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Automatic filling and flushing valve assembly for bowl

  • US 5,784,998 A
  • Filed: 11/25/1996
  • Issued: 07/28/1998
  • Est. Priority Date: 11/25/1996
  • Status: Expired due to Fees
First Claim
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1. A valve assembly that is adapted to be mounted in a bowl which is adapted to contain liquid, said valve assembly comprising:

  • (a) a housing having a liquid-tight bulkhead at the base thereof, said housing and bulkhead defining a chamber for containment of the liquid, wherein the housing has a plurality of holes, each of which is located above the bulkhead and positioned so that liquid in the chamber may flow through the holes and into the bowl;

    (b) a supply tube which is adapted for connection to an external source of the liquid, said tube having an opening therein that is located within the chamber for passage of the liquid from the external source into the chamber;

    (c) a valve seat that is in fluid communication with the supply tube and located between the connection to the external source of the liquid and the opening for passage of the liquid into the chamber;

    (d) a valve which is seated in the valve seat and adapted to be moved from an open position, which permits the flow of the liquid from the external source through the supply tube and through the opening therein into the chamber, to a closed position which stops the passage of the liquid from the external source through the opening in the supply tube;

    (e) a float which is adapted to rise and fall within the chamber depending on the level of the liquid in the chamber;

    (f) means for attaching the float to the valve so that a rise in the level of liquid in the chamber which raises the float to a predetermined level corresponding to the desired level of liquid in the bowl will tend to move the valve from an open position to a closed position; and

    (g) means for retarding the closing of the valve as the level of liquid in the chamber reaches the predetermined level therein corresponding to the desired level of liquid in the bowl, said retarding means including a cap for the housing having a vent hole therethrough, said cap being adapted to mate with the housing so as to permit the air in the chamber above the water level to be compressed as the level of liquid rises therein, and said vent hole being sized so as to permit the air above the level of liquid in the chamber to be vented from the chamber at a controlled rate as the air is compressed to retard the closing of the valve for a predetermined period so as to permit the liquid to flow into the bowl in a quantity greater than that required to fill the bowl to the desired level so that a predetermined quantity of the liquid will overflow the bowl when the valve is actuated to permit the flow of the liquid to the bowl and before the valve is moved to a closed position.

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