Non-splash urinal strainer
The present invention is directed to a non-splash urinal strainer with a perforated base pad and a deodorant canister fixed to the base pad. The deodorant canister includes a continuous outside wall fixed to a funnel shaped conduit that extends through the deodorant canister. The funnel shaped conduit has a large open target end for receiving an incoming urine stream and a drain end closed with a perforated grate positioned proximate the perforated base pad. Deodorant material is contained within a space provided between the continuous outside wall and the funnel shaped conduit.
The present invention is directed to urinal strainers, and in particular, to a non-splash urinal strainer that includes a deodorant canister with a funnel shaped conduit adapted to receive, trap, and direct an incoming urine stream into the waste drain of a urinal without encountering urine splash back from the strainer device.
Various urinal strainers have been developed in the past to prevent debris from entering and clogging the waste drain of a urinal. Many of the past strainer devices include containers that hold blocks of deodorant to freshen and sanitize the urinal bowl. A problem associated with past urinal strainers is urine splash back. When a stream of urine strikes a strainer, it tends to splash back onto both the user and onto the floor of the restroom. Some improvements have been made in an attempt to eliminate the urine splash back problem, but without great success. One such attempt to eliminate splash back is disclosed in U.S. Pat. No. 5,365,616 granted to Morad on Nov. 22, 1994. The Morad device includes a strainer with a deodorant block holder that has a circular top with a small central opening (about ¼ inch in diameter) and a plurality of spaced apart radial slots that extend from the central opening to the outside wall of the deodorant block holder. When urine strikes the small central opening, it is expected that the impacting urine will flow through the opening and into the deodorant block holder, thereby reducing urine splash back.
The strainer disclosed in the Morad patent fails to eliminate splash back for various reasons. First, the small ¼ inch diameter hole makes it difficult for the user to hit the intended target area. In addition, it is very likely that the user will not know that the small central opening is a urine target area. Second, if the urine stream strikes the deodorant block located directly below the ¼ inch hole and the radial slots, the force of the impacting urine on the deodorant block causes urine splash back. Finally, the solid portions or ribs located between the spaced apart radial slots cause splash back when they are struck by the incoming stream of urine.
SUMMARY OF THE INVENTIONAccordingly, it is a first object of the present invention to provide a urinal strainer that prevents debris from entering the waste drain, deodorizes and sanitizes the urinal bowl, and eliminates urine splash back.
It is another object of the present invention to provide a urinal strainer with an enlarged target area for receiving an incoming stream of urine.
It is another object of the present invention to provide a urinal strainer having a funnel shaped conduit with an open end that provides a target area for receiving and directing an incoming urine stream toward the drain end of the funnel shaped conduit.
It is another object of the present invention to provide a urinal strainer that includes a urine trap to receive urine discharged from the drain end of the funnel shaped conduit, the urine trap providing a buffer that reduces energy in the flow of urine and eliminates urine splash back.
It is still another object of the present invention to provide a urinal strainer having a perforated grate attached to the drain end of the funnel shaped conduit to diffuse the incoming urine stream and to prevent debris from entering into the urine trap.
In satisfaction of the foregoing objects and advantages, the present invention includes a non-splash urinal strainer with a perforated base pad and a deodorant canister fixed to the base pad. The deodorant canister includes a continuous outside wall fixed to the base pad, a funnel shaped conduit having an open end fixed to the continuous outside wall and a drain end proximate the perforated base pad. A perforated grate is attached to the drain end of the funnel shaped conduit, and deodorant material is contained within a space provided between the continuous outside wall of the deodorant canister and the funnel shaped conduit.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to
The deodorant canister 4 comprises a continuous outside wall 6 fixed to and extending upward from the flexible base pad 2. The outside wall is sloped at an inward angle toward its upper end, and the upper end is contiguous with the open end rim 7 of a funnel shaped conduit 8. It should be understood that wall 6 may comprise a vertical wall or an outward sloped wall without departing from the scope of the present invention.
The open end of the funnel shaped conduit 8 provides an enlarged target area for receiving an incoming urine stream. The funnel shaped conduit 8 extends downward from rim 7 of canister 4 to a smaller drain end 9 positioned proximate the top surface of the flexible pad 2. A perforated grate 10 is attached to and covers drain end 9 of conduit 8 to diffuse the incoming urine stream and prevent debris from entering chamber 11 within deodorant canister 4.
Chamber 11 is defined by the outside wall 6 of canister 4, the funnel shaped conduit 8, grate 10, and the top surface of the strainer base pad 2, and inner chamber 11 includes a urine trap portion 11a and a deodorant slot 11b. Urine trap 11a comprises an open space located between grate 10 and the top surface of base pad 2, and the deodorant slot 11b comprises a space located between the outside wall 6 of canister 4 and the wall portion of the funnel shaped conduit 8 that extends into the deodorant canister. Urine trap 11a functions as a buffer between the drain end 9 of the funnel shaped conduit 8 and the hard surface of a urinal bowl. A ring of solid deodorant material 12, or granular deodorant material 12, is supported on the top surface of base pad 2 and contained within the deodorant slot 11b between the outside wall 6 and the funnel shaped conduit 8. A plurality of apertures 14 extend through the continuous outside wall 6 and communicate with slot 11b. The combination of outside wall apertures 14 and base pad slots 3, expose the deodorant material 12 to the urinal bowl environment. In
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The slotted outer wall 6 of the deodorant canister enables deodorizing to occur when urinal 15 is flushed. This arrangement extends service life of the deodorizing material 12 for the following reason. Previous deodorizing strainers, such as the Morad device, include openings along the top surface of the deodorant block holder and the incoming urine stream impacts on the deodorant causing rapid erosion of the material and also splash back. Such rapid erosion is caused by the destructive chemicals in urine in combination with the force of the impact on the deodorant block. The preferred embodiment of the present invention overcomes the deodorant erosion problem by providing a solid funnel shaped wall 8 that receives and protects the deodorant material 12 from the incoming urine stream while still freshening and sanitizing the urinal with each flush of the urinal fixture. When the fixture is flushed, the flush water flows through apertures 14 provided in the outer wall 6 of the canister 4 and into the deodorant slot 11b where the flush water and remaining urine is treated with deodorant. The incoming flush water dissolves an amount of deodorant material 12 as it flows downward through slot 11b, through the perforations or slots 3 provided in the flexible strainer pad 2, and is discharged from the urinal bowl through the waste drain 17. During the flushing operation, while the flush water is rising within the urinal bowl, the rising treated water in the bottom of the urinal bowl flows upward through grate 10 and into conduit 8, thereby deodorizes/sanitizes the funnel shaped conduit 8 during each flush cycle.
Tests were conducted to determine the effectiveness of the present non-splash urinal strainer, shown in
Test 1: An empty container was placed on a blank chart pad that was positioned to catch any splash back that occurred during the test. It was intended that the splash back would mark the chart pad and enable measurement of the splash back pattern. A purchased Morad urine strainer was supported on the rim of the empty container and a stream of water was directed toward the ¼ inch hole in the slotted top surface as disclosed in the patent. During testing, an attempt was made to simulate the impact force of an average urine stream. Based on information taken from Medline Plus, a service of the U.S. National Library, the average urine flow rate for a male between 14 to 45 years old is 21 mL/sec. It was estimated that the average length of a urine stream is about 10 inches. Twelve ounces of water in a 10 inch long stream of water at a flow rate of about 21 mL/sec. was directed toward the ¼ inch target located in the top surface of the Morad strainer. Splash back was observed and caught on the blank chart pad, and the resulting splash back pattern on the chart pad was measured. In this test, the splash back pattern on the chart pad measured a distance of between 24 to 25 inches from the ¼ inch target area provided by the Morad non-splash urine strainer device.
Test 2: The Morad device with the preferred urinal strainer device shown in
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As such, the present invention is disclosed in terms of a preferred embodiment and alternate embodiments that fulfill each one of the objects set forth above, and the invention provides a new and improved non-splash urinal strainer. Of course, those skilled in the art may contemplate various changes, modifications, and alterations from the teachings of the present disclosure without departing from the intended spirit and scope of the present invention.
Claims
1. A urinal strainer, comprising:
- a) a perforated base pad;
- b) a deodorant canister fixed to said perforated base pad; and
- c) a conduit extending into said deodorant canister, said conduit fixed to said deodorant canister, said conduit having an open end to receive a urine stream and drain end positioned proximate said perforated base pad to discharge urine from said conduit.
2. The invention recited in claim 1, wherein:
- a) said deodorant canister comprises an outside wall having one end fixed to said perforated base pad and an opposite end fixed to said open end of said conduit; and
- b) said conduit comprises a tapered wall from said open end to said drain end so that said drain end is smaller than said open end, said drain end positioned above a top surface of said perforated base pad.
3. The invention recited in claim 2, wherein said open end is greater than ¼ inch in diameter.
4. The invention recited in claim 2, wherein said open end ranges between about 1 inch up to about 5 inches in diameter.
5. The invention recited in claim 2, wherein said open end is 2¾ inches in diameter.
6. The invention recited in claim 2, comprising a perforated grate attached to said drain end.
7. The invention recited in claim 4 comprising: a chamber within said deodorant canister, said chamber defined by said outside wall, said conduit, said perforated grate, and said perforated base pad.
8. The invention recited in claim 7, wherein said chamber comprises:
- a) a deodorant slot located between said outside wall and said conduit, said deodorant slot shaped to contain a deodorant material supported on said perforated base pad, and
- b) a urine trap located between said perforated grate and said perforated base pad.
