Patents by Inventor Richard S. Goodwin

Richard S. Goodwin 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).

  • Wafer check valves
    Patent number: 4694853
    Abstract: A wafer check valve having an annular housing, closing flaps effective to close a passage through the housing and spring urged to a passage closing position, the flaps being mounted on one or more hinge pins, the or each hinge pin extending at each end into a bore in an insert, the inserts being received in respective slots in the body and including means retaining the inserts in the slots without movement.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: September 22, 1987
    Assignee: R. Goodwin International Ltd.
    Inventor: Richard S. Goodwin