Under-the-rim dispensing unit

• US 4,777,670 A
• Filed: 01/13/1988
• Issued: 10/18/1988
• Est. Priority Date: 01/13/1988
• Status: Expired due to Term

• Current Assignee: SC Johnson & Son Incorporated
• Original Assignee: SC Johnson & Son Incorporated
• Inventors: Wefler, Mark E., Klinkhammer, Michael E.
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/143,906
• Time in Patent Office: 279 Days
• Field of Search: 4/231, 4/224, 4/222, 4/223, 4/309, 4/261, 4/222.1, 222/434, 222/438, 422/5, 422/263, 422/266, 422/275
• US Class Current: 4/231
• CPC Class Codes: B01F 21/22 using additional holders in conduits, containers or pools for keeping the solid material in place, e.g. supports or receptacles
• CPC Class Codes: E03D 9/032 Devices connected to or dispensing into the bowl

Abstract

A dispenser for dispensing a dissolvable product into a toilet bowl. The structure of the dispenser properly meters and times the flow of water therethrough to increase operational efficiency. The dispenser includes a substantially sealed container enclosing the product and having an entrance hole and an exit hole. Water flow interruptions are positioned to interrupt the flow of flush water and to channel the water to the entrance. A sufficient change of water is guaranteed by the deflectors while excess water is limited by the size of the entrance. A deflector is positioned to deflect water away from the product, and instead to cause the water to rise gently in the containers. The size of the exit hole ensures that water remains in the container after flushing has stopped, so that the dissolved product is efficiently infused into the water standing in the toilet bowl as the water level in the container recedes.

Claims

1. A dispenser for using a flow of water during a toilet flush to dispense a dissolvable product into a toilet bowl, said dispenser comprising:

a substantially sealed container for containing and releasing water, said container having an upper surface which includes an entrance permitting water to enter said container, said container also having an exit opening disposed in a lower portion thereof permitting water and dissolved product to be released from said container;

a holder for holding the dissolvable product in said container in a position to contact water contained in said container;

flow interruption means for interrupting the flow of water as it passes said dispenser and for channelling the interrupted flow of water toward said entrance; and

a deflector for deflecting water as it initially enters said container through said entrance so that the initially entering water is substantially prevented from directly contacting the product, thereby delaying dissolution of the product.

2. A dispenser according to claim 1, wherein said holder holds the dissolvable product above a level of residual water contained in said container.

3. A dispenser according to claim 1, wherein said container comprises a housing and a removable cover.

4. A dispenser according to claim 3, wherein said cover is openable to allow replacement of the dissolvable product.

5. A dispenser according to claim 1, wherein said exit hole is sufficiently small to retain water within said container after the toilet has finished flushing.

6. A dispenser according to claim 1, wherein said exit opening is disposed in a well formed at the base of said container.

7. A dispenser according to claim 1, wherein said exit opening includes a tubular extension extending inside said container.

8. A dispenser according to claim 1, wherein said container includes a surface adapted to face toward the interior of the toilet, said exit opening being located closer to said surface than an opposing surface.

9. A dispenser according to claim 1, wherein said deflector is formed by relative displacement of said entrance and the product.

10. A dispenser according to claim 9, wherein said deflector causes water initially to contact an inside surface of said container, so that water flows down said inside surface and rises around the dissolvable product.

11. A dispenser according to claim 1, wherein dissolution of the product is delayed so that more product dissolves as water exits from said exit opening than when water enters said entrance.

12. A dispenser according to claim 1, wherein said flow interrupters comprise a plurality of ribs arranged substantially perpendicularly to the flow of water.

13. A dispenser according to claim 12, wherein said entrance comprises a plurality of holes formed within channels formed by said plurality of ribs.

14. A dispenser according to claim 13, wherein said deflector is formed by inclining said channels and by locating said holes to one side of said container.

15. A dispenser according to claim 1, wherein said entrance limits the amount of water entering said container to substantially the capacity of said container.

16. A dispenser for using a flow of water during a toilet flush to dispense a dissolvable product into a toilet bowl, said dispenser comprising:

a substantially sealed container for containing and releasing water, said container having an upper surface which includes an entrance permitting water to enter said container, said container also having an exit opening disposed in a lower portion thereof permitting water and dissolved product to be released from said container, said exit opening being sufficiently small to retain water within said container after the toilet has finished flushing;

a holder for holding the dissolvable product in said container in a position above a level of residual water contained in said container; and

a plurality of ribs oriented to interrupt the flow of water as it passes said dispenser and to channel the interrupted flow of water toward said entrance;

wherein said entrance is disposed so as to deflect water as it initially enters said container so that the initially entering water is substantially prevented from directly contacting the product, thereby delaying dissolution of the product.

17. A dispenser according to claim 16, wherein said container comprises a housing and a removable cover.

18. A dispenser according to claim 17, herein said cover is openable to allow replacement of the dissolvable product.

19. A dispenser according to claim 16, wherein said exit hole is sufficiently small to maintain said container substantially filled with water until after the toilet has finished flushing.

20. A dispenser according to claim 16, wherein said exit opening is disposed in a well formed at the base of said container and includes a tubular extension extending inside said container.

21. A dispenser according to claim 16, wherein said container includes a surface adapted to face toward the interior of the toilet, said exit opening being located closer to said surface than an opposing surface.

22. A dispenser according to claim 16, wherein said entrance is located to cause water initially to contact an inside surface of said container, so that water flows down said inside surface and rises around the dissolvable product.

23. A dispenser according to claim 16, wherein dissolution of the product is delayed so that more product dissolves as water exits from said exit opening than when water enters said entrance.

24. A dispenser according to claim 16, wherein said ribs form an inclined channel and said entrance comprises a hole located at the deep end of said channel.

25. A dispenser according to claim 16, wherein said entrance limits the amount of water entering said container to substantially the capacity of said container.

26. A dispenser for using a flow of water during a toilet flush to dispense a dissolvable product into a toilet bowl, said dispenser comprising:

a substantially sealed container for containing and releasing water, said container including a housing and a removable cover, said cover having an entrance permitting water to enter said container, said housing having an exit opening disposed in a lower portion thereof adjacent an inwardly facing surface of said housing, said exit opening permitting water and dissolved product to be released from said container, said exit opening being sufficiently small to retain water within said container after the toilet has finished flushing;

a holder including a plurality of supports for holding the dissolvable product in said container in a position above a level of residual water contained in said container; and

a plurality of ribs disposed in said cover and oriented to interrupt the flow of water as it passes said dispenser, said ribs forming an inclined channel for channelling the interrupted flow of water toward said entrance;

wherein said entrance is disposed at a lower portion of said inclined channel so as to deflect water as it initially enters said container so that the initially entering water contacts an inside surface of said housing and is substantially prevented from directly contacting the product, thereby delaying dissolution of the product.

27. A dispenser according to claim 26, wherein said exit hole is sufficiently small to maintain said container substantially filled with water until after the toilet has finished flushing.

28. A dispenser according to claim 26, wherein said exit opening is disposed in a well formed at the base of said housing.

29. A dispenser according to claim 26, wherein said exit opening includes a tubular extension extending inside said container.

30. A dispenser according to claim 26, wherein dissolution of the product is delayed so that more product dissolves as water exits from said exit opening than when water enters said entrance.

31. A dispenser according to claim 26, wherein said entrance limits the amount of water entering said container to substantially the capacity of said container.