US20080216225A1 - Pump assembly for a flush toilet with mode selector - Google Patents
Pump assembly for a flush toilet with mode selector Download PDFInfo
- Publication number
- US20080216225A1 US20080216225A1 US12/043,608 US4360808A US2008216225A1 US 20080216225 A1 US20080216225 A1 US 20080216225A1 US 4360808 A US4360808 A US 4360808A US 2008216225 A1 US2008216225 A1 US 2008216225A1
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- US
- United States
- Prior art keywords
- pump assembly
- pump
- fluid
- bowl
- waste
- 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
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/01—Special constructions of flushing devices, e.g. closed flushing system using flushing pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/06—Mobile combinations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/14—Pumps characterised by muscle-power operation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/85978—With pump
- Y10T137/85986—Pumped fluid control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the present teachings generally relate to flush toilets. More particularly, the present teachings relate to a pump assembly having a mode selector. In one application, the pump assembly is operative to deliver a source of flush water to a toilet.
- Pump operated flush toilets are known in the pertinent art.
- Thetford Corporation of Ann Arbor, Mich. manufactures and sells a pump operated flush toilet under the mark HEADMATE®.
- HEADMATE® While known pump operated flush toilets, including the HEADMATE®, have proven acceptable for their intended applications, there remains a need for continuous improvement in the pertinent art.
- the present teachings provide a mode selector for a pump assembly.
- the pump assembly includes a first conduit defining a fluid inlet and a second conduit defining a fluid outlet.
- the first conduit is associated with a first one-way valve and the second conduit is associated with a second one-way valve.
- the mode selector includes a first portion and a second portion. The first portion is moveable between a first position and a second position. In the first position, a fluid path extending through the first and second conduits is open and in the second position the first portion closes the fluid path.
- the second portion is operative to maintain one of the one-way valves in an open condition when the first portion is moved to the second position so as to avoid the creation of a vacuum.
- the present teachings provide a toilet system including a toilet having a bowl and a base.
- the base includes a hopper for receiving waste from the bowl.
- the system further includes a pump assembly for delivering a source of flush water to the bowl and for pumping waste from the hopper.
- the pump assembly is operative in a first mode to deliver flush water to the bowl and pump waste from the hopper in response to pump actuation.
- the pump assembly is further operative in a second mode to pump waste from the hopper in response to pump actuation without delivering flush water to the bowl.
- the pump assembly including a first valve in fluid communication with the bowl and a second valve in fluid communication with a source of flush water.
- the pump assembly further includes a mode selector disposed in the pump housing.
- the mode selector includes a first portion and a second portion. The first portion blocks one of the first and second valves in the second mode. The second portion extends through the other of the first and second valves in the second mode to avoid a vacuum in the pump
- the present teachings provide a toilet system including toilet flexibly coupled to a pump assembly.
- the toilet system includes a toilet having a bowl and a base.
- the bowl receives a source of flush water.
- the base defines a hopper for receiving waste from the bowl.
- the pump assembly is operative for pumping flush water to the bowl and for pumping waste from the hopper.
- a first flexible conduit connects the pump assembly and the bowl.
- a second flexible conduit connects the pump assembly and the hopper.
- the pump assembly is flexibly interconnected to the bowl and the base such that the pump assembly is mountable in various positions relative to the base.
- the present teachings provide a valve assembly including a mounting portion, a valve seat and a valve body.
- the mounting portion may include a first end and a second. The first and second ends may be both selectively mounted to a conduit defining a fluid path.
- the valve seat may be interconnected to the mounting portion.
- the valve body may be interconnected to at least one of the mounting portion and the valve seat for movement relative to the valve seat between a seated position and a closed position.
- the valve body may include a first side and a second side. The valve body may be operative to seal against back flow from the first side and open to positive pressures on the second side.
- the valve assembly may be selectively used to control flow in either of two opposing directions.
- FIG. 1 is a perspective view of a pump operated flush toilet with a flexible waste arm in accordance with the present teachings.
- FIG. 2 is another perspective view of a pump operated flush toilet with a flexible waste arm in accordance with the present teachings.
- FIG. 3 is another perspective view of a pump operated flush toilet with a flexible waste arm in accordance with the present teachings.
- FIG. 4 is an exploded view of the pump operated flush toilet in accordance with the present teachings.
