Patents by Inventor Harold W. Semar

Harold W. Semar 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).

  • Reversing apparatus
    Patent number: 4245520
    Abstract: A gear train including an internal gear is combined with a forced synchronized clutch and a hydraulic coupling to form a reversing apparatus for ship propellers.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: January 20, 1981
    Assignee: Westinghouse Electric Corp.
    Inventor: Harold W. Semar