one jet channel 38, the jet channel 38 having a nozzle outlet port 42, the nozzle outlet port 42 configured for discharging fluid to the sump area 40, then to the inlet of the trapway 44, and then to the toilet outlet O, which may be connected to the sewer outlet.

In the embodiment of fig. 16, some of the flush water passes directly through the rim channel 134 and through the opening 129 in the rim 132, thereby providing liquid communication between the channel 134 and the interior area of the bowl 130, enabling water to be dispersed over the entire surface of the bowl 30, facilitating bowl cleaning during a flush cycle. The water flowing through the rim channel 134 may also be pressurized upon exiting the rim outlet port 129 in some embodiments herein or from an external fluid source as described above. Depending on the size of the outlet port, the toilet geometry, and the flow rate, pressurization may create a strong pressurized water stream for cleaning the bowl and facilitating siphoning. The remaining flush water from the separate jet valve assembly 170 is directed to the nozzle 120.

The jet 20, 120 and the at least one jet channel 38, 138 herein provide more energetic, faster flush water to the

trapway

44, 144, enabling toilets designed with even larger trapway diameters, however, minimizing bends and restrictions that can affect work and improving waste removal performance relative to non-jet and/or rim jet urinals should be considered.

The at least one jet channel 38 is designed to extend within the interior of the toilet bowl assembly 10 so as to pass around the outer surface of the toilet bowl 30, but is also positioned at least partially within the space defined by the toilet bowl assembly body 10, which is generally below the interior regional wall 36 of the bowl 30. Multiple jet channels of different sizes may be used, for example, two symmetric channels on either side of the bowl 30 to deliver a "dual feed" fluid flow to the jet 20.

The nozzle outlet port 42 is configured for discharging fluid from the jet channel 38 to the sump region 40 in fluid communication with the trapway 44. In the embodiments herein, the nozzle outlet port 42 preferably has a height Hjop, as shown in fig. 23, of about 1.0cm to about 10cm, preferably about 1cm to about 6cm, and more preferably about 1cm to about 4cm, measured longitudinally across the inner diameter of the jet channel 38. Regardless of the height Hjop, the cross-sectional area of the nozzle outlet port should be maintained at about 2cm²To about 20cm²More preferably about 4cm²To about 12cm²And most preferably about 5cm²To about 8cm². In one embodiment herein, the height Hjop of the nozzle outlet port 42 at the upper surface 54 or highest point is preferably at a water seal depth x as shown below the upper surface 56 of the inlet 49 to the trapway 44, and the water seal depth is measured longitudinally through the sump region 40. The seal depth x is preferably from about 1cm to about 15cm, more preferably from about 2cm to about 12cm, and most preferably from about 3cm to about 9cm to help prevent air from entering the jet channel 38 through the outlet port 42. The distance should also preferably be at or below the minimum liquid level in the sump area 40 to prevent interruption of the jet passage 38 and to maintain the jet passage 38 of the toilet bowl assembly 10 primed using fluid from the jet flush valve assembly 70 or other flush valve before or after the flush cycle is initiated or completed.

As described above, maintaining the priming jet channel 38, i.e., the closed jet flow path 1, greatly reduces turbulence and flow restriction, improves toilet performance, and enables the use of a smaller volume of water to initiate siphoning. The air in the jet channel 38 obstructs the flow of the rinsing water and restricts the flow of the nozzle 20. Additionally, air, if not purged, will exit the jet outlet port 42 and enter the trapway 44, which will delay trap siphoning and affect the purging of the bowl 30 of fluid and waste.

To improve the bowl cleaning function in rim channel embodiments such as 110, it is also a preferred option to design the toilet assembly so that the rim is pressurized during the flush cycle. Pressurization of the rim channel 134 is preferably achieved by maintaining the relative cross-sectional areas of the following relationship (I):

A_rm>A_rip>A_rop<6cm² (I)

wherein A is_rmIs the longitudinal cross-sectional area, A, of the peripheral manifold 122_ripIs the cross-sectional area, A, of the peripheral inlet port 28_ropIs the total cross-sectional area of at least one of the peripheral outlet ports 29. Preferably, the cross-sectional area A of the injection manifold 112_jmIs about 20cm²To about 65cm²Cross-sectional area A of peripheral manifold 122_rmIs about 12cm²To about 50cm². Cross-sectional area A of injection manifold 12_jmMeasured at a distance of about 7.5cm downstream of the center of the jet flush valve inlet opening 162. Similarly, the cross-sectional area A of the rim manifold 122_rmMeasured about 7.5cm downstream from the center of the peripheral flush valve inlet opening 164. Maintaining these parameters of the water passage in a preferred geometry or otherwise avoiding performance-affecting restrictions or bends, a toilet bowl assembly 110 that maximizes the potential energy available through the gravitational potential of the water (from the fluid source or tank) can be achieved, which becomes especially important when smaller amounts of water are used in a flush cycle. Furthermore, maintaining the water channel geometry at these parameters and avoiding restrictions or too small a passageway in the jet or trap enables better rim and jet channel pressurization in direct injection toilets, maximizing waste removal and bowl cleaning performance. Since there may be a plurality of peripheral outlet ports, the size of which may preferably vary according to the desired design, the area of the peripheral outlet port should be the sum of all the individual areas of each such outlet port. Similarly, if multiple jet flow channels 118 or multiple jet outlet/inlet ports are used, the jet channels 118 or any of the multiple ports 142 will be the sum of the areas of the jet channels or jet ports, respectively. Further, when the pressurized outer rim described in U.S. patent No.8,316,475 is used, in order to realize the advantage of outer rim pressurization, it is preferable to inject air throughThe channels should not be made too small or narrow to avoid clogging and poor performance, and U.S. patent No.8,316,475 is incorporated herein in its part relating to the dimensions of the rim and jet channel, and the geometry of the toilet in a pressurized rim siphon toilet design.

The sump area 40 of the toilet bowl 30 in embodiment 10 collects water from the rim, jet channel 38, flush water and drain. The sump area 40 is located in the bottom 39 of the bowl 30 and defines a well 41 for the jet 20 through the interior surface 36 of the bowl 30, the well 41 extending longitudinally from a well inlet end 46 to a well outlet end 50, wherein the inlet end 46 has an opening 48 for receiving fluid from the jet outlet port 42. The trap outlet end 50 has an opening 52, the opening 52 for fluid exiting the bowl to the inlet of the trapway 44. The jet trap 41 has a water seal depth x as shown in fig. 22, 24 and 27, which is the distance between the uppermost point of the upper surface 54 of the inlet to the trapway 44 and the uppermost point of the upper surface 54 of the jet outlet port 42.

The water seal depth x of the jet trap is preferably measured to maintain a distance of about 1cm to about 15cm, more preferably 2cm to about 12cm, and most preferably 3cm to about 9cm, to assist in maintaining a siphon within the sump region 40. Jet trap seal depth x is sufficiently large to establish a buffer level of fluid in sump region 40, helping to ensure that the trapway will break the siphon before the water level in jet trap 41 drops to a depth that would disrupt the leak tightness of jet channel 38, thereby preventing air from entering jet channel 38 and maintaining jet channel 38 in a fully primed state. Conversely, in some embodiments, the jet trap seal depth x may be equal to 0 or less than 0 (when above the trap) and the jet channel 38 and path 1 remain primed by adjusting the flow rate through the jet flush valve assembly 70.

In the sump region 40, at least a portion of the inner surface 36 has a sloped portion 58, which sloped portion 58 may slope upward from the nozzle outlet port 42 toward the trap inlet, thereby increasing the water seal depth x of the jet channels 38 and reducing the likelihood of air entering the jet channels 38 during or after a flush cycle. The seal depth x may be further extended by forming a jet channel 38, which jet channel 38 temporarily lifts to a nozzle outlet port 42 at the floor of the sumpAnd is lower than the bottom plate of the water pit. The seal depth x may also be increased by reducing the diameter of the nozzle outlet port 42. Preferably, the height H of the nozzle outlet port 42_jopThe reduction to form a circular, oval or oblong outlet will help maintain a sufficient cross-sectional area and maintain a sufficient flow through the nozzle 20 when increasing the water seal depth x of the jet channel 38.

Fig. 20 shows an alternative embodiment (generally referred to herein as assembly 1010) in which features are the same except that tank 1060 has features of a separate reservoir as described below, and like reference numerals refer to like elements herein. The water tank 1060 may have at least one jet reservoir 1068 and at least one rim reservoir 1072, the jet reservoir 1068 may have a jet fill valve 1090 and at least one jet flush valve assembly, which may be the same as in assembly 10, such as configured for delivering fluid to the jet manifold inlet opening 1062. The rim reservoir 1072 may have a rim fill valve 1092 and at least one rim flush valve assembly, which may be the same as in assembly 10, configured for delivering fluid to the rim spray manifold inlet opening 1064. This may be a partial lateral spacing of the tank 1060 that allows for the use of one fill valve, or the tank separation may be a permanent pre-molded casting of the tank into multiple reservoirs. If there is optionally an overflow in both the jet reservoir 1068 and the rim reservoir 1072, the overflow must be operated by the rim flush fluid stream RF 'rather than the jet flush fluid stream JF'.

Fig. 23 and 24 illustrate yet another embodiment generally referred to herein as assembly 210. All other things being equal to the embodiment 10 except that the sump area sloped wall feature is configured to slope or taper upwardly toward the entrance of the trapway 244 as described below. The sump area wall 258 shown in fig. 23 and 24 is designed to extend around the sump area 240 and surround the sump area 240. The jet outlet port 242 is positioned such that fluid JF "from the jet channel 238 enters the bowl sump area 240 to merge with fluid from the rim entering the toilet bowl through at least one rim outlet port (not shown). The jet fluid stream JF "and the rim fluid stream RF" merge at this point (with waste or other fluid, if present) and then flow together generally downward along the interior bowl surface 236, flowing through the sump wall into the sump region 240, into the trapway inlet 244 for discharge through the sewer line. At least a portion of the wall 258 may be sloped upward to increase the water seal depth x of the jet channel 238, which helps prevent air from entering the jet channel 238 during or after a flush cycle. When the water seal depth x is sufficiently large, it forms a buffer flush level in the sump region 240, helping to ensure that the trapway 244 breaks the siphon before the water level in the jet trap 241 drops below a depth that would breach the tightness of the jet channel 238, thereby preventing gas from entering the jet channel 238 and maintaining the jet manifold 212 in a fully primed state.

Fig. 25-27 illustrate an embodiment that differs from the embodiment of fig. 16-24, and is generally referred to herein as assembly 310. All other aspects are the same as embodiment 10, except for the feature that at least one jet channel 338 is below the bowl sump area 340 as described below. The at least one jet channel 338 is designed to extend within the interior of the toilet bowl assembly 310 so as to be located behind the interior area wall 336 and the sump area wall at the rear of the bowl 330, but is also located at least partially within the space defined by the toilet bowl assembly body 310 below the interior area wall 336 and the sump area wall 358 of the bowl 330. At least one spray channel 338 passes below the sump region 340 and terminates within a sump region wall 358, thereby positioning the nozzle outlet port 342 directly opposite the inlet of the trapway 344. An advantage of this configuration is that at least one jet channel 338 will more easily maintain a flush and thus eliminate air in the jet channel 338 because the design can maintain full jet fluid JF' "capacity under gravity and the water level in the jet channel is inherently lower than the fluid or flush water level in the bowl both at pre-start and after start-up of the flush cycle. The routing of the jet channels 338 under the sump floor further increases the water seal depth x of the jet channels 338, which is not possible with a sloped sump floor embodiment such as that depicted in fig. 25 and 24, which further ensures that the trapway breaks the siphon before the water level in the jet trap 341 drops to a depth that would break the tightness of the jet channels 338, thereby preventing air from entering the jet channels 338 and maintaining the jet manifold 312 in a fully primed state.

Fig. 28 illustrates an embodiment that differs from the embodiment of fig. 16-27, and is generally referred to herein as assembly 410. The features are otherwise identical except for the features of the upper peripheral portion 433 surrounding the upper periphery of the bowl 430 as described below. The rim 432 has an upper peripheral portion 433, the upper peripheral portion 433 being positioned around the interior of the upper periphery of the bowl 430 such that fluid RF "" from the rim manifold enters the bowl for flushing waste down into the sump area 440 and merges with fluid entering the toilet bowl from the jet channel 438 and exiting the jet outlet port 442. The jet fluid flow JF "" and the rim fluid flow RF "" (and with the waste water and other fluids, if present) merge at this point and then flow generally downward along the bowl inner surface 436 together and over the sump wall 458, into the sump region 440, into the trapway inlet 444 for discharge through the sewer line. When the water seal depth x is sufficiently large, it creates a fluid buffer level in sump region 40, helping to ensure that the trapway breaks the siphon before the water level in jet trap 41 falls below a depth that would disrupt the seal of jet channel 438, thereby preventing gas from entering jet channel 438 and maintaining the jet manifold in a fully primed state.

In another embodiment, in a frameless version of the embodiment shown in fig. 28, the flow of fluid enters from behind the dispenser and around the rim inlet port of the rim shelf in two opposite directions on the upper peripheral portion 433 and flows at least partially around the interior surface of the bowl, thereby creating a cleaning action. In a preferred embodiment, the upper peripheral portion 433 may be formed to direct wash water downwardly as it flows around the perimeter of the bowl 430. This embodiment is similar to the assembly of fig. 1-13 but has a different peripheral shelf design.

In a preferred method embodiment of the present invention, the jet is primed with fluid JF from the at least one jet flush valve assembly 70, before and after the flush cycle is initiated, for example by manufacturing a toilet bowl assembly 10 such as described herein. The methods herein may be practiced in any of the embodiments herein, including

assemblies

10, 1010, 110, 210 and 310, 410, and the like. However, for convenience, exemplary embodiments of the present method will be described in connection with the assembly 10 shown in fig. 1-13. Similar components from alternative embodiments may be used if other embodiments are used to practice the invention.

When the toilet bowl assembly 10 is installed on a mounting surface, the jet manifold 12, the jet inlet port 18, and the at least one jet channel 38 are primed prior to initiation of a flush cycle by opening a flap or cover of the jet valve flush assembly 70 and allowing fluid (e.g., flush water) to flow into the jet inlet port 18 and the at least one jet channel 38. The priming will occur automatically when the flush cycle is first activated. When the rim flush valve 80 and the jet flush valve 70 are closed, water will remain in the jet channel 38 and jet manifold 12, held in place by atmospheric pressure exerted on the surface of the water in the bowl 10. If any small bubbles remain in at least one of the jet channels 38 or jet manifold 12 after the first flush, these bubbles will be expelled in the subsequent flush resulting in a fully primed system.

After initial priming of the toilet bowl assembly of the embodiments herein, the user will initiate a flush cycle. In a standard prior art toilet bowl stack, a flush valve assembly and overflow tube such as described herein are provided for use. Both the flush valve cover and the bulb connected to the flush valve assembly are connected to the pivot arm. The pivot arm is attached to the top end of the flush valve cover and includes a link for attachment to a chain, which can be used to lower and raise the valve cover by any standard valve actuator, such as a flush handle and stem. In use, the pivot arm of the flush valve cover is attached to the overflow tube using a standard connection that protrudes from the overflow tube and opens and closes over the inlet opening of the flush valve assembly.

In the present invention, when a flush cycle has been initiated or actuated, the flush valve cover opens on both the rim flush valve assembly and the jet flush valve assembly and allows fluid to flow into the nozzle and the rim through at least one jet flush valve assembly 70. Which may be turned on simultaneously or with a time delay system known or to be developed in the art (e.g., using the embodiments of the

flush actuation rods

75 and 1175 described above) to obtain an optimal flow rate through the toilet bowl assembly 10.

After the flush cycle is initiated and after the flush cycle is completed, the nozzle inlet port 18 and the at least one jet channel 38 remain primed as long as: (1) the water depth in the reservoir feeding the jet flush valve before the jet flush valve 70 is closed is not allowed to fall to the level of the inlet 71 to the jet flush valve 70; (2) the sealing of the spray channel 38 is not broken during or after the flush cycle. When both conditions are met, the closed jet flow path 1 including the jet channel 38 and the jet manifold 12 will remain fully primed and ready for the next flush cycle.

The invention will now be described in connection with the following non-limiting examples:

examples of the invention

Table 1 summarizes data for 20 flushes completed using three different toilets. The present invention was tested based on the embodiments shown herein in fig. 1-13 and 29-34. The prior art toilets tested required 79-82% of the flush water to be directed into the nozzle to achieve the desired siphon hydraulic performance. Toilets made in accordance with the present invention provide substantially equivalent hydraulic performance while introducing less than 30% of the flush water into the nozzle, thereby allowing the remaining water to be used for significant improvement in toilet cleaning.

TABLE 1

Various embodiments

10, 110, 1010, 210, 310, 410, etc. herein may each benefit from variations of the jet flush valve herein. The jet flush valve design described above may be provided with optional, unique features to improve the operation of the various embodiments. In use, if the toilet is clogged, or for other reasons, the toilet needs to be slumped for various plumbing reasons, it is important that the clogging be relieved but that flow be prevented from returning up through the jet valve to the closed jet path (always in a primed state). In a conventional toilet, backflow is not a concern because it is vented to the atmosphere. In the present invention, the backflow needs to be considered due to the weight of water and the amount of water discharged from the spray passage. One method for retrofitting the jet flush valve herein to prevent backflow is to provide the jet flush valve with a backflow prevention device. Such an arrangement will now be described in connection with a jet flush valve or jet flush valve 70 similar thereto herein.

While the flush valve design discussed above is very effective against backflow of water that may occur in a dip, in some embodiments a higher level of protection may be required. Deliberately breaking the priming, i.e. letting air into the closed ejection channel and venting it to the atmosphere, greatly reduces the possibility of back flow.

Fig. 33-38 illustrate an embodiment of a jet flush valve (referred to herein as jet flush valve 570) having a flapper cover 573 and a backflow prevention mechanism 574 having a compression linkage configuration. The cover 573 may be identical to the cover 15 of the valve 70 of the assembly 10, the cover 573 being mounted with a first front connecting rod mount 593 for attaching a compression connecting rod. The linkage assembly in the backflow prevention mechanism 574 includes a first front link arm 575, the first front link arm 575 having a connection point P (shown in fig. 15, for example) for a chain C to connect to an actuating mechanism so that the cover 573 can be lifted. Such a chain may comprise floats as described above.

The first link wall is connected to the second link arm 576 by a hinge pin, such as pin 578, but other hinged connections, pins, living hinges, formed pins, rivets or similar mechanisms may be used. Similarly, the connecting arm 576 is connected to a third connecting arm 577 by a phase wire hinge connector, the third connecting arm 577 also being pivotally mounted to the rear hinge mount 579. In use, if the flapper is raised, the anti-backflow hold-down link is free to lift and bend as shown, thereby forming an angle of less than about 180 ° between the first and second link arms when fully open.

When closed, the anti-backflow device prevents flow from pushing back on the flapper cover 573 by positioning the connecting arms so that the first and second connecting arms are more aligned in their connecting regions R in a more rigid position in which they will not act on the point P chain C (see fig. 37 and 38 showing the valve in the closed position).

The anti-drainback mechanism 674 in another embodiment of the jet flush valve is a movable buoyant lift bonnet 694. 39-43 show the valve 670 in a closed position, wherein the poppet 694 is pressed in a sealing manner toward the area of the outlet 613 of the valve 670. The upward flush water on the closed valve again prevents water from entering the interior of the valve. When the valve is closed due to the lifting of the bonnet and pressure from within the primed closed flow path as described above, backflow cannot enter the bottom end of the jet flush valve. When a solid poppet bonnet is used (not floating), more operating force will be required and a spring or other tension mechanism can be used to connect the bonnet to the guide.

As shown in fig. 45-48, when open, the jet flush valve 670 allows full flow through the valve body due to lifting of the lid 673 (e.g., by a chain or other flush actuator as described above in connection with valve 70). When the cap 673 is raised, flush water enters the previous fill valve and continued downward flow pushes the poppet 694 out. The poppet 694 is preferably partially elastomeric or polymeric to sealingly engage the valve at the outlet 613. The poppet 694 is on a post 695 (the cross-sectional design may be ribbed, as best shown in fig. 45, or simply a cylinder).

The post has a top end 699 opposite the point where it connects to the poppet 694 and is configured with a flange 6100. This flange acts as a stop against the lifting column guide ring 699 at a central location within the valve body below the rib structure support configuration. As best shown in fig. 45, the ribs 696 extend outwardly from the central hub 697 in a "star" configuration. An opening 698 extends through the hub allowing the poppet to easily pass in an upward direction when the valve is in the closed position (see fig. 43). When open, the column moves downward under flow pressure until the flange 6100 contacts the guide ring 699 at a fully extended position so that lifting the bonnet 694 does not unnecessarily block flow.

Another embodiment of a back-spray flush valve 770 is shown in fig. 49-56. In this embodiment, the backflow prevention mechanism 774 is a hook 7101. The hook 7101 is installed at the front end of the cover 7102 of the jet flush valve 770, and the cover 7102 is different from those of other embodiments described below. Hook 7101 has an extended hook arm 7103, hook arm 7103 contacts hook 7104 located on the exterior of the injection valve body. The hook arm 7103 should have a gap g between it and the facing surface 7105 of the hook 7104, but the gap should be as small as possible to provide a tight closure against backflow, but not so small that the hook cannot be easily cleaned and swung around the hook 7104 when the valve is open, preferably the gap is about 1mm to about 5 mm.

In addition to the anti-reflux mechanism 774, a unique feature of jet flush valve 770 is cap 7102. The cover is not simply lifted off the baffle cover, but rather is a "peel-off" cover. This design enables the injection valve to be opened from the front of the lid along the edge towards the rear of the lid. The structure is formed to be flexible or partially flexible. An elastomer or other flexible polymer (e.g., flexible silicone or ethylene polymer chloride), or other similar material acceptable for use in plumbing fixtures, may be used for the flexible portion. The ability to peel the lid more slowly by peeling from the front portion 7106 of the valve cover 7102 up the edge 7105 towards the rear portion 7107 facilitates a reduction in actuation force when water is present above and below the lid. Applicants have found that the use of a flexible or semi-flexible cover that can be peeled along the edge is advantageous for achieving good self-priming performance of the jet flush valve and closed jet path. Rigid barrier covers, such as hard covers with standard disk seals, can present difficulties for self-priming. The valve 770 is peeled away and slowly opens, allowing any trapped air to escape. Preferably, at least about 50% of the cover 7102 is flexible, midway along the front portion 7106 of the cover, back toward the back portion 7107 of the cover. The rear half of the cover need not be flexible.

To operate the peel-off device and release the hook-like anti-backflow mechanism, when the valve is opened, the first chain C1 along with the flush actuation mechanism of the toilet releases the hook 7101, and once released, the front portion 7106 of the lid peels off and lifts upward. When raised, the hinged arms 7108 (which may be formed using any suitable hinge/hinge materials and structures described above in connection with embodiment 570) bend upward. A hinged arm 7108 mounts to an optional cover plate 7110 (which may be metallic, polymeric, or elastomeric) using a hinge mount 7109 to assist in peeling the front 7106 of the cover 7102 upward. Any suitable flush actuator may be used and/or modified for connection to C1, C2. Once the C1 has lifted the front of the lid upward by peeling at end 7105, the back of the lid is lifted. A separate float attachment is provided which may be a second chain C2 which may have the floats described above thereon. Other variations of float attachments for connecting the float to the rear of the cover may also be used, including a float assembly as described in more detail below and shown in fig. 88-90. As an alternative to the float attachment, a tether, rope, cord, stainless steel cable, rigid rod or wire may also be used with the float.

The interior of the valve 770 preferably also has a "star" configuration with structure formed by ribs 796, the ribs 796 connecting the body of the valve to the central hub 797, and openings 798 extending through the central hub 797. The flow can easily pass through the rib structure but this structure helps to support the weight of the wash water on the valve by extending radially across the body of the valve. The flap requires twice the force to open and the support is thus useful and is further designed to facilitate air escape through the use of shaped flaps or ribs as shown. The number of ribs can affect flow if the ribs are too large or formed in an inconvenient manner.

Fig. 64-68 show the same embodiment of valve 770, but with an optional overflow tube 791 thereon. The overflow tube 791 includes an upper housing 769, with each standard valve V included in the upper housing 769, which serves as a further restraint to backflow through the injection valve and which may allow air to enter and escape. The valve can be manually adjusted to an open position to disrupt perfusion and can collapse without backflow. Disruption of the perfusion may also be desirable in other situations, for example prior to maintenance or repair. Any suitable valve may be included herein, such as a ball valve, a disc valve, and the like. The valve V is schematically shown in the partial cross-sectional view of fig. 67. The housing 769 is optional and other direct connection valves may be used. The valve can then be manually reset to the working position by the user and the toilet can be returned to the primed state. Preferably, the valve may include a check valve that automatically opens and remains open when subjected to a positive pressure in the closed jet passage in excess of that in a normal flush cycle, thereby allowing air to enter the passage and disrupt perfusion. The check valve is then manually reset by the user to the working position and the toilet can be returned to the primed state. Most preferably, the check valve returns to the closed position after a delay of about 5 seconds to about 60 seconds without requiring manual intervention by the user. This can be done electromechanically or mechanically, for example, a flapper-type valve with a liquid damping hinge.

Fig. 58, 59 show an embodiment 870 identical to jet flush valve 770, embodiment 870 having like reference numerals as jet flush valve 770 for referring to the same components except that in flush valve 870 the star configuration of the support structure has 8 ribs and shown in valve 770 are 4 ribs. Those of ordinary skill in the art will appreciate that variations in the number of these ribs may be modified to provide varying degrees of structural support without unnecessarily impeding flow through the valve and to maximize and facilitate air venting.

Fig. 60-63 illustrate an embodiment of a flush valve 970 having a backflow prevention mechanism 974, the backflow prevention mechanism 974 having a compression linkage structure similar to the backflow prevention mechanism in valve 570, except that embodiment 970 does not have a single downward third connecting arm, but rather includes a bridge structure 9111 that increases in width as it extends downward. The bridging structure 9111 serves as a third attachment arm, but breaks up the resistance downward toward the hinged base 9108. Such hinged arms 9108 connect hinge mounts 9109 and work to provide cover 9102 with the ability to "peel" upward similar to

embodiments

770 and 870. The front portion of the backflow prevention mechanism 974 includes first and second hinged

connection arms

975, 976 similar to embodiment 570. The second connecting arm is connected to the top of the bridging structure 9111 by a standard hinged connection, and the bridging structure 9111 is connected to the rear of the hinged arm 9108 by a hinge structure 9112. The first connecting arm is connected to the front portion 9106 of the cover 9102 by a hinge base 993. A chain (not shown) may be attached at point P to move the front of the cover 9102 as described in embodiment 570, but unlike embodiment 570, the cover 9102 is similar to the cover 7102 in embodiment 710 and is flexible and can be peeled upward. As with embodiment 710, additional chains may also be used to hold the float of embodiment 710 to lift the back half of the cover 9102 at the location of a grommet 9113 or similar structure, as shown by chain C2 in embodiment 710. A grommet 9113 or similar structure may also be used to secure the float attachment, including a float assembly, tether, rope, cord, stainless steel cable, rigid rod or wire as shown in fig. 88-90.