- FIG. 5 is a cross-sectional view taken through the pump assembly at the flush water inlet and outlet ports and illustrating a flush mode selector for the pump assembly in accordance with the present teachings, the flush mode selector shown in an open position.
- FIG. 6 is a cross-sectional view similar to FIG. 5 , illustrating the flush mode selector in a closed position and incorporating alternate valve assemblies.
- FIG. 7 is an enlarged cross-sectional view of one of the one-way valves of FIG. 5 shown removed from the pump assembly.
- FIG. 8 is an enlarged cross-sectional view of one of the one-way valves of FIG. 6 shown removed from the pump assembly.
- a pump assembly in accordance with the present teachings is illustrated and generally identified at reference character 10 .
- the pump assembly 10 is shown operatively associated with a toilet 12 .
- the particular toilet 12 shown in the drawings is exemplary.
- the pump assembly 10 of the present teachings may be used with other toilets 12 within the scope of the present teachings.
- the toilet 12 will be understood to be of conventional construction and operation.
- the toilet 12 may generally include a bowl 14 and a base 16 .
- the bowl 14 may be constructed of china.
- the base 16 may be constructed of plastic.
- the bowl and base 14 and 16 may be suitable secured to one other.
- the bowl and base 14 and 16 may be constructed of any other suitable materials known in the art.
- the bowl and base 14 and 16 may be unitarily formed of a common material.
- a seat and cover 18 and 20 may be conventionally mounted to the bowl 14 .
- the bowl 14 conventionally includes a nozzle for delivering a source of flush water.
- the base 16 may define a hopper 21 .
- the hopper 21 may receive waste from the bowl 14 prior to transfer to a holding tank or sewer.
- the pump assembly 10 may be a positive displacement pump and may include a pump body 22 .
- the pump body 22 may be connected at an upper end to a pump cap 24 and at a lower end to a pump base 26 .
- the base 26 may define a plurality of holes for receiving mounting fasteners.
- the base 26 may further define an input port 30 and an outlet port 32 .
- the pump cap 24 may define an opening 34 for slidably receiving a pump rod 36 .
- the pump rod 36 may be coupled to a pump handle 38 .
- the pump cap 24 may further define a first conduit or flush water inlet port 40 and a second conduit or flush water outlet port 42 .
- the pump assembly 10 may be selectively operated in a plurality of modes.
- the pump assembly 10 may be operated in a first mode in which a source of flush water is delivered to the bowl 14 of the toilet 12 and in which waste is pumped from the hopper 21 to a holding tank or sewer.
- the pump assembly 10 may be further operated in a second mode in which waste is pumped from a hopper 21 of the toilet 12 to the holding tank or sewer but flush water is not delivered to the bowl 14 .
- the pump assembly 10 may include a mode selector lever 44 or other manual or electronic device for toggling between the first and second modes in a manner discussed below.
- the pump assembly 10 may be coupled to the remainder of the waste transfer system in a flexible manner.
- a first flexible hose 50 may interconnect the flush water source and the inlet port 40 .
- a second flexible hose 52 may connect the outlet port 42 and the nozzle of the toilet 12 .
- a third flexible hose 54 may connect the outlet port 32 and the holding tank or sewer.
- a fourth flexible hose 56 may connect the inlet port 30 and the hopper 21 .
- the present teachings allow for a wide variety of mounting choices for a pump assembly of a flush toilet. As such, a single toilet and single pump assembly may be utilized in a greater number of applications where space for mounting is limited or otherwise confined. Additionally, the present teachings provide for a non-directional design. In this regard, the present teachings may be configured as a right or left handed unit. Moreover, the present teachings use less material than conventional molded plastic waste arms, thereby reducing manufacturing costs and additional parts.
- the mode selector is illustrated and generally identified at reference character 110 .
- the mode selector 110 is operative in a manner to be further discussed below to control the pump assembly 10 to operate in the first mode or the second mode in response to movement of the mode selector lever 44 or other device.
- the flush water inlet port 40 and the flush water outlet port 42 may be associated with one-way valve assemblies 100 .
- the one-way valve assemblies 100 may be of any suitable type operative to seal against back flow of fluid from the first side 102 and open to positive pressure on a second side 104 .
- the particular valve assemblies 100 shown in the drawings offer certain advantages, however, and will be described further below. Briefly, a first type of one-way valve assembly 100 A is shown associated with the pump assembly 10 in FIG. 5 and in the cross-sectional view of FIG. 7 . A second type of one-way valve assembly 100 B is shown associated with the pump assembly 10 in FIG. 6 and in the cross-sectional view of FIG. 8 .
- the mode selector 110 may include a first member or first portion 112 for closing the fluid path that extends through the inlet and outlet ports 40 and 42 .
- the mode selector 110 may further include a second portion or second member 114 for maintaining one of the one-way valves 100 in an open condition so as to avoid the creation of a vacuum within the system.
- the first portion 112 may be moveable between a first or open position and a second or closed position. The open position is shown in FIG. 5 , for example. The closed position is shown in FIG. 6 , for example.
- the first portion 112 may be rotatable about an axis between the first and second positions. The axis may be defined by the pump rod 36 .
- the first portion 112 may carry or integrally define a seal portion 116 .
- the seal portion 116 may be sized and positioned to seal one of the inlet and outlet ports 40 and 42 when the first portion 112 is rotated to the closed position. As shown in the drawings, the seal portion 116 may seal the inlet port 40 . Alternatively, the seal portion 116 may seal the outlet port 42 .
- the second portion 114 may include a flexible member 118 .
- the flexible member 118 may be in the form of a line, tether or similar structure.
- the flexible member 118 may be attached to or integrally formed with the first portion 112 .
- the flexible member 118 may have a length sufficient to extend through one of the valves 100 when the first portion 112 is rotated to the closed position. As illustrated, the flexible member 118 may at least partially extend through the valve 100 associated with the outlet port 42 when the first portion 112 seals the inlet port 40 .
- the first portion 112 is rotated to its corresponding open position. Fluid is now permitted to flow along the fluid path extending between the inlet port and the outlet port 40 and 42 and flush water is delivered to the bowl during pumping of the pump assembly 10 .
- fluid enters the inlet port 40 and exits the outlet port 42 in response to bi-directional motion of the pump rod 36 .
- Further operation of the pump assembly 10 will be understood to be conventional insofar as the present teachings are concerned.
- the end of the flexible portion 118 does not extend through either of the valves 100 and the valves 100 are both permitted to normally function to allow one-way flow.
- the flush mode selector 110 is shown in FIG. 6 in the closed mode.
- the first portion 112 is rotated to its closed position and fluid is prevented from flowing along the fluid path extending between the inlet port 40 and the outlet port 42 .
- the end of the flexible portion 118 extends at least partially through the valve 100 associated with the outlet port 42 . In this manner, the flush water inlet port 40 of the pump assembly 10 is held shut and the outlet port 42 is held open, thus not allowing material to enter or exit the system, but at the same time not creating a vacuum within the system.
- valve assemblies 100 constructed according to the teachings of the present disclosure will be further described.
- the valve assemblies 100 are particularly adapted for use in the pump assembly 10 .
- the teachings of the present disclosure are not limited to the exemplary applications shown in the drawings.
- the valve assemblies 100 have applicability to other fluid transfer arrangements.
- the term fluid will be understood to include liquid, gas and/or slurry type material, such as but not limited to sewage transferred from a toilet to a holding tank or sewer.
- the valve assembly 100 A may generally include a mounting portion 120 , a seating portion or valve seat 122 and a valve body 124 .
- the mounting portion 120 may be generally cylindrical.
- the mounting portion 120 may be of any suitable geometry for mating with a conduit through which flow control is desired.
- the mounting portion 120 may include a first end 126 and a second end 128 .
- the first and second ends 126 and 128 may be generally identical to one another.
- the first and second ends 126 and 128 may both be selectively mounted to the inlet port 40 and the outlet port 42 depending upon the direction in which flow control is desired.
- the first and second ends 126 and 128 may be formed to include retention features 130 .
- the retention features 130 may be in the form of inwardly extending ribs 130 .
- the ribs 130 may engage corresponding grooves 132 defined by the inlet port 40 and the outlet port 42 .
- the ends 126 and 128 may be secured to the conduits 116 and 118 through a friction fit or any other manner well known in the art.
- the first end 126 of one of the valve assemblies 100 A is attached to the inlet port 40 to allow flow in a first direction 134 .
- the second end 128 of another of the valve assemblies 100 A is attached to the outlet port 42 to allow flow in a second direction 136 .
