US20040172745A1 - Backflow preventing attachment for toilets - Google Patents
Backflow preventing attachment for toilets Download PDFInfo
- Publication number
- US20040172745A1 US20040172745A1 US10/789,991 US78999104A US2004172745A1 US 20040172745 A1 US20040172745 A1 US 20040172745A1 US 78999104 A US78999104 A US 78999104A US 2004172745 A1 US2004172745 A1 US 2004172745A1
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- US
- United States
- Prior art keywords
- toilet bowl
- slits
- toilet
- soil pipe
- backflow preventing
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
Definitions
- This invention relates to the art of backflow valves for toilets and specifically deals with a backflow duckbill valve attachment depending from a gasket ring into the uppermost portion of a soil pipe wherein the gasket ring when used is sandwiched between standard toilet bowls and said soil pipe without a need to raise the height of the toilet bowl.
- the conventional toilet bowl has a wax ring or wax gasket interposed between the upwardly facing flange of a soil pipe and the downwardly facing opening of the horn of a toilet bowl and is sandwiched therebetween to form a good seal.
- the wax ring or wax gasket is fitted with a downwardly extending tubular skirt which extends for a small distance into the soil pipe thereby improving the sealing characteristics of the ring or gasket.
- Such skirts are seen in such prior art U.S. Pat. No. 3,224,614 to Pietrzak; U.S. Pat. No. 3,311,391 to Harrell; U.S. Pat. No. 3,349,412 to Shwartz et al U.S. Pat. No.
- a gasket or ring having the conventional configuration and size of a wax ring long used in sealing the bowl of a toilet bowl to the upwardly facing flange of a soil pipe.
- the said ring or gasket is not fabricated of a wax but rather in a plastic, preferably of a thermoplastic such as polyethylene or polypropylene.
- the ring or gasket has a tubular skirt depending therefrom. The skirt is a diameter whereby it extends for a distance into the soil pipe.
- the skirt terminates in a duckbill valve detailed to open upon the release of water from the toilet reservoir or the pressure of water from another source occurring upon flushing. The weight of water opens the duckbill valve permitting the flow therethrough.
- the duckbill valve closes upon the cessation of a flushing and concomitant cessation of water flow.
- the valve closes under the aegis of its own elasticity as the duckbill valve is constructed of rubber or the like.
- the self closing of the duckbill valve prevents backflow into the toilet bowl of foam or bubbles that may have accumulated in the soil pipe a comment occurrence in tall apartment houses having a plurality of dish washers and/or laundry washers which all discharge into soil pipes that flow downwardly through numerous floors.
- the bubbles and foam produced from the suds of the said washers, being light have a tendency to hang up in the soil pipe rather than immediately flowing out through the sewer to the street.
- the many serpentine soil pipes result in convoluted flow providing hang ups for the accumulation of bubbles and foam. In many instances the thusly accumulated bubbles have a tendency to move up the horn of the toilet bowl to make their presence known in the toilet bowl water.
- the present invention -provides a salutary solution to the problem of bubbles or foam emerging out of the toilet bowl water.
- FIG. 1 is a perspective showing the device of the present invention shown explosively between a flange bearing soil pipe and the bottom of a toilet bowl.
- FIG. 2 is a perspective of the device of the present invention with the duckbill valve in an open and expanded condition.
- FIG. 3 is a schematic of the device of the present invention in two positions; one closed and the other as completely open.
- FIG. 1 shows the device of the present invention shown, generally, by reference numeral 11 .
- the device has a ring 12 , with a skirt 13 that extends downwardly. It terminates in a duckbill valve 14 whose lips 15 are ordinarily in abutment and therefore closed.
- the ring 12 is of a conventional size, similar to a wax ring which is usually associated with the bottom of a toilet bowl and is sandwiched between the toilet bowl and a horizontal flange 15 upon which the ring 12 rests.
- the horizontal flange 15 is part of the soil pipe 16 .
