Patents by Inventor William P. Gaines

William P. Gaines has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Valve closure means
    Patent number: 4564170
    Abstract: A closure means, for a valve, comprising communicating inlet and outlet ports and a closeable valve seat therebetween, comprising an elongated headless valve stem extending from the valve face through the seat into the inlet port and a resilient washer retained on the stem having an outer diameter larger than the valve seat and an inner hole larger than the stem to allow the washer to ride loose on the stem when the valve is open and close tight on the seat when the valve is closed.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: January 14, 1986
    Inventor: William P. Gaines