- the valve seat 122 is interconnected to the mounting portion 120 . As shown in the cross-section view of FIG. 7 , the valve seat 122 may simply define an inwardly extending circumferential flange against which the valve body 124 may seat.
- the valve seat 122 may include an axially extending portion 140 and an inwardly extending radial flange 142 . These elements 140 and 142 may extend directly from the mounting portion 120 or be connected to the mounting portion 120 through a flange 144 .
- the valve body 124 may be interconnected to at least one of the mounting portion 120 and the valve seat 122 for movement relative to the valve seat between a seated position and a closed position.
- the valve body 124 may include a first side 148 and a second side 150 .
- the valve body 124 is operative to seal against back flow from the first side 148 and open to positive pressures on the second side 150 .
- the valve assembly 100 may be unitarily constructed. In certain applications, the valve assembly 100 may be constructed of rubber. Other suitable materials may be employed within the scope of the present teachings.
- valve assembly 100 B is shown to share various features in common with the valve assembly 100 A. As such, like reference characters are used to identify similar elements throughout the drawings.
- the valve assembly may be a duck-bill type valve assembly 200 .
- the valve body 124 of the valve assembly 200 may be directly coupled to the mounting portion 120 without a seat portion 122 .
- Other features of the valve assembly 200 may be identical to corresponding features described above with respect to valve assembly 100 .
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Sanitary Device For Flush Toilet (AREA)
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Abstract
Description
- This application claims priority to U.S. Provisional Patent Application Nos. 60/893,256 (filed 6 Mar. 2007); 60/893,259 (filed 6 Mar. 2007); and 60/893,288 (filed 6 Mar. 2007), which applications are herein expressly incorporated by reference.
- The present teachings generally relate to flush toilets. More particularly, the present teachings relate to a pump assembly having a mode selector. In one application, the pump assembly is operative to deliver a source of flush water to a toilet.
- The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
- Pump operated flush toilets are known in the pertinent art. For example, Thetford Corporation of Ann Arbor, Mich. manufactures and sells a pump operated flush toilet under the mark HEADMATE®. While known pump operated flush toilets, including the HEADMATE®, have proven acceptable for their intended applications, there remains a need for continuous improvement in the pertinent art.
- According to one particular aspect, the present teachings provide a mode selector for a pump assembly. The pump assembly includes a first conduit defining a fluid inlet and a second conduit defining a fluid outlet. The first conduit is associated with a first one-way valve and the second conduit is associated with a second one-way valve. The mode selector includes a first portion and a second portion. The first portion is moveable between a first position and a second position. In the first position, a fluid path extending through the first and second conduits is open and in the second position the first portion closes the fluid path. The second portion is operative to maintain one of the one-way valves in an open condition when the first portion is moved to the second position so as to avoid the creation of a vacuum.
- According to another particular aspect, the present teachings provide a toilet system including a toilet having a bowl and a base. The base includes a hopper for receiving waste from the bowl. The system further includes a pump assembly for delivering a source of flush water to the bowl and for pumping waste from the hopper. The pump assembly is operative in a first mode to deliver flush water to the bowl and pump waste from the hopper in response to pump actuation. The pump assembly is further operative in a second mode to pump waste from the hopper in response to pump actuation without delivering flush water to the bowl. The pump assembly including a first valve in fluid communication with the bowl and a second valve in fluid communication with a source of flush water. The pump assembly further includes a mode selector disposed in the pump housing. The mode selector includes a first portion and a second portion. The first portion blocks one of the first and second valves in the second mode. The second portion extends through the other of the first and second valves in the second mode to avoid a vacuum in the pump assembly.
- According to another particular aspect, the present teachings provide a toilet system including toilet flexibly coupled to a pump assembly. The toilet system includes a toilet having a bowl and a base. The bowl receives a source of flush water. The base defines a hopper for receiving waste from the bowl. The pump assembly is operative for pumping flush water to the bowl and for pumping waste from the hopper. A first flexible conduit connects the pump assembly and the bowl. A second flexible conduit connects the pump assembly and the hopper. The pump assembly is flexibly interconnected to the bowl and the base such that the pump assembly is mountable in various positions relative to the base.