- the horizontal flange 15 has conventional adjustable bolts 17 extending vertically upwardly. The bolts 17 are payed upwardly through bores 18 .
- FIG. 3 shows in cross-section the device 11 of the present invention mounted on the flange 15 of the soil pipe 16 .
- the outer diameter of the skirt 13 is detailed to essentially fit closely to the inside of the soil pipe 16 to provide a snug fit.
- FIG. 3 depicts the bottom of the toilet bowl which has its horn portion 20 fitted to the bolts 17 of the flange 15 in a conventional manner with nuts 21 which clamps the bottom of the toilet bowl to the flange 15 with the ring 15 carrying its skirt 13 sandwiched there between.
- the soil pipe 16 with its flange 15 extends vertically out of the floor 22 is a conventional manner.
- FIG. 3 shows the device of the present invention and soil pipe in cross section with water flowing therethrough whereby the lips 15 of the skirt are parted and the passage of copious quantities of water is afforded.
- the ring and its skirt with its duckbill valve carrying skirt will be of the same material, i.e. an elastomeric material.
- the ring may be fabricated of a conventional way employed in a conventional toilet assembly, with a depending tubular duckbill valve carrying skirt of an elastomeric material.
Abstract
A toilet backflow preventing means and toilet bowl support for mounting between a standard soil pipe mounting flange and drain horn of a standard toilet bowl supports the toilet bowl closely adjacent the floor level, receives standard toilet bolts clamping the backflow presenting means between the toilet bowl and within the uppermost position of the soiled pipe. The backflow preventing means comprises a duckbill valve secured in said soil pipe.
Description
- Priority is claimed based on Provisional patent application Serial No. 60/450,712, filed Mar. 3, 2003
- 1. Field of the invention
- This invention relates to the art of backflow valves for toilets and specifically deals with a backflow duckbill valve attachment depending from a gasket ring into the uppermost portion of a soil pipe wherein the gasket ring when used is sandwiched between standard toilet bowls and said soil pipe without a need to raise the height of the toilet bowl.
- Backflow devices for toilets have heretofore required special toilet bowl constructions, revision of soil pipe constructions and have presented obstacles to full drainage flow from the toilet bowl to the soiled pipe.
- It would be a vast improvement in this art to provide a relatively easily fitted backflow preventing valve assembly capable of being positioned to the bottom of a toilet bowl and into the uppermost portion of a soil pipe which is self-activating.
- 2. Prior Art
- A prior attempt to prevent backflow into toilets can be seen in U.S. Pat. No. 4,637,079 to Hodge. However, this patent teaches the use of a slide valve to close the opening of a soil pipe and is interposed between the bottom of the toilet bowl and the top of the entrance to the soil pipe.
- The conventional toilet bowl has a wax ring or wax gasket interposed between the upwardly facing flange of a soil pipe and the downwardly facing opening of the horn of a toilet bowl and is sandwiched therebetween to form a good seal. Frequently, the wax ring or wax gasket is fitted with a downwardly extending tubular skirt which extends for a small distance into the soil pipe thereby improving the sealing characteristics of the ring or gasket. Such skirts are seen in such prior art U.S. Pat. No. 3,224,614 to Pietrzak; U.S. Pat. No. 3,311,391 to Harrell; U.S. Pat. No. 3,349,412 to Shwartz et al U.S. Pat. No. 3,409,918 to Gaddy; U.S. Pat. No. 3,568,222 to Gantzert; U.S. Pat. No. 4,384,910 to Prodyma; U.S. Pat. No. 4,482,161 to Izzi, Jr; U.S. Pat. No. 5,134,727 to Scott; U.S. Pat. No. 5,185,890 to Dismore et al; U.S. Pat. No. 5,291,619 to Adoyan; U.S. Pat. No. 5,432,957 to Fermie et al; U.S. Pat. No. 5,608,922 to Leivis; U.S. Pat. No. 5,957,201 to Gorsior; U.S. Pat. No. 6,026,521 to Atkins; U.S. Pat. No. 6,085,363 to Huber; U.S. Pat. No. 6,128,947 to Anderson Sr., U.S. Pat. No. 6,325,356 to Rozenblatt; and U.S. Pat. No. 6,442,769 to Phillips.
