Patents by Inventor Steven V. Brewer

Steven V. Brewer 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).

  • Gate valve having O-ring seal
    Patent number: 3937442
    Abstract: In a knife gate valve, an elastomer O-ring is held in an annular groove in a face of a valve seat by cotter pins having their eyes embedded in the O-ring and their shanks extending through the valve seat and clinched over. The eyes are adhered to the O-ring by vulcanization of the O-ring.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: February 10, 1976
    Assignee: Dillingham Corporation
    Inventors: Charles H. Martin, Steven V. Brewer