Patents by Inventor Cecil Graham Richards

Cecil Graham Richards 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).

  • Ball valve
    Patent number: 4068822
    Abstract: In a ball-valve having an apertured rotatable ball and a seal ring contacting the surface of the ball, a radial seal includes a body insert longitudinally movable along a fluid passageway to contact the rear face of the seal ring and a peripheral ring lying partly in an internal annular groove in said passageway and partly in a rebate formed in the seal ring-insert assembly.The body insert is preferably threaded in said passageway.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: January 17, 1978
    Assignee: B. C. Richards & Co. Pty. Ltd.
    Inventor: Cecil Graham Richards