Patents by Inventor Spencer P. Buckner

Spencer P. Buckner 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).

  • Flapper valve with independent spring action
    Patent number: 4005732
    Abstract: An improvement in multi-flapper check valves wherein each flapper is urged toward closure by an independent spring or springs, thereby improving the valve response for closure.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: February 1, 1977
    Assignee: TRW Inc.
    Inventor: Spencer P. Buckner
  • Flapper valve with independent plate suspension
    Patent number: 3965926
    Abstract: An improvement in multi-flapper check valves wherein each closure plate or "flapper" and its hinges are supported separately, the hinges of the plates thereby not contacting or supporting each other, thus reducing the frictional load to be overcome in closing the plates.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: June 29, 1976
    Assignee: TRW Inc.
    Inventor: Spencer P. Buckner
  • Flapper valve with independent spring action
    Patent number: RE30532
    Abstract: An improvement in multi-flapper check valves wherein each flapper is urged toward closure by an independent spring or springs, thereby improving the valve response for closure.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: March 3, 1981
    Assignee: TRW Inc.
    Inventor: Spencer P. Buckner