- According to yet another particular aspect, the present teachings provide a valve assembly including a mounting portion, a valve seat and a valve body. The mounting portion may include a first end and a second. The first and second ends may be both selectively mounted to a conduit defining a fluid path. The valve seat may be interconnected to the mounting portion. The valve body may be interconnected to at least one of the mounting portion and the valve seat for movement relative to the valve seat between a seated position and a closed position. The valve body may include a first side and a second side. The valve body may be operative to seal against back flow from the first side and open to positive pressures on the second side. The valve assembly may be selectively used to control flow in either of two opposing directions.
- Further areas of applicability of the present teachings will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
- The present teachings will become more fully understood from the detailed description and the accompanying drawings, wherein:
-
FIG. 1 is a perspective view of a pump operated flush toilet with a flexible waste arm in accordance with the present teachings. -
FIG. 2 is another perspective view of a pump operated flush toilet with a flexible waste arm in accordance with the present teachings. -
FIG. 3 is another perspective view of a pump operated flush toilet with a flexible waste arm in accordance with the present teachings. -
FIG. 4 is an exploded view of the pump operated flush toilet in accordance with the present teachings. -
FIG. 5 is a cross-sectional view taken through the pump assembly at the flush water inlet and outlet ports and illustrating a flush mode selector for the pump assembly in accordance with the present teachings, the flush mode selector shown in an open position. -
FIG. 6 is a cross-sectional view similar toFIG. 5 , illustrating the flush mode selector in a closed position and incorporating alternate valve assemblies. -
FIG. 7 is an enlarged cross-sectional view of one of the one-way valves ofFIG. 5 shown removed from the pump assembly. -
FIG. 8 is an enlarged cross-sectional view of one of the one-way valves ofFIG. 6 shown removed from the pump assembly. - The following description of various aspects of the present teachings is merely exemplary in nature and is in no way intended to limit the invention, its application or uses.
- With general reference to
FIGS. 1 though 4 of the drawings, a pump assembly in accordance with the present teachings is illustrated and generally identified atreference character 10. Thepump assembly 10 is shown operatively associated with atoilet 12. It will be understood that theparticular toilet 12 shown in the drawings is exemplary. In this regard, thepump assembly 10 of the present teachings may be used withother toilets 12 within the scope of the present teachings. Insofar as the present teachings are concerned, thetoilet 12 will be understood to be of conventional construction and operation. - Before addressing the details of the
pump assembly 10, a brief understanding of the cooperating features of thetoilet 12 is warranted. Thetoilet 12 may generally include abowl 14 and abase 16. Thebowl 14 may be constructed of china. The base 16 may be constructed of plastic. The bowl andbase base base bowl 14. - While not illustrated, it will be understood that the
bowl 14 conventionally includes a nozzle for delivering a source of flush water. The base 16 may define ahopper 21. Thehopper 21 may receive waste from thebowl 14 prior to transfer to a holding tank or sewer. - The
pump assembly 10 may be a positive displacement pump and may include apump body 22. Thepump body 22 may be connected at an upper end to apump cap 24 and at a lower end to apump base 26. The base 26 may define a plurality of holes for receiving mounting fasteners. The base 26 may further define aninput port 30 and anoutlet port 32. Thepump cap 24 may define an opening 34 for slidably receiving apump rod 36. Thepump rod 36 may be coupled to apump handle 38. Thepump cap 24 may further define a first conduit or flushwater inlet port 40 and a second conduit or flushwater outlet port 42. - The
pump assembly 10 may be selectively operated in a plurality of modes. For example, thepump assembly 10 may be operated in a first mode in which a source of flush water is delivered to thebowl 14 of thetoilet 12 and in which waste is pumped from thehopper 21 to a holding tank or sewer. Thepump assembly 10 may be further operated in a second mode in which waste is pumped from ahopper 21 of thetoilet 12 to the holding tank or sewer but flush water is not delivered to thebowl 14. Thepump assembly 10 may include amode selector lever 44 or other manual or electronic device for toggling between the first and second modes in a manner discussed below. - The
pump assembly 10 may be coupled to the remainder of the waste transfer system in a flexible manner. In this regard, a firstflexible hose 50 may interconnect the flush water source and theinlet port 40. A secondflexible hose 52 may connect theoutlet port 42 and the nozzle of thetoilet 12. A thirdflexible hose 54 may connect theoutlet port 32 and the holding tank or sewer. A fourthflexible hose 56 may connect theinlet port 30 and thehopper 21. - The present teachings allow for a wide variety of mounting choices for a pump assembly of a flush toilet. As such, a single toilet and single pump assembly may be utilized in a greater number of applications where space for mounting is limited or otherwise confined. Additionally, the present teachings provide for a non-directional design. In this regard, the present teachings may be configured as a right or left handed unit. Moreover, the present teachings use less material than conventional molded plastic waste arms, thereby reducing manufacturing costs and additional parts.
- With continued reference to
FIGS. 1-4 and additional reference toFIGS. 5 and 6 , a mode selector constructed according to the teachings of the present disclosure will be described. The mode selector is illustrated and generally identified atreference character 110. Themode selector 110 is operative in a manner to be further discussed below to control thepump assembly 10 to operate in the first mode or the second mode in response to movement of themode selector lever 44 or other device. - The flush
water inlet port 40 and the flushwater outlet port 42 may be associated with one-way valve assemblies 100. Insofar as themode selector 110 is concerned, the one-way valve assemblies 100 may be of any suitable type operative to seal against back flow of fluid from thefirst side 102 and open to positive pressure on a second side 104. The particular valve assemblies 100 shown in the drawings offer certain advantages, however, and will be described further below. Briefly, a first type of one-way valve assembly 100A is shown associated with thepump assembly 10 inFIG. 5 and in the cross-sectional view ofFIG. 7 . A second type of one-way valve assembly 100B is shown associated with thepump assembly 10 inFIG. 6 and in the cross-sectional view ofFIG. 8 . - The
mode selector 110 may include a first member orfirst portion 112 for closing the fluid path that extends through the inlet andoutlet ports mode selector 110 may further include a second portion orsecond member 114 for maintaining one of the one-way valves 100 in an open condition so as to avoid the creation of a vacuum within the system. Thefirst portion 112 may be moveable between a first or open position and a second or closed position. The open position is shown inFIG. 5 , for example. The closed position is shown inFIG. 6 , for example. Thefirst portion 112 may be rotatable about an axis between the first and second positions. The axis may be defined by thepump rod 36. - The
first portion 112 may carry or integrally define aseal portion 116. Theseal portion 116 may be sized and positioned to seal one of the inlet andoutlet ports first portion 112 is rotated to the closed position. As shown in the drawings, theseal portion 116 may seal theinlet port 40. Alternatively, theseal portion 116 may seal theoutlet port 42. - The
second portion 114 may include aflexible member 118. Theflexible member 118 may be in the form of a line, tether or similar structure. Theflexible member 118 may be attached to or integrally formed with thefirst portion 112. Theflexible member 118 may have a length sufficient to extend through one of the valves 100 when thefirst portion 112 is rotated to the closed position. As illustrated, theflexible member 118 may at least partially extend through the valve 100 associated with theoutlet port 42 when thefirst portion 112 seals theinlet port 40. - With particular reference to
FIG. 5 in which theflush mode selector 110 is shown in the open mode, thefirst portion 112 is rotated to its corresponding open position. Fluid is now permitted to flow along the fluid path extending between the inlet port and theoutlet port pump assembly 10. In this regard, fluid enters theinlet port 40 and exits theoutlet port 42 in response to bi-directional motion of thepump rod 36. Further operation of thepump assembly 10 will be understood to be conventional insofar as the present teachings are concerned. The end of theflexible portion 118 does not extend through either of the valves 100 and the valves 100 are both permitted to normally function to allow one-way flow. - The
flush mode selector 110 is shown inFIG. 6 in the closed mode. In this mode, thefirst portion 112 is rotated to its closed position and fluid is prevented from flowing along the fluid path extending between theinlet port 40 and theoutlet port 42. The end of theflexible portion 118 extends at least partially through the valve 100 associated with theoutlet port 42. In this manner, the flushwater inlet port 40 of thepump assembly 10 is held shut and theoutlet port 42 is held open, thus not allowing material to enter or exit the system, but at the same time not creating a vacuum within the system. - With additional reference to the cross-sectional views of
FIGS. 7 and 8 of the drawings, the valve assemblies 100 constructed according to the teachings of the present disclosure will be further described. The valve assemblies 100 are particularly adapted for use in thepump assembly 10. Those skilled in the art, however, will appreciate that the teachings of the present disclosure are not limited to the exemplary applications shown in the drawings. In this regard, the valve assemblies 100 have applicability to other fluid transfer arrangements. As used herein, the term fluid will be understood to include liquid, gas and/or slurry type material, such as but not limited to sewage transferred from a toilet to a holding tank or sewer. - As particularly shown in the cross-sectional view of
FIG. 7 , thevalve assembly 100A may generally include a mountingportion 120, a seating portion orvalve seat 122 and avalve body 124. The mountingportion 120 may be generally cylindrical. Alternatively, the mountingportion 120 may be of any suitable geometry for mating with a conduit through which flow control is desired. - The mounting
portion 120 may include afirst end 126 and asecond end 128. The first and second ends 126 and 128 may be generally identical to one another. The first and second ends 126 and 128 may both be selectively mounted to theinlet port 40 and theoutlet port 42 depending upon the direction in which flow control is desired. - The first and second ends 126 and 128 may be formed to include retention features 130. The retention features 130 may be in the form of inwardly extending
ribs 130. Theribs 130 may engage correspondinggrooves 132 defined by theinlet port 40 and theoutlet port 42. Alternatively, theends conduits FIG. 5 , thefirst end 126 of one of thevalve assemblies 100A is attached to theinlet port 40 to allow flow in afirst direction 134. Thesecond end 128 of another of thevalve assemblies 100A is attached to theoutlet port 42 to allow flow in asecond direction 136. - The
valve seat 122 is interconnected to the mountingportion 120. As shown in the cross-section view ofFIG. 7 , thevalve seat 122 may simply define an inwardly extending circumferential flange against which thevalve body 124 may seat. Thevalve seat 122 may include anaxially extending portion 140 and an inwardly extendingradial flange 142. Theseelements portion 120 or be connected to the mountingportion 120 through aflange 144. - The
valve body 124 may be interconnected to at least one of the mountingportion 120 and thevalve seat 122 for movement relative to the valve seat between a seated position and a closed position. Thevalve body 124 may include afirst side 148 and asecond side 150. Thevalve body 124 is operative to seal against back flow from thefirst side 148 and open to positive pressures on thesecond side 150. - The valve assembly 100 may be unitarily constructed. In certain applications, the valve assembly 100 may be constructed of rubber. Other suitable materials may be employed within the scope of the present teachings.
- With particular reference to
FIGS. 6 and 8 , thevalve assembly 100B is shown to share various features in common with thevalve assembly 100A. As such, like reference characters are used to identify similar elements throughout the drawings. The valve assembly may be a duck-bill type valve assembly 200. As such, thevalve body 124 of the valve assembly 200 may be directly coupled to the mountingportion 120 without aseat portion 122. Other features of the valve assembly 200 may be identical to corresponding features described above with respect to valve assembly 100. - While one or more specific examples have been described in the specification and illustrated in the drawings, it will be understood by those skilled in the art that various changes may be made and equivalence may be substituted for elements thereof without departing from the scope of the present teachings as defined in the claims. Furthermore, the mixing and matching of features, elements and/or functions between various examples may be expressly contemplated herein so that one skilled in the art would appreciate from the present teachings that features, elements and/or functions of one example may be incorporated into another example as appropriate, unless described otherwise above. Moreover, many modifications may be made to adapt a particular situation or material to the present teachings without departing from the essential scope thereof. Therefore, it may be intended that the present teachings not be limited to the particular examples illustrated by the drawings and described in the specification as the best mode of presently contemplated for carrying out the present teachings but that the scope of the present disclosure will include any embodiments following within the foregoing description and the appended claims.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/043,608 US20080216225A1 (en) | 2007-03-06 | 2008-03-06 | Pump assembly for a flush toilet with mode selector |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89325907P | 2007-03-06 | 2007-03-06 | |
US89328807P | 2007-03-06 | 2007-03-06 | |
US89325607P | 2007-03-06 | 2007-03-06 | |
US12/043,608 US20080216225A1 (en) | 2007-03-06 | 2008-03-06 | Pump assembly for a flush toilet with mode selector |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080216225A1 true US20080216225A1 (en) | 2008-09-11 |
Family
ID=39651604
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/043,608 Abandoned US20080216225A1 (en) | 2007-03-06 | 2008-03-06 | Pump assembly for a flush toilet with mode selector |
US12/043,531 Expired - Fee Related US8167587B2 (en) | 2007-03-06 | 2008-03-06 | Pump assembly with reversible one-way valves |
US12/043,565 Expired - Fee Related US7996929B2 (en) | 2007-03-06 | 2008-03-06 | Flush toilet |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/043,531 Expired - Fee Related US8167587B2 (en) | 2007-03-06 | 2008-03-06 | Pump assembly with reversible one-way valves |
US12/043,565 Expired - Fee Related US7996929B2 (en) | 2007-03-06 | 2008-03-06 | Flush toilet |
Country Status (2)
Country | Link |
---|---|
US (3) | US20080216225A1 (en) |
EP (1) | EP1972728A3 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070234470A1 (en) * | 2005-12-20 | 2007-10-11 | Sawalski Michael M | Toilet bowl cleaning and/or deodorizing device |
EP2357289A1 (en) | 2010-02-16 | 2011-08-17 | Almos Technologies Pty Ltd | Pump assembly for a marine toilet and toilet pump connection system |
WO2011101309A1 (en) | 2010-02-16 | 2011-08-25 | Almos Technologies Pty. Ltd. | Pump assembly for a marine toilet and toilet pump connection system |
EP2378013A1 (en) | 2010-04-13 | 2011-10-19 | Almos Technologies Pty Ltd | Pump assembly for a marine toilet |
WO2019032579A1 (en) * | 2017-08-07 | 2019-02-14 | Fluidmaster Inc. | Fluid control system and method |
US11319700B2 (en) * | 2019-03-02 | 2022-05-03 | Ryan M. Fritzsche | Lubrication system for marine or RV toilet |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1972728A3 (en) * | 2007-03-06 | 2012-10-03 | Thetford Corporation | Flush toilet |
US8529223B2 (en) * | 2007-10-09 | 2013-09-10 | Thetford Corporation | Dual diaphragm pump assembly for a sanitation system |
DE102012102632B4 (en) * | 2012-03-27 | 2015-05-28 | Aqua Vital Int. Ltd. & Co. KG | suction |
US9556602B2 (en) * | 2013-04-12 | 2017-01-31 | Robert Claunch | Self-contained oil flush toilet unit and sewage treatment system for separating and pre-treating waste |
US9404247B2 (en) | 2014-02-12 | 2016-08-02 | Raritan Engineering Company, Inc. | Manual toilet flushing apparatus with an odor reducing fresh water inlet valve assembly |
US9782317B2 (en) | 2014-11-28 | 2017-10-10 | Mary Madeline Mount | Head support device |
CN106013362B (en) * | 2015-03-24 | 2018-07-27 | Toto株式会社 | Flush toilet |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070234470A1 (en) * | 2005-12-20 | 2007-10-11 | Sawalski Michael M | Toilet bowl cleaning and/or deodorizing device |
US8099800B2 (en) * | 2005-12-20 | 2012-01-24 | S.C. Johnson & Son, Inc. | Toilet bowl cleaning and/or deodorizing device |
EP2357289A1 (en) | 2010-02-16 | 2011-08-17 | Almos Technologies Pty Ltd | Pump assembly for a marine toilet and toilet pump connection system |
WO2011101309A1 (en) | 2010-02-16 | 2011-08-25 | Almos Technologies Pty. Ltd. | Pump assembly for a marine toilet and toilet pump connection system |
EP2378013A1 (en) | 2010-04-13 | 2011-10-19 | Almos Technologies Pty Ltd | Pump assembly for a marine toilet |
WO2019032579A1 (en) * | 2017-08-07 | 2019-02-14 | Fluidmaster Inc. | Fluid control system and method |
US10899598B2 (en) | 2017-08-07 | 2021-01-26 | Fluidmaster, Inc. | Fluid control system and method |
US11939206B2 (en) | 2017-08-07 | 2024-03-26 | Fluidmaster, Inc. | Fluid control system and method |
US11319700B2 (en) * | 2019-03-02 | 2022-05-03 | Ryan M. Fritzsche | Lubrication system for marine or RV toilet |
Also Published As
Publication number | Publication date |
---|---|
US8167587B2 (en) | 2012-05-01 |
EP1972728A3 (en) | 2012-10-03 |
US7996929B2 (en) | 2011-08-16 |
US20080216905A1 (en) | 2008-09-11 |
US20080216224A1 (en) | 2008-09-11 |
EP1972728A2 (en) | 2008-09-24 |
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