Fig. 69 and 70 illustrate another embodiment of an injection valve assembly 1170 that is similar to injection

valve assembly embodiments

770, 870, and 970. This embodiment may also be used without a backflow prevention mechanism or may include a backflow prevention mechanism as shown in any of the

above embodiments

570, 670, 770, 870, 970, etc. As presented in embodiment 770, a solution to overcome the additional force required to open the irrigation spray valve is to provide a gradually opening valve, where one section of the valve "peels" apart to allow some water to enter the nozzle, thereby equalizing the pressure before the valve is fully opened. One or more valve assemblies, preferably at least the jet valve assembly 1170, have a valve cap 1173 and a valve body 1121 and are configured to be "peeled" apart. It should also be understood that multiple valve assemblies within a single tank, including a peripheral valve assembly, may have similar configurations. It should also be understood that although the valve assembly is described herein as being used with a siphonic toilet, the valve assembly may be used with any toilet, including a direct flush toilet.

Fig. 73-75 illustrate one such embodiment of a valve cover 1173 that is similar to the cover 7102 of embodiment 770 and preferably has a seal 11170 and a rigid cover 11180. Rigid cap 11180 is preferably capable of flexing seal 11170 to progressively open valve cap 1173. Rigid cover 11180 may have a peeling section 11182 and a lifting section 11183 that are preferably laterally spaced from one another. The peeling section 11182 preferably has at least one hinged base 11108 configured to connect with the lift section 11183. The configuration of the connection between the hinged base 11108 and the elevated section 11183 is preferably a rotatable connection. This configuration of the rotatable connection will be described in more detail below and is shown in fig. 73 and 74.

The rigid cover 11180 may operate similarly to the cover plate 7110 of embodiment 770 described above. Preferably, the trailing edge 11185 of the peeling section 11182 and the leading edge 11186 of the lifting section 11183 are substantially parallel to each other and also substantially perpendicular to the central longitudinal plane defined by VP and VP' of the valve cover 1173. There may be a lateral spacing TS between the trailing edge 11185 and the leading edge 11186. Distance d from trailing edge 11185 of stripped section 11182 to leading edge 11186 of lifted section 11183_TSPreferably between 10mm and 20mm, but the distance may depend on the size of the valve cap 1173. Any separation distance d is contemplated_TSAnd without spacing, the peeling section 11182 can be lifted a distance from the valve body 1121 without the lifting section 11183 moving and there is sufficient clearance to bend the seal 11170 without the sections interfering with the process.

Chain C1 may be used to connect the peeling section 11182 of rigid cover 11180 with the flush actuation rod 1175. When the flush actuation rod 1175 is lifted, the peeled section 11182 of the valve cap 1173 can be lifted from the valve body 1121. The peeling section 11182 may be associated with the lifting section 11183 by hinged arms 11108. The hinged arms 11108 are preferably non-movable at their connection to the peeling section 11182 and are configured to connect with the lifting section 11183 with a rotatable connection. The hinged arms 11108 may be integrally formed with the peeling section 11182 during the molding process and preferably have two stubs 11115 extending from the outer side of each hinged arm 11108. The stub 11115 is preferably cylindrical and is sized to be inserted into a slot 11116 in the hinged base 11109. Although two hinged arms 11108 are preferred and shown in the figures, it is understood that one or more hinged arms 11108 may be used. The resiliently deformable support member 11117 may be located between preferably two hinged arms 11108. The resiliently deformable support member 11117 is not necessary because the hinged arms 11108 can be sized and shaped to resiliently deform themselves.

The hinged arms 11108 are preferably connected to the lifting segments 11183 via hinged bases 11109 with a connection that can rotate about a straight line parallel to the leading edge 11186 of the lifting segments 11183. The hinged bases 11109 each preferably have a longitudinally extending slot 11116, which preferably has an oval shape, but it should be understood that any shape is possible, such as rectangular, circular, or hexagonal. The stub 11115 on the hinge arm 11108 can be inserted into the slot 11116 by the use of elastic deformation of the elastically deformable support member 11117. The oval shape allows the stub 11115 to move rotationally as well as longitudinally within their respective slots 11116. This movement allows the peeling section 11182 to interact optimally with the lifting section 11183. It should be understood that any rotatable connection may be used for the connection of the hinged arms 11108 to the lifting segments 11183 and that such longitudinal movement is not necessary. Possible rotatable connectors may include any articulated joint, such as a protrusion on one element that snaps into an opening on another element, or the use of a pin that is inserted into an opening located within each element. Other types of connections that can be about the same axis are also contemplated, including ball and socket joints.

As the peeling section 11182 continues to lift, the hinged arms 11108 preferably rotate about a connection with the hinged base 11109, allowing the peeling section 11182 to lift from the valve body 1121 without moving the lifting section 11183 for a short period of time. Once the peeling section 11182 has been lifted a sufficient degree by the chain C1 and the flush actuation rod 1175, the hinged base 11109 preferably acts on the lifting section 11183 to cause the lifting section 11183 of the rigid cover 11180 to open, thereby fully lifting the entire valve cover 1173 from the valve body 1121, and the float F can also be attached to the valve cover 1173 through the use of the chain C2, a float assembly 11270 described below, or other connection means. The float may provide buoyancy to reduce the force required to open the valve cap 1173 and/or control the closing time of the valve by a drop in the water level in the tank during a flush. The positioning of the float along the underside of the chain can cause subsequent closing of the valve and an increase in the flush volume.

An assembly kit 1100 having a first valve assembly, a second valve assembly, and a flush activation assembly without any additional tools and wherein the second valve assembly has a float attachment in the form of a float assembly 11270 is shown in fig. 88. The float assembly 11270 includes a float F and a second valve configured to couple the float to the second valveAssembly 1170 is connected to float connector 11280. A float attachment according to this variation may be used in place of chain C2 to connect the float to the second valve assembly. Fig. 89-90 show enlarged views of the second valve assembly 1170 including the float assembly 11270. Fig. 89 shows the valve cap 1173 in a closed position and fig. 90 shows the valve cap 1173 in an open position. The float connector 11280 can be a rigid or semi-rigid structure preferably made of a polymeric material. However, it should be understood that the float connector may be constructed of any material having a suitable density so as not to interfere with the action of the float F providing buoyancy to the valve cap 1173. Length l of float connector_FAMay be varied to adjust the rate at which the valve closure is fully opened. Length l_FAAnd may range from about 4cm to about 14 cm.

The float connector 11280 has a first end 11271 and a second end 11272. The float F is secured to the first end 11271 of the float connector 11280. The second end 11272 of the float connector is hingedly connected to the lift section 11183 of the second valve assembly 1170 through the use of a clamp 11273 that snaps onto a lift rod 11274 located on the lift section 11183 of the second valve assembly 1170. The clamp 11273 allows the float assembly 11270 to rotate about the longitudinal axis of the lifting rod 11274. The longitudinal axis of the stem should be parallel to the axis about which valve hinge 11275 rotates. It will be appreciated that any rotational connection, such as a pin, ball and socket joint or any other known rotational or hinged connection inserted through a hole in one or both elements, may be used to connect the float assembly with the lifting section of the valve assembly such that the rotational connection may rotate about an axis parallel to the axis about which the valve hinge 11275 rotates.

The first end 11271 of the float connector can include a snap ring 11276 for retaining the float F. The snap ring 11276 is resiliently deformable to an extent such that when the float is inserted into the opening, the force trying to return the snap ring to its rest position causes the float F to be securely held in place by friction. For use with standard floats, the snap ring is at its minimum height h_SCThe opening at (a) is preferably about 0cm to about 4cm high at rest and about 1cm to about 5cm high (the height of the float) when the float is inserted therein. Height h of maximum height of opening of snap ring_TCAt rest and at the float insertAll about 2cm to about 6cm when incorporated therein. The bottom of the snap ring may have a flat land 11277 shaped similar to the bottom of the float and the top 11278 of the snap ring may be curved such that the entire first end 11271 is shaped similar to a cotter pin. The resiliently deformable nature of the snap ring allows a variety of different floats to be used, so that the buoyancy of the bonnet is adjustable and also allows the float to be easily replaced if necessary.

Once the peeling section is lifted to the extent that the upward force increases on the lifting section, the float provides assistance so that less force is required to fully open the lifting section. The connection between the second end 11272 of the float assembly 11270 and the lifting section 11183 allows the float F to be held in an upright position by the opening of the valve cover when the valve is open. One or more stops 11279 may be located on either side of the clip 11273 such that when the water level drops below the level of the float F, the float assembly 11270 does not drop completely to the surface of the water. It will be understood by those skilled in the art based on this disclosure that stops are not required for the float to work properly, but they may prevent the float assembly from interfering with the action of other components of the valve assembly.

Although the second or jetting valve assembly is described as having a float attachment, it should be understood that the jetting valve assembly and/or the peripheral valve assembly can incorporate a float attachment, and that either or both valve assemblies can behave in a similar manner.

Fig. 76 and 77 illustrate an embodiment of the seal 11170 that may be used with a rigid cap to prevent liquid from undesirably entering the fill port and also move with the rigid cap 11180 to gradually open the valve cap 1173. Seal 11170 may have a sealing surface 11171 and a locking surface 11172. Locking surface 11172 may include a plurality of locking tabs 11173 that may help secure seal 11170 to rigid cover 11180, as shown in fig. 73-75. Seal 11170 is preferably positioned in facing engagement with stripping section 11182 and lifting section 11183. The seal is preferably attached to the rigid cover 11180 using a plurality of locking lugs 11173 or other securing means, either alone or in combination with an adhesive. Locking ledge 11173 may serve as an additional feature that helps prevent the force of the fluid flow from pulling seal 11170 away from rigid cover 11180. While the use of locking tabs 11173 may be preferred, it should be understood that the use of adhesives alone or other securing methods are also possible.

The locking tab 11173 may assist in the peeling aspect of the valve cap 1173. The arrangement of locking lugs 11173 across seal 11170 may allow one or more locking lugs 11173 to be located within stripping section 11182 and one or more locking lugs 11173 to be located within lifting section 11183, as will be described further below. As the peeling section 11182 is lifted, a force may be applied to seal 11170 in the opposite direction of movement, which pulls seal 11170 away from rigid cover 11180 and may allow it to keep the valve closed longer than desired. This delay may affect the timing between the opening of the peripheral valve and the opening of the injection valve and/or may inhibit the benefit of the stripping section opening before the lift section. The locking tab 11173 preferably supplies a reactive force to the liquid on the seal 11170, which should be sufficient to lift it from the valve body 1121 and maintain the proper time for opening of the valve.

A plurality of locking lugs 11173 may be disposed about locking surface 11172 and may be positioned to engage a plurality of corresponding openings 11188 in rigid cover 11180. For example, a preferred arrangement may include three rows of locking tabs 11173, wherein one or more locking tabs 11173 may be provided in each row. Preferably, first row 11174 may have at least one locking lug 11173 configured to connect with stripping section 11182, second row 11175 may have at least one locking lug 11173 configured to connect with the front of lifting section 11183, and third row 11176 may have at least one locking lug 11173 configured to connect with the rear of lifting section 11183. The attachment configuration of tabs 11173 is such that the size and shape of each tab 11173 allows it to be inserted through an opening with relative ease and more difficult to remove from the opening. The configuration of the connection between the locking lugs and the respective stripping and lifting sections may depend on the location and shape of the particular locking lug. Preferred specific features of this configuration will be discussed in more detail below.

The specific location of each locking lug depends on the size and/or shape of the valve cap 1173. Each row 11173-11176 may be located at a different distance from point CP on the leading edge of seal 11170 passing through valve cap 1173Points on the central vertical longitudinal planes VP and VP'. Preferably, for standard valve cover sizes, the first row 11174 may be located at a distance d of about 5mm to about 15mm from the point CP_1RHere, the second row 11175 may be located a distance d of about 40mm to about 60mm from the point CP_2RAnd the third row 11176 may be located a distance d of about 60mm to about 80mm from point CP_3RTo (3). This configuration should allow seal 11170 to be sufficiently secured to rigid cover 11180 and also allow peeling section 11182 and lifting section 11183 to open at different times.

Other configurations of the plurality of locking tabs 11173 are also contemplated. For example, only a single row of locking lugs may be used, with the row preferably being located about 5mm to about 30mm from point CP. This position allows the lugs to secure the seal to the rigid cover when the peeling section is lifted. The single row may also be located at a distance of about 30mm to about 90mm from point CP. The use of two rows of locking lugs is understood, with one row located about 5mm to about 30mm from point CP and the second row located about 35mm to about 90mm from point CP. In general, it is understood that one row is not used, or one or more rows located between about 5mm and about 30mm from point CP are used, and that one row is not used, or one or more rows located between about 35mm to about 90mm from point CP are used, in any combination. The location of the lugs may also depend on the size and/or shape of the valve cap 1173. Preferably, at least one row is located within stripping section 11182 and at least one row is located within lifting section 11183.

The preferred shape of each locking lug 11173 may include a head 11190 and a neck 11191. The head 11190 is preferably slightly larger than the neck 11191 so that the seal 11170 is positioned adjacent to the rigid cover 11180 when the head 11190 is inserted into the corresponding opening 11188 in the rigid cover 11180. The head 11190 preferably has a generally conical shape with a rounded top surface, and the neck 11191 preferably has a generally cylindrical shape. Although the shape of the locking lug 11173 has been described as having a generally circular cross-section taken parallel to the seal based on the preferred shape described above, it should be understood that the cross-section of the head 11190 and/or the neck 11191 can have any shape, such as oval, triangular, rectangular, etc. Other shapes having a circular cross-section are also understood, such as a spherical head.

Along a bottom surface 1119 spanning the head 111902 distance d measured by transverse line of cross section_THMay be greater than the distance d measured along a transverse line across the cross-section of the top surface 11193 of the neck 11191_TN. In addition, the perimeter of bottom surface 11192 of head 11190 is preferably greater than the perimeter of a corresponding opening 11188 in rigid cover 11180, such that head 11190 performs a locking function with respect to rigid cover 11180. The top surface 11193 of neck 11191 preferably has a perimeter that is smaller than the perimeter of opening 11188 in rigid cover 11180 such that it fits within opening 11188. Neck 11191 may also be made of a compressible material that deforms when inserted into opening 11188. In this case, the perimeter of top surface 11193 of neck 11191 may be greater than the perimeter of opening 11188 in rigid cover 11180. Furthermore, where a compressible material is used for the neck or the entire locking lug, the head and neck may be shaped as a single cylinder, or other shape having a uniform cross-section, as the deformation of the neck upon insertion into the opening may provide sufficient locking.

The preferred shape of the locking lugs 11173 in the first and

second rows

11174, 11175 may include a generally flat surface 11194 along the side facing the central vertical longitudinal plane VP-VP' of the valve cover 1173. The planar surface 11194 may extend along both the head 11190 and the neck 11191. The flat surface 11194 on the locking ledge 11173 is optional and may be used to aid in installation, but is not an essential element of the seal 11170.

The size of head 11190 and neck 11191 of each lug 11173 may be uniform, but one or more lugs 11173 may have one or more unique sizes. As shown in fig. 76 and 77, one or more of the lugs 11173 can have a larger head 11190 and/or a larger neck 11191 than the other locking lugs 11173. Preferably, locking tab 11173 in third row 11176 is larger than the other locking tabs 11173 and has a different shape than the other locking tabs 11173. For example, in fig. 76 and 77, the locking tab does not have a flat surface 11194 in common with the other locking tabs 11173. The different size and shape of the locking lugs in the third row may result in a more secure connection between the seal 11170 and the rigid cover 11180 due to their larger size and continuous contact with the open top. One or more of the locking tabs 11173 can have different shapes and all of the locking tabs 11173 can have unique sizes and/or shapes.

The method of locking seal 11170 to rigid cover 11180 preferably includes inserting each locking lug 11173 through its corresponding opening 11188 in rigid cover 11180. The head 11190 should be resiliently compressed as it is inserted through the opening 11188 so that it expands upon passing through the opening 11188 to provide its locking function. All of the locking lugs 11173 may be inserted into their respective openings 11188 at the same time, or one or more may be inserted into their respective openings 11188 at the same time. An adhesive may optionally be applied to the adjacent surfaces of the locking surface 11172 of seal 11170 and/or rigid cover 11180 prior to inserting locking tabs 11173 into their respective openings 11188. When seal 11170 is locked onto rigid cover 11180, head 11190 of locking lug 11173 may be located on the opposite side of rigid cover 11180 from locking surface 11172 and neck 11191 may be located within opening 11188 in rigid cover 11180 and may align and connect locking surface 11172 with head 11191. As shown for embodiment 770 in the figures, the use of locking lug 11173 with head 11190 and neck 11191 is not necessary and lug 11173 may only have neck 11191 for insertion into a corresponding opening 11188 in rigid cap 11180 for alignment purposes. The use of the seal 11170 attached to the rigid cover 11180 by adhesive alone without the use of any locking lugs is also contemplated.

Sealing surface 11171 is preferably made of any material known to seal valves that is sufficiently flexible to allow bending between dissection section 11182 and lifting section 11183 without lifting section 11183 until satisfactory. This material is preferably silicone, but may also comprise any other known polymer with adequate sealing properties, such as vinyl, rubber and other elastomers. Locking surface 11172 and locking lug 11173 are also preferably made of these materials, with the most preferred material for these elements being silicone. The entire seal 11170, including the sealing surface 11171, locking surface 11172, and locking ledge 11173, is preferably made of the same material, with all components being formed simultaneously using injection molding, compression molding, or three-dimensional printing. The material for one element may be different from the material for each of the other elements. Additionally, the elements may be formed separately from one or more of the included processes and then attached to each other to form the seal 11170.

Each of the elements of the embodiments listed herein are supplied separately as one or more nested components or installed in an assembled toilet. The assembly kit 1100 may be supplied for installation in a new toilet or for repair or replacement of components of an existing toilet. The assembly kit 1100 may include one or more elements and preferably includes a flush actuation assembly 11144 in accordance with the above-included embodiments and one or

more valve assemblies

1170 and 1180 also in accordance with the above-included embodiments.

Fig. 69 shows a kit of components 1100 according to a first embodiment. The assembly kit 1100 preferably includes a rim valve assembly 1180, a jet valve assembly 1170, a flush actuation assembly 11144, and a tank-to-bowl gasket kit 11241 (see fig. 83 and 84). Rim valve assembly 1180 may include a rim valve body 1131, an overflow tube 1191, and a rim valve cover 1182. The peripheral valve cover 1182 may have a chain C with a float F attached to the chain C for connecting the peripheral valve cover 1182 with the flush actuation rod 1175. It is also understood that the jet valve assembly may not have an overflow tube, or the overflow tube may be permanently sealed. The jet valve assembly 1170 can have a jet valve body 1121, an optional removable cap 11201 over the overflow tube 1191, and a jet valve cap 1173. The injection valve cap 1173 preferably has a first chain C1 and a second chain C2, the first chain C1 connecting the peeling section 11182 with the flush actuation lever 1175 and the second chain C2 can attach the float F to the lifting section 11183. Flush actuation assembly 11144 may include an adjustable flush connector 11150, a flush actuation rod 1175, and a pivoting rod P. The components of the flush activation assembly 11144 may be assembled and interact with one another in accordance with the flush activation assembly embodiment 11144 described above. The component kit 1100 is shown in greater detail in fig. 82. In this figure, the component kit 1100 is shown without the pivot rod P. As shown in fig. 82, the rim valve assembly 1180 and the jet valve assembly 1170 preferably have a valve-to-tank gasket 11252 to prevent liquid from leaking from the interior of the tank to around the valve.

Fig. 83 illustrates a second embodiment of a component kit 11250. Second assembly set 11250 may differ from first assembly set 1100 in that

valve assemblies

1180 and 1170 are provided. According to the above embodiments, the second assembly set 11250 may include multiple

flush valve assemblies

11205 or 11206. Multiple flush valve assembly 11205 may have a first valve assembly 1170 and a second valve assembly 1180. The first valve assembly may have a first valve cap 1182 and a first junction 11210. The second valve assembly may have a second valve cover 1173 and a second junction 11220. The first and

second junctions

11210, 11220 may interlock to associate the first valve assembly 1170 with the second valve assembly 1180. The second embodiment of the assembly set 11250 can also include a flush activation assembly 11144 as shown in fig. 69.

The tank-to-bowl gasket kit 11241 may be a separate kit as shown in fig. 84, or it may be provided within one of the

larger assembly kits

1100 and 11250. As shown in fig. 83, the second assembly set 11250 may also include a tank-to-bowl pad set 11241, thereby forming a larger tank assembly set 11251. The tank-to-bowl gasket set 11241 may include a tank-to-bowl gasket 11242, a retaining nut 11243, and a sealing gasket 11244. Additionally, special/special wrench tools 11245 may be included for attaching components to the tank as they may be formed in standard or non-standard sizes. The wrench tool 11245 preferably has only an open end 11246 for surrounding the retaining nut 11243 and an extension arm 11247 for grasping and providing leverage to secure the nut 11243 to a threaded surface 11248 that may be located at the bottom of the

valve body

1121 or 1131. The tank-to-bowl gasket 11242 and valve and tank gasket 11252 are preferably molded from a thermoplastic elastomer, such as SEBS material for good sealing and chemical stability. The retaining nut 11243 and the sealing washer 11244 are preferably formed of acetal.

It is contemplated that the first embodiment of the assembly set 1100 and/or the second embodiment of the assembly set 11250 can include two or more of the items described above in the preferred embodiments, in any combination with or without the tank-to-urinal pad set 11241. Additionally, the

assembly kit

1100 or 11250 can include additional elements, such as a flush actuator, which can include a handle H and a pivot rod P. It should also be understood that the pivot rod P may also be excluded from the assembly set 1100 and/or 11250, as it may be provided with a handle in a separate flush handle assembly set, as in other assemblies in the art.

Yet another toilet embodiment is provided that includes embodiments of the flush actuation assembly 11144 itself, as described above, or in conjunction with one or

more valve assemblies

1170 or 1180 according to one of the above embodiments. In particular, the toilet may be similar to the toilet of any of the

embodiments

10, 110, 210, 310, 410, 1010, etc. discussed herein and the toilet may be as shown in fig. 1 or 16. One embodiment of the toilet preferably has a toilet that includes a first valve assembly 1180, a second valve assembly 1170, and a flush actuation assembly 11144. Flush actuation assembly 11144 may include a flush actuation rod 1175, a pivoting rod P, and an adjustable flush connector 11150 as described above. Additionally, first valve assembly 1180 may be a rim valve assembly and second valve assembly 1170 may be a jet valve assembly. Further, the flush valve assembly comprising the toilet may be a multiple flush valve assembly 11205, wherein the first valve assembly 1180 interlocks with the second valve assembly 1170 with the first and

second junctions

11210 and 11220, respectively. As described above, the first linking portion 11210 may have a downward hook portion and the second linking portion 11220 may have a corresponding upward protrusion. However, those skilled in the art will appreciate, based on the present disclosure, that any connection between the first valve body 1131 and the second valve body 1121 is contemplated such that the first valve body 1131 and the second valve body 1121 are maintained in alignment with one another through the use of the coupling device 11200, including the first and second valve assemblies being integrally formed.

It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. It is understood, therefore, that this invention is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A valve assembly for a toilet bowl includes

A valve body including a coupling for associating the valve body with a second valve body of a second valve assembly; and

and a valve cover.

2. The valve assembly of claim 1, wherein the toilet bowl is a siphonic toilet bowl.

3. The valve assembly of claim 1, further comprising an overflow tube connected to the valve body and configured to allow liquid to enter the valve body when the valve cover is closed.

4. The valve assembly of claim 1, the valve cap comprising a flush valve body, wherein the valve cap is located above the valve body, the valve cap comprising

A seal member; and

a rigid cover configured to enable bending of the seal to progressively open the valve cover.

5. The valve assembly of claim 4, wherein the seal comprises a sealing surface and a locking surface, wherein the locking surface comprises a plurality of locking lugs positioned on the locking surface to engage a plurality of corresponding openings in the rigid cover.

6. A multi-flush valve assembly comprising

A first valve assembly including a first valve body and a first bonnet, the first valve body including a first junction; and

a second valve assembly including a second valve body and a second valve cap, the second valve body including a second joint;

wherein the first and second valve assemblies are configured to associate with each other by interlocking the first and second joints.

7. The multi-flush valve assembly of claim 6, wherein the first link has a downward hook portion and the second link has an upward protrusion configured to interlock with the downward hook portion to maintain alignment of the first valve assembly with the second valve assembly.

8. A toilet bowl includes

A toilet bowl;

a flush actuation assembly; and

multiple flush valve assembly including a first valve assembly including

A first valve body including a first coupling portion, and a first valve cover; and

a second valve assembly comprising a second valve body and a second valve cover, the second valve body comprising a second junction, wherein the first valve assembly and the second valve assembly are configured to associate with each other by interlocking the first junction and the second junction.

9. The toilet of claim 8, wherein the toilet bowl is a siphonic toilet.

10. The toilet of claim 8, wherein the first link has a downward hook and the second link has an upward protrusion configured to interlock with the downward hook to maintain alignment of the first and second valve assemblies.

11. A kit of parts for use in a toilet, comprising

A flush actuation assembly; and

a multi-flush valve assembly is provided,

wherein the multi-flush valve assembly comprises a first valve assembly comprising a first valve body comprising a first junction and a first bonnet; and

a second valve assembly including a second valve body and a second valve cap, the second valve body including a second joint,

wherein the first valve assembly and the second valve assembly are associated with each other by interlocking the first connecting portion and the second connecting portion.

12. The kit of components of claim 11, further comprising a tank-to-bowl gasket tool, wherein the dual flush valve assembly comprises a first tank-to-bowl gasket and a second tank-to-bowl gasket, the first and second tank-to-bowl gaskets comprising rims and the tank-to-bowl gasket tool configured to fit the rims of the tank-to-bowl gaskets and can be used as a wrench to attach the tank-to-bowl gasket to a toilet bowl.