9. The invention recited in claim 8, comprising: a plurality of apertures that extend through said outside wall into said deodorant slot.
10. The invention recited in claim 8, comprising: a plurality of apertures that extend through said conduit into said deodorant slot.
11. The invention recited in claim 9 wherein said apertures are located within a lower half portion of said conduit.
12. The invention recited in claim 2, wherein said drain end is fixed to said perforated base pad.
13. The invention recited in claim 12 comprising: a deodorant slot between said outside wall and said conduit, said deodorant slot shaped to contain a deodorant material supported on said perforated base pad.
14. The invention recited in claim 13, comprising: a plurality of apertures that extend through said outside wall into said deodorant slot.
15. The invention recited in claim 13, comprising: a plurality of apertures that extend through said conduit into said deodorant slot.
16. The invention recited in claim 8, comprising: a rim-ring extending between and fixed to said opposite end of said outside wall and said open end of said conduit so that said deodorant slot is enlarged.
17. The invention recited in claim 13, comprising: a rim-ring extending between and fixed to said opposite end of said outside wall and said open end of said conduit so that said deodorant slot is enlarged.
18. The invention recited in claim 1, wherein said conduit extends through said deodorant canister and through said perforated base pad to a location below a bottom surface of said perforated base pad.
19. The invention recited in claim 18, comprising: a deodorant slot located between said outside wall and said conduit, said deodorant slot shaped to contain a deodorant material supported on said perforated base pad.
20. The invention recited in claim 19, comprising: a rim-ring extending between and fixed to said opposite end of said outside wall and said open end of said conduit so that said deodorant slot is enlarged.
21. The invention recited in claim 19, comprising: a plurality of apertures that extend through said outside wall into said deodorant slot.
22. The invention recited in claim 19, comprising: a plurality of apertures that extend through said conduit into said deodorant slot.
23. The invention recited in claim 1, comprising: indicia imprinted on a surface area within said conduit.
24. The invention recited in claim 1, wherein said perforated base pad comprises spaced apart slots extending through said base pad.
25. The invention recited in claim 1, wherein said perforated base pad comprises spaced apart circular holes extending through said base pad.
26. The invention recited in claim 1, wherein said perforated base pad comprises a mesh that provides openings through said base pad.
27. A non-splash urinal strainer, comprising:
- a) a perforated base pad; and
- b) a deodorant canister Including; i. a continuous outside wall having a first end fixed to said perforated base pad; ii. a funnel shaped conduit having open end fixed to a second end of said continuous outside wall, said funnel shaped conduit extending from said open end to a drain end positioned within said continuous outside wall proximate said perforated base pad; iii. a perforated grate attached to said drain end of said conduit; and iv. a deodorant material contained within a space provided between said continuous outside wall and said funnel shaped conduit portion within said continuous outside wall.
28. A method of eliminating splash back from a urinal fixture, comprising:
- a) placing a urinal strainer over a waste drain provided in a bowl portion of the urinal fixture, said urinal strainer including; i. a perforated base pad; and ii. a deodorant canister fixed to said perforated base pad; and iii. a funnel shaped conduit having an open end attached to said deodorant canister, said attached conduit extending into said deodorant canister to a drain end located proximate said perforated base pad.
- b) directing a urine stream into said open end of said funnel shaped conduit;
- c) containing urine splash back within said funnel shaped conduit;
- d) discharging urine from said drain end onto said perforated base pad, and
- e) draining said discharged urine through said perforated base pad and into the waste drain of the urinal fixture.
29. The method recited in claim 28, wherein said deodorant canister includes deodorant material contained within a space provided between a perforated continuous outside wall and a portion of said funnel shaped conduit that extends into said deodorant canister, the steps of the method further including:
- a) flushing the urinal fixture with incoming flush water;
- b) directing the flush water through said perforated continuous outside wall into said space containing deodorant material so that said perforated base, said deodorant canister, said funnel shaped conduit, and the urinal are cleansed with a deodorant containing flush water.
30. The method recited in claim 29 wherein said open end of said funnel shaped conduit is attached to said continuous outside wall and said funnel shaped conduit includes:
- a) a perforated grate attached to said drain end proximate said perforated base pad; and
- b) a urine trap located between said drain end and said perforated base pad, said urine trap communicating with said space containing deodorant material;
- the steps of the method further including, causing said deodorant containing flush water to flow from said deodorant material, into said urine trap whereby rising deodorant containing flush water flows upward into said funnel shaped conduit.
Type: Application
Filed: Feb 15, 2006
Publication Date: Aug 16, 2007
Inventor: Daniel Emr (Clearwater, FL)
Application Number: 11/355,227
International Classification: E03D 13/00 (20060101);