- According to this invention there is provided a gasket or ring having the conventional configuration and size of a wax ring long used in sealing the bowl of a toilet bowl to the upwardly facing flange of a soil pipe. However, preferably, the said ring or gasket is not fabricated of a wax but rather in a plastic, preferably of a thermoplastic such as polyethylene or polypropylene. The ring or gasket has a tubular skirt depending therefrom. The skirt is a diameter whereby it extends for a distance into the soil pipe. The skirt terminates in a duckbill valve detailed to open upon the release of water from the toilet reservoir or the pressure of water from another source occurring upon flushing. The weight of water opens the duckbill valve permitting the flow therethrough. The duckbill valve closes upon the cessation of a flushing and concomitant cessation of water flow. The valve closes under the aegis of its own elasticity as the duckbill valve is constructed of rubber or the like. The self closing of the duckbill valve prevents backflow into the toilet bowl of foam or bubbles that may have accumulated in the soil pipe a comment occurrence in tall apartment houses having a plurality of dish washers and/or laundry washers which all discharge into soil pipes that flow downwardly through numerous floors. The bubbles and foam produced from the suds of the said washers, being light have a tendency to hang up in the soil pipe rather than immediately flowing out through the sewer to the street. The many serpentine soil pipes result in convoluted flow providing hang ups for the accumulation of bubbles and foam. In many instances the thusly accumulated bubbles have a tendency to move up the horn of the toilet bowl to make their presence known in the toilet bowl water.
- The present invention-provides a salutary solution to the problem of bubbles or foam emerging out of the toilet bowl water.
- FIG. 1 is a perspective showing the device of the present invention shown explosively between a flange bearing soil pipe and the bottom of a toilet bowl.
- FIG. 2 is a perspective of the device of the present invention with the duckbill valve in an open and expanded condition.
- FIG. 3 is a schematic of the device of the present invention in two positions; one closed and the other as completely open.
- FIG. 1 shows the device of the present invention shown, generally, by
reference numeral 11. The device has aring 12, with askirt 13 that extends downwardly. It terminates in aduckbill valve 14 whoselips 15 are ordinarily in abutment and therefore closed. Thering 12 is of a conventional size, similar to a wax ring which is usually associated with the bottom of a toilet bowl and is sandwiched between the toilet bowl and ahorizontal flange 15 upon which thering 12 rests. Thehorizontal flange 15 is part of thesoil pipe 16. Thehorizontal flange 15 has conventionaladjustable bolts 17 extending vertically upwardly. Thebolts 17 are payed upwardly throughbores 18. - The left side of FIG. 3 shows in cross-section the
device 11 of the present invention mounted on theflange 15 of thesoil pipe 16. The outer diameter of theskirt 13 is detailed to essentially fit closely to the inside of thesoil pipe 16 to provide a snug fit. - The right side of FIG. 3 depicts the bottom of the toilet bowl which has its
horn portion 20 fitted to thebolts 17 of theflange 15 in a conventional manner withnuts 21 which clamps the bottom of the toilet bowl to theflange 15 with thering 15 carrying itsskirt 13 sandwiched there between. - The
soil pipe 16 with itsflange 15 extends vertically out of thefloor 22 is a conventional manner. - The right side of FIG. 3 shows the device of the present invention and soil pipe in cross section with water flowing therethrough whereby the
lips 15 of the skirt are parted and the passage of copious quantities of water is afforded. - In the right side of FIG. 3, with the lips of the duckbill valve being closed, as no water is flowing, it is seen that an accumulation of
bubbles 23 has gathered beneath the duckbill valve, but, due to the presence of the duckbill valve cannot progress upwardly thereby preventing egress into the toilet bowl. - It is contemplated in a preferred embodiment that the ring and its skirt with its duckbill valve carrying skirt will be of the same material, i.e. an elastomeric material. In another embodiment, it is contemplated that the ring may be fabricated of a conventional way employed in a conventional toilet assembly, with a depending tubular duckbill valve carrying skirt of an elastomeric material.
