Claims
- 1. A valve assembly for a toilet having a flush tank with an outlet, said valve assembly comprising
- a) a valve that seats on said outlet in a closed position, said valve having an open position which allows a fast flow of water through said outlet, and a slightly-open position which allows a substantially slower flow of water through said outlet,
- b) sustaining means for sustaining said valve in said open position until water in said tank has partially drained to a predetermined level, whereupon said sustaining means then allows said valve to quickly drop to said slightly-open position,
- c) a delayer comprised of an envelope forming a water-tight chamber, said envelope having an end attached to said valve and an opposite end attached to an arm, said delayer and said arm moving freely with said valve as said valve opens and as said valve doses to said slightly-open position, said arm contacting a support means when said valve reaches said slightly-open position while closing, preventing farther movement of said arm and said opposite end, said valve causing said chamber to then alter from a first volume to a second volume as said valve closes from said slightly-open position to seat on said outlet,
- d) a relief opening which allows water to flow freely through said envelope as said chamber returns to said first volume, and
- e) a control opening which controls the rate of water flow through said envelope as said chamber alters to said second volume,
- whereby said sustaining means allows a predetermined amount of water to flow quickly through said outlet to flush said toilet and said control opening controls the rate at which said chamber alters to said second volume, thus controlling the rate at which said valve closes from said slightly-open position, allowing a smaller predetermined amount of water to flow through said outlet to refill the bowl of the said toilet.
- 2. The valve assembly of claim 1, wherein sides of said chamber comprise flexible material extending between opposite ends of said chamber, said sides having a curved cross section when said chamber is contracted which is nearly as wide as the distance between said opposite ends when said chamber is expanded.
- 3. The valve assembly of claim 1, wherein said control opening also serves as said relief opening.
- 4. The valve assembly of claim 1, wherein increased water pressure on said control opening decreases the size of said control opening, whereby the rate of water flow through said envelope remains somewhat constant for varying water pressures.
- 5. The valve assembly of claim 4, wherein said control opening comprises an elastomeric flap attached to a plate which forms a part of said envelope, said flap extending over a hole in said plate and said flap having a shallow trough of predetermined size in its side which presses against said plate.
- 6. A valve assembly for a flush tank with an outlet, said valve assembly comprising,
- a) a plate rotably connected along an axis in said flush tank, said plate rotating between a first position a short distance above said outlet and a second position considerably farther above said outlet,
- b) support means to prevent said plate from rotating below said first position,
- c) a valve that seats on said outlet in a closed position, and rotates around said axis with said plate to an open position as said plate rotates to said second position,
- d) a sustaining means for sustaining said plate in said second position and said valve in said open position until water in said tank has drained to a predetermined level,
- e) an envelope forming a chamber having an end attached to said plate and an opposite end attached to said valve, said chamber alternating between a first volume when said valve is adjacent said pate and send volume when said valve is in said closed position and said plate is in said first position, and
- f) a control opening in said chamber which controls the rate of water flow through said envelope as said chamber alters to said second volume,
- whereby when said plate is in said second position a large quantity of water flows through said outlet for flushing until said plate drops to said first position where said control opening controls the rate at which said chamber alters to said second volume, which controls the rate of final closing of said valve, allowing a predetermined smaller quantity of water to flow through said outlet for refilling a toilet bowl.
- 7. The valve assembly of claim 6, wherein said valve is rotably attached to said plate, whereby said outlet said valve and said axis comprise said support means and water flow around said valve cause said chamber to remain at said first volume until said plate reaches said first position.
- 8. The valve assembly of claim 6, wherein said end is integral with said plate and said opposite end is integral with said valve.
RELATED APPLICATIONS
This is a continuation-in-part of Ser. No. 08/571,141, filed Dec. 12, 1995, now abandoned, which was a division of Ser. No. 08/342,746, filed Nov. 21, 1994, now U.S. Pat. No. 5,524,297, granted Jun. 11, 1996.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
342746 |
Nov 1994 |
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Continuation in Parts (1)
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Number |
Date |
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571141 |
Dec 1995 |
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