Patents by Inventor David E. Ufford

David E. Ufford 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).

  • Submersible pump check valve
    Patent number: 4185655
    Abstract: A submersible pump check valve having a housing connected to the discharge port of a submerged pump has a poppet retained by four legs operable as cantilever springs and which interact with cam surfaces within the housing to prevent removal during normal operation of the pump but to afford selective removal from the housing for cleaning or replacement of the sealing ring without removing said housing from said submerged pump. Further, the pump need not be removed or otherwise disassembled to remove the poppet.
    Type: Grant
    Filed: January 26, 1978
    Date of Patent: January 29, 1980
    Assignee: Jacuzzi Brothers, Inc.
    Inventors: Robert D. Wilkes, Eugene C. Smith, David E. Ufford