Claims (2)
1) A toilet backflow preventing means comprising
an elongated tubular device having a first end and a second opposite end,
said first end having a perpendicular flange,
said second end terminating in a plurality radial slits,
said slits having edges normally in abutment to valve close said elongated tubular device,
said slits adapted and constructed to part under the aegis of a liquid discharge in one slits direction through said elongated tubular decice,
at least the second opposite end of the elongated tubular device having said plurality of radial slits being constructed of an elastomeric material,
whereby with the cessation of the liquid discharge the slits will assume a normal abutment, thereby preventing a gaseous flow through the elongated device in an opposite direction.
2) The toilet backflow preventing means of claim 1 wherein slits define a dukbill valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/789,991 US20040172745A1 (en) | 2003-03-03 | 2004-03-02 | Backflow preventing attachment for toilets |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45071203P | 2003-03-03 | 2003-03-03 | |
US10/789,991 US20040172745A1 (en) | 2003-03-03 | 2004-03-02 | Backflow preventing attachment for toilets |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040172745A1 true US20040172745A1 (en) | 2004-09-09 |
Family
ID=32930573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/789,991 Abandoned US20040172745A1 (en) | 2003-03-03 | 2004-03-02 | Backflow preventing attachment for toilets |
Country Status (1)
Country | Link |
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US (1) | US20040172745A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090071552A1 (en) * | 2007-09-17 | 2009-03-19 | Thomas Earl Kelly | Backflow preventing apparatus for water closets |
US20110017316A1 (en) * | 2007-09-17 | 2011-01-27 | Thomas Earl Kelly | Backflow preventing apparatus for water closets |
US20160278720A1 (en) * | 2015-03-25 | 2016-09-29 | Shimadzu Corporation | Radiographic apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4492253A (en) * | 1980-12-29 | 1985-01-08 | Red Valve Company, Inc. | Tide gate valve |
US5408704A (en) * | 1993-09-09 | 1995-04-25 | Sealand Technology, Inc. | Low volume vacuum toilet assembly |
US5937888A (en) * | 1997-12-23 | 1999-08-17 | Sealand Technology, Inc. | Toilet waste collection system for campgrounds |
US6382255B2 (en) * | 2000-06-21 | 2002-05-07 | Munster Simms Engineering Limited | Check valves |
-
2004
- 2004-03-02 US US10/789,991 patent/US20040172745A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4492253A (en) * | 1980-12-29 | 1985-01-08 | Red Valve Company, Inc. | Tide gate valve |
US5408704A (en) * | 1993-09-09 | 1995-04-25 | Sealand Technology, Inc. | Low volume vacuum toilet assembly |
US5937888A (en) * | 1997-12-23 | 1999-08-17 | Sealand Technology, Inc. | Toilet waste collection system for campgrounds |
US6382255B2 (en) * | 2000-06-21 | 2002-05-07 | Munster Simms Engineering Limited | Check valves |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090071552A1 (en) * | 2007-09-17 | 2009-03-19 | Thomas Earl Kelly | Backflow preventing apparatus for water closets |
US7789104B2 (en) | 2007-09-17 | 2010-09-07 | Thomas Earl Kelly | Backflow preventing apparatus for water closets |
US20110017316A1 (en) * | 2007-09-17 | 2011-01-27 | Thomas Earl Kelly | Backflow preventing apparatus for water closets |
US8636026B2 (en) | 2007-09-17 | 2014-01-28 | Thomas Earl Kelly | Backflow preventing apparatus for water closets |
US20160278720A1 (en) * | 2015-03-25 | 2016-09-29 | Shimadzu Corporation | Radiographic apparatus |
US9844352B2 (en) * | 2015-03-25 | 2017-12-19 | Shimadzu Corporation | Radiographic apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |