Patents by Inventor Francis E. Riverman

Francis E. Riverman 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).

  • Golf club shaft adapted to allow for axial rotation at an intermediate extent
    Patent number: 5538476
    Abstract: A golf club shaft adapted to allow for axial rotation at an intermediate extent comprising a long lower exterior shaft component of a cylindrical configuration with an interior surface and an exterior surface adapted to receive a golf club head at its lower extent and adapted to receive the lower extent of a grip at its upper extent, a short upper interior shaft component a cylindrical configuration with an interior surface and an exterior surface, the upper shaft component adapted to have its lower extent rotatably received within the upper extent of the lower shaft component and with the upper extent of the upper shaft adapted to be received within the upper extent of the grip, and an elastomeric grip positioned over the upper extent of the upper shaft component and the upper extent of the lower shaft component.
    Type: Grant
    Filed: June 20, 1995
    Date of Patent: July 23, