CA2098030A1 - Variable toilet flushing apparatus - Google Patents
Variable toilet flushing apparatusInfo
- Publication number
- CA2098030A1 CA2098030A1 CA 2098030 CA2098030A CA2098030A1 CA 2098030 A1 CA2098030 A1 CA 2098030A1 CA 2098030 CA2098030 CA 2098030 CA 2098030 A CA2098030 A CA 2098030A CA 2098030 A1 CA2098030 A1 CA 2098030A1
- Authority
- CA
- Canada
- Prior art keywords
- tank
- valve
- handle
- water
- drain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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- Sanitary Device For Flush Toilet (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Toilet flushing apparatus to provide either a partial or full flush. A drain extending down to the toilet bowl has an upper and a lower inlet located at different levels in the water holding tank. Upper and lower valves seated in the inlets are operable to release water from the toilet tank into the drain. The lower valve can be opened to provide a full flush, but when only the upper valve is opened a smaller quantity of water is released to provide a partial flush to conserve water.
Toilet flushing apparatus to provide either a partial or full flush. A drain extending down to the toilet bowl has an upper and a lower inlet located at different levels in the water holding tank. Upper and lower valves seated in the inlets are operable to release water from the toilet tank into the drain. The lower valve can be opened to provide a full flush, but when only the upper valve is opened a smaller quantity of water is released to provide a partial flush to conserve water.
Description
2~9~030 VARIABLE TOILET FLUSHING APPARATUS
BACKGROUND OF THE INVENTION
This invention relates to flushing apparatus for toilets, and in particular to apparatus which can be operated to provide partial flushes using a predetermined or selected volume of water.
5It is well known to conserve water by using toilet dual flushing apparatus which provides a full flush to eliminate solid wastes, but only a partial or mini flush to eliminate liquid wastes. Water flows from an upper holding tank through a drain to the lower toilet bowl. In 10previous flushing apparatus the drain has a single inlet with a main valve and partial flushing is provided by limiting the opening of the main valve. Examples of this are shown in U.S. patent number 4,837,867 to Miller which issued June 13, 1989, and the applicant's Canadian patent 15application serial number 2,042,621-7 filed May 15, 1991 entitled "Dual Flush System for Toilets."
Most of the previous dual flush systems or apparatus for providing partial or mini flushes have the disadvantage that it is difficult and costly to mount them on existing toilets. Also difficulties have been encountered in accurately controlling the opening of the single main valve to release different quantities of water into the toilet bowl.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the invention to at least partially overcome the disadvantages of the prior art by providing variable toilet flushing apparatus having separate valves at different levels in the water holding tank which facilitate operation to provide full and partial flushes.
To this end, in one of its aspects, the invention provides variable toilet flushing apparatus having an upper water holding tank with a drain extending down to a lower toilet bowl, and flush control means mounted on the tank, having the improvement comprising the drain having an upper and lower inlet, the upper inlet located at an upper level in the tank, and the lower inlet located at a lower level in the tank, the upper inlet having a first valve operative to release water from above the upper level in the tank 20~8~30 into the drain, the lower inlet having a second valve operative to release water from above the lower level in the tank into the drain, and the first and second valves being operatively connected to the flush control means, whereby the flush control means is operable to release a selected quantity of water from the tank into the drain to the toilet bowl.
Further objects and advantages of the invention will appear from the following description, taken together with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Yigure 1 is a cutaway view of a toilet tank showing flushing apparatus according to a first preferred embodiment of the invention with the upper valve in the open position, Figure 2 is a similar view showing the same apparatus with both valves in the open position, Figure 3 is a similar view showing a second preferred embodiment of the invention, and Figure 4 is a similar view showing a third preferred embodiment of the invention.
DETAILED DESCRIPTION OF THE INVENTION
Reference is first made to Figures 1 and 2 which 209803~ ~
show toilet flushing apparatus according to a preferred embodiment of the invention. As is well known, flushing occurs when water from an upper holding tank 10 is released to flow down through a drain 12 to a lower toilet bowl (not shown). Conventional apparatus with a float which is used to refill the water holding tank 10 to a preset full water level 14 has been omitted from the drawings for clarity.
An overflow pipe 16 extends from the drain 12 above the full water level 14.
The flushing apparatus according to the invention includes the drain 12 having an upper inlet 18 located at an upper level 20 in the tank 10 and a lower inlet 22 located at a lower level 24 in the tank 10. In a new toilet this drain 10 extends down directly to the toilet bowl, but it may easily be mounted as shown with a rubber seal 26 in the drain pipe 28 of an existing toilet. The drain 10 has an upper valve 30 mounted on a bracket 32 to pivot between a raised open position and a closed position where it is seated in the upper inlet 18. This upper valve 30 is buoyant such that after it is initially raised or pivoted upwards a small distance to overcome the water pressure and suction of the water flowing between it and the upper inlet 18, it will float in the open position until sufficient water is released through the drain 10 to lower the water to the upper level 20. After the valve 30 floats down and i5 seated in the upper inlet 18, it is retained in this closed position initially by gravity and then also by water pressure after it is again covered by inflowing water. The drain 10 also has a lower valve 34 mounted on a bracket 36 to pivot between the open position shown and a closed position where it is seated in the lower inlet 22. This lower valve 34 is also buoyant to float to the open position after it is initially pivoted a small distance. After sufficient water flows through the drain 12 to lower the water to the lower level 20 the lower valve 34 hangs down vertically from the bracket 36. As water again flows in to refill the holding tank 10, it further pivots the lower valve 34 to seat against the lower inlet 22 which, in this embodiment, extends at an angle of a few degrees past vertical.
As can be seen, in this embodiment of the invention, the flushing apparatus also includes a single handle mechanism 38 which is pivotally mounted on the toilet tank 10. The handle mechanism 38 has a lever 40 extending into the tank 10 connected to pivot with a handle 42 extending out of the tank. In this embodiment, an elongated rocker bar 44 is pivotally connected to the lever 40. The rocker bar 44 has one end 46 connected by a first flexible chain or cord 48 to the upper valve 30, and the other end 50 connected by a second flexible chain or cord 2a~s~
52 to the lower valve 34. In other embodiments, other suitable fle~ible connectors can be used to connect the upper and lower valves 30, 34 to the lever 40.
In use, after the wa,ter holding tank 10 has filled with water to the full level 14 the user presses the handle 42 down to the position shown in Figure 1 for a partial or mini flush. This pivots the lever 40 and lifts the rocker bar 44 upwards. The greater water pressure keeps the lower valve 34 closed, so the rocker bar 44 rotates counterclockwise and the first chain 48 lifts the upper valve 30. As described above, the upper valve 30 is buoyant and it then floats to the open position seen in Figure 1. Water from the tank 10 is then released into the drain 12 to the toilet bowl to provide a partial flush.
When the level of the water in the tank 10 has dropped to the upper level 20 of the upper inlet 18 to the drain 12, the upper valve 30 floats down to its closed position seated in the upper inlet 18. The quantity of water released to provide this partial flush is predetermined by the dimensions of the toilet tank 10 and by the difference between the full level 14 of the incoming water in the tank and the upper level 20 at which the upper inlet 18 is located.
In order to produce a full flush, the handle 42 is depressed further to the position shown in Figure 2.
2~98~30 This first opens the upper valve 30 as described above, and then produces a sufficient force in the second chain 52 to overcome the greater water pressure on the lower valve 34 to open it as well. Even though the handle 42 is released and the handle mechanism 38 returns to its original position, the buoyant upper and lower valves 30, 34 remain floating in their open positions. Water from the toilet tank 10 flows into the drain 12 until the water level drops to the lower level 24 and provides a full flush. ~he quantity of water released to provide this full flush is similarly predetermined by the dimensions of the toilet tank 10 and the difference between the full level 14 of the incoming water in the tank and the lower level 24 at which the lower inlet 22 is located. As the water level in the tank drops during flushing, first the upper valve 30 floats closed and then the lower valve 34 floats to the vertical position from which it closes when water is again introduced to refill the tank 10. Of course, the drain 10 can have a different configuration of upper and lower inlets and valves, and other suitable mechanisms can be provided to open them. For instance, a handle or other device can be mounted on the top of the tank and lifted or pushed rather than rotated to control operation of the valves.
Reference is now made to Figure 3 to describe a 209~030 second preferred embodiment of the invention. As many of the elements of this embodiment are the same as those of the first embodiment described above, elements common to both embodiments are described 3nd illustrated using the same reference numerals. In this embodiment, a first handle mechanism 54 is pivotally mounted on the upper right of the toilet tank 10, and a second handle mechanism 56 is pivotally mounted on the upper left of the tank 10. The first handle mechanism 54 includes a handle 58 extending out of the tank 10 and a lever 60 extending into the tank 10 which is connected by a first flexible chain or cord 62 to the upper valve 30. The second handle mechanism 56 similarly includes a handle 64 extending out of the tank 10 and a lever 66 extending into the tank 10 which is connected by a second flexible chain or cord 68 to the lower valve 34. In use, only one of the upper and lower valves 30, 34 is opened at a time. If only a partial flush is required, then the right handle 58 is pressed which lifts the upper valve 30 to open it. Water from the tank 10 flows into the drain 12 until the water level drops to the upper level 20 of the upper inlet 18 and the upper valve 30 closes. In this embodiment, the quantity of water released for a partial flush is adjustable. The upper inlet 18 to the drain 12 is formed by a sleeve 70 which extends into the drain 12. An 0-ring 72 is seated between 209g~30 them to prevent leakage, and a set screw 74 extends through the drain 12 to hold the sleeve 70 in position. Thus, the upper level 20 at which the upper inlet 18 to the drain 12 is located is adjustable by moving the sleeve 70. If the sleeve 70 is raised less water is released for a partial flush, and if it is lowered more water is released for a partial flush. If a full flush is required, then the left handle 64 is pressed which lifts the lower valve 34 to open it. Water flows into the drain 12 until the water level in the toilet tank 10 drops to the lower level 24 of the lower inlet 22. As described above, when this happens the buoyant lower valve 34 hangs vertically down from the bracket 36, and when water flows in it further pivots the lower valve 34 to seat it in the closed position in the lower inlet 22. In other embodiments, the upper and lower inlets 18, 22 to the drain 12 can extend at other angles and the upper and lower valves 30, 34 can have other appropriate mechanism to control their operation.
Reference is now made to Figure 4 to describe another preferred embodiment of the invention. This embodiment is the same as the embodiment in Figure 3 except that the upper valve 30 does not have a float and thus is not buoyant, and the flexible chain 62 has been replaced by a rigid rod 76. Thus, the amount and duration of the opening of the upper valve 30 is controlled directly by the 209~30 right handle 58. When the handle 58 is pressed down the valve 30 opens, and when it is released the valve 30 closes. This allows the operator to release only a portion of the water above the upper level 20 in the tank to provide a smaller partial flush. The quantity of water selected can be different each time depending on the requirements.
While the description of the toilet flushing apparatus has been given with respect to preferred embodiments, it will be evident that various modifications are possible without departing from the scope of the invention as understood by those skilled in the art and as defined in the following claims.
BACKGROUND OF THE INVENTION
This invention relates to flushing apparatus for toilets, and in particular to apparatus which can be operated to provide partial flushes using a predetermined or selected volume of water.
5It is well known to conserve water by using toilet dual flushing apparatus which provides a full flush to eliminate solid wastes, but only a partial or mini flush to eliminate liquid wastes. Water flows from an upper holding tank through a drain to the lower toilet bowl. In 10previous flushing apparatus the drain has a single inlet with a main valve and partial flushing is provided by limiting the opening of the main valve. Examples of this are shown in U.S. patent number 4,837,867 to Miller which issued June 13, 1989, and the applicant's Canadian patent 15application serial number 2,042,621-7 filed May 15, 1991 entitled "Dual Flush System for Toilets."
Most of the previous dual flush systems or apparatus for providing partial or mini flushes have the disadvantage that it is difficult and costly to mount them on existing toilets. Also difficulties have been encountered in accurately controlling the opening of the single main valve to release different quantities of water into the toilet bowl.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the invention to at least partially overcome the disadvantages of the prior art by providing variable toilet flushing apparatus having separate valves at different levels in the water holding tank which facilitate operation to provide full and partial flushes.
To this end, in one of its aspects, the invention provides variable toilet flushing apparatus having an upper water holding tank with a drain extending down to a lower toilet bowl, and flush control means mounted on the tank, having the improvement comprising the drain having an upper and lower inlet, the upper inlet located at an upper level in the tank, and the lower inlet located at a lower level in the tank, the upper inlet having a first valve operative to release water from above the upper level in the tank 20~8~30 into the drain, the lower inlet having a second valve operative to release water from above the lower level in the tank into the drain, and the first and second valves being operatively connected to the flush control means, whereby the flush control means is operable to release a selected quantity of water from the tank into the drain to the toilet bowl.
Further objects and advantages of the invention will appear from the following description, taken together with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Yigure 1 is a cutaway view of a toilet tank showing flushing apparatus according to a first preferred embodiment of the invention with the upper valve in the open position, Figure 2 is a similar view showing the same apparatus with both valves in the open position, Figure 3 is a similar view showing a second preferred embodiment of the invention, and Figure 4 is a similar view showing a third preferred embodiment of the invention.
DETAILED DESCRIPTION OF THE INVENTION
Reference is first made to Figures 1 and 2 which 209803~ ~
show toilet flushing apparatus according to a preferred embodiment of the invention. As is well known, flushing occurs when water from an upper holding tank 10 is released to flow down through a drain 12 to a lower toilet bowl (not shown). Conventional apparatus with a float which is used to refill the water holding tank 10 to a preset full water level 14 has been omitted from the drawings for clarity.
An overflow pipe 16 extends from the drain 12 above the full water level 14.
The flushing apparatus according to the invention includes the drain 12 having an upper inlet 18 located at an upper level 20 in the tank 10 and a lower inlet 22 located at a lower level 24 in the tank 10. In a new toilet this drain 10 extends down directly to the toilet bowl, but it may easily be mounted as shown with a rubber seal 26 in the drain pipe 28 of an existing toilet. The drain 10 has an upper valve 30 mounted on a bracket 32 to pivot between a raised open position and a closed position where it is seated in the upper inlet 18. This upper valve 30 is buoyant such that after it is initially raised or pivoted upwards a small distance to overcome the water pressure and suction of the water flowing between it and the upper inlet 18, it will float in the open position until sufficient water is released through the drain 10 to lower the water to the upper level 20. After the valve 30 floats down and i5 seated in the upper inlet 18, it is retained in this closed position initially by gravity and then also by water pressure after it is again covered by inflowing water. The drain 10 also has a lower valve 34 mounted on a bracket 36 to pivot between the open position shown and a closed position where it is seated in the lower inlet 22. This lower valve 34 is also buoyant to float to the open position after it is initially pivoted a small distance. After sufficient water flows through the drain 12 to lower the water to the lower level 20 the lower valve 34 hangs down vertically from the bracket 36. As water again flows in to refill the holding tank 10, it further pivots the lower valve 34 to seat against the lower inlet 22 which, in this embodiment, extends at an angle of a few degrees past vertical.
As can be seen, in this embodiment of the invention, the flushing apparatus also includes a single handle mechanism 38 which is pivotally mounted on the toilet tank 10. The handle mechanism 38 has a lever 40 extending into the tank 10 connected to pivot with a handle 42 extending out of the tank. In this embodiment, an elongated rocker bar 44 is pivotally connected to the lever 40. The rocker bar 44 has one end 46 connected by a first flexible chain or cord 48 to the upper valve 30, and the other end 50 connected by a second flexible chain or cord 2a~s~
52 to the lower valve 34. In other embodiments, other suitable fle~ible connectors can be used to connect the upper and lower valves 30, 34 to the lever 40.
In use, after the wa,ter holding tank 10 has filled with water to the full level 14 the user presses the handle 42 down to the position shown in Figure 1 for a partial or mini flush. This pivots the lever 40 and lifts the rocker bar 44 upwards. The greater water pressure keeps the lower valve 34 closed, so the rocker bar 44 rotates counterclockwise and the first chain 48 lifts the upper valve 30. As described above, the upper valve 30 is buoyant and it then floats to the open position seen in Figure 1. Water from the tank 10 is then released into the drain 12 to the toilet bowl to provide a partial flush.
When the level of the water in the tank 10 has dropped to the upper level 20 of the upper inlet 18 to the drain 12, the upper valve 30 floats down to its closed position seated in the upper inlet 18. The quantity of water released to provide this partial flush is predetermined by the dimensions of the toilet tank 10 and by the difference between the full level 14 of the incoming water in the tank and the upper level 20 at which the upper inlet 18 is located.
In order to produce a full flush, the handle 42 is depressed further to the position shown in Figure 2.
2~98~30 This first opens the upper valve 30 as described above, and then produces a sufficient force in the second chain 52 to overcome the greater water pressure on the lower valve 34 to open it as well. Even though the handle 42 is released and the handle mechanism 38 returns to its original position, the buoyant upper and lower valves 30, 34 remain floating in their open positions. Water from the toilet tank 10 flows into the drain 12 until the water level drops to the lower level 24 and provides a full flush. ~he quantity of water released to provide this full flush is similarly predetermined by the dimensions of the toilet tank 10 and the difference between the full level 14 of the incoming water in the tank and the lower level 24 at which the lower inlet 22 is located. As the water level in the tank drops during flushing, first the upper valve 30 floats closed and then the lower valve 34 floats to the vertical position from which it closes when water is again introduced to refill the tank 10. Of course, the drain 10 can have a different configuration of upper and lower inlets and valves, and other suitable mechanisms can be provided to open them. For instance, a handle or other device can be mounted on the top of the tank and lifted or pushed rather than rotated to control operation of the valves.
Reference is now made to Figure 3 to describe a 209~030 second preferred embodiment of the invention. As many of the elements of this embodiment are the same as those of the first embodiment described above, elements common to both embodiments are described 3nd illustrated using the same reference numerals. In this embodiment, a first handle mechanism 54 is pivotally mounted on the upper right of the toilet tank 10, and a second handle mechanism 56 is pivotally mounted on the upper left of the tank 10. The first handle mechanism 54 includes a handle 58 extending out of the tank 10 and a lever 60 extending into the tank 10 which is connected by a first flexible chain or cord 62 to the upper valve 30. The second handle mechanism 56 similarly includes a handle 64 extending out of the tank 10 and a lever 66 extending into the tank 10 which is connected by a second flexible chain or cord 68 to the lower valve 34. In use, only one of the upper and lower valves 30, 34 is opened at a time. If only a partial flush is required, then the right handle 58 is pressed which lifts the upper valve 30 to open it. Water from the tank 10 flows into the drain 12 until the water level drops to the upper level 20 of the upper inlet 18 and the upper valve 30 closes. In this embodiment, the quantity of water released for a partial flush is adjustable. The upper inlet 18 to the drain 12 is formed by a sleeve 70 which extends into the drain 12. An 0-ring 72 is seated between 209g~30 them to prevent leakage, and a set screw 74 extends through the drain 12 to hold the sleeve 70 in position. Thus, the upper level 20 at which the upper inlet 18 to the drain 12 is located is adjustable by moving the sleeve 70. If the sleeve 70 is raised less water is released for a partial flush, and if it is lowered more water is released for a partial flush. If a full flush is required, then the left handle 64 is pressed which lifts the lower valve 34 to open it. Water flows into the drain 12 until the water level in the toilet tank 10 drops to the lower level 24 of the lower inlet 22. As described above, when this happens the buoyant lower valve 34 hangs vertically down from the bracket 36, and when water flows in it further pivots the lower valve 34 to seat it in the closed position in the lower inlet 22. In other embodiments, the upper and lower inlets 18, 22 to the drain 12 can extend at other angles and the upper and lower valves 30, 34 can have other appropriate mechanism to control their operation.
Reference is now made to Figure 4 to describe another preferred embodiment of the invention. This embodiment is the same as the embodiment in Figure 3 except that the upper valve 30 does not have a float and thus is not buoyant, and the flexible chain 62 has been replaced by a rigid rod 76. Thus, the amount and duration of the opening of the upper valve 30 is controlled directly by the 209~30 right handle 58. When the handle 58 is pressed down the valve 30 opens, and when it is released the valve 30 closes. This allows the operator to release only a portion of the water above the upper level 20 in the tank to provide a smaller partial flush. The quantity of water selected can be different each time depending on the requirements.
While the description of the toilet flushing apparatus has been given with respect to preferred embodiments, it will be evident that various modifications are possible without departing from the scope of the invention as understood by those skilled in the art and as defined in the following claims.
Claims (11)
1. In variable toilet flushing apparatus having an upper water holding tank with a drain extending down to a lower toilet bowl, and flush control means mounted on the tank, the improvement comprising;
(a) the drain having an upper and lower inlet, the upper inlet located at an upper level in the tank, and the lower inlet located at a lower level in the tank, (b) the upper inlet having a first valve operative to release water from above the upper level in the tank into the drain, the lower inlet having a second valve operative to release water from above the lower level in the tank into the drain, and (c) the first and second valves being operatively connected to the flush control means, whereby the flush control means is operable to release a selected quantity of water from the tank into the drain to the toilet bowl.
(a) the drain having an upper and lower inlet, the upper inlet located at an upper level in the tank, and the lower inlet located at a lower level in the tank, (b) the upper inlet having a first valve operative to release water from above the upper level in the tank into the drain, the lower inlet having a second valve operative to release water from above the lower level in the tank into the drain, and (c) the first and second valves being operatively connected to the flush control means, whereby the flush control means is operable to release a selected quantity of water from the tank into the drain to the toilet bowl.
2. Toilet flushing apparatus as claimed in claim 1 wherein the second valve is buoyant to remain in an open position after being initially opened to provide a full flush and then float to a closed position when the water in the tank drains below the lower level.
3. Toilet flushing apparatus as claimed in claim 2 wherein the first valve is buoyant to remain in an open position after being initially opened to provide a partial flush and then float to a closed position when the water in the tank drains below the upper level.
4. Toilet flushing apparatus as claimed in claim 3 wherein the flush control means comprises a first handle mechanism pivotally mounted on the tank, the first handle mechanism having a lever extending in the tank and a handle extending out of the tank, the first and second valves being connected to the lever by flexible connector means, whereby movement of the handle to a first predetermined position opens the first valve and movement of the handle to a second predetermined position opens the second valve.
5. Toilet flushing apparatus as claimed in claim 4 wherein movement of the handle to the second position opens both the first and second valves.
6. Toilet flushing apparatus as claimed in claim 5 wherein the flexible connector means includes an elongated rocker bar and first and second cords, the rocker bar having first and second ends and being pivotally connected therebetween to the lever of the first handle mechanism, the first cord extending to connect the first end of the rocker bar to the first valve, and the second cord extending to connect the second end of the rocker bar to the second valve.
7. Toilet flushing apparatus as claimed in claim 3 wherein the flush control means comprises first and second handle mechanisms mounted on the tank, the first handle mechanism being connected to the first valve by flexible connector means whereby operation of the first handle mechanism opens the first valve, and the second handle mechanism being connected to the second valve by flexible connector means whereby operation of the second handle mechanism opens the second valve.
8. Toilet flushing apparatus as claimed in claim 7 wherein the first and second handle mechanisms are pivotally mounted on the tank, the first handle mechanism having a first lever extending in the tank and a first handle extending out of the tank, the first lever being connected to the first valve by a first cord, and the second handle mechanism having a second lever extending in the tank and a second handle extending out of the tank, the second lever being connected to the second valve by a second cord.
9. Toilet flushing apparatus as claimed in claim 3 wherein the upper level at which the upper inlet to the drain is located is adjustable to release a predetermined quantity of water for a partial flush.
10. Toilet flushing apparatus as claimed in claim 2 wherein the flush control means comprises first and second handle mechanisms mounted on the tank, the first handle mechanism being connected to the first valve by rigid connector means whereby the first handle mechanism is operable to control opening of the first valve to release only a selected portion of the water from above the upper level in the tank into the drain to provide a partial flush, the second handle mechanism being connected to the second valve by flexible connector means whereby operation of the second handle mechanism opens the second valve.
11. Toilet flushing apparatus as claimed in claim 10 wherein the first and second handle mechanisms are pivotally mounted on the tank, the first handle mechanism having a first lever extending in the tank and a first handle extending out of the tank, the first lever being connected to the first valve by a rigid rod, the second handle mechanism having a second lever extending in the tank and a second handle extending out of the tank, the second lever being connected to the second valve by a cord.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90122092A | 1992-06-19 | 1992-06-19 | |
| US07/901,220 | 1992-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2098030A1 true CA2098030A1 (en) | 1993-12-20 |
Family
ID=25413773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2098030 Abandoned CA2098030A1 (en) | 1992-06-19 | 1993-06-09 | Variable toilet flushing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2098030A1 (en) |
-
1993
- 1993-06-09 CA CA 2098030 patent/CA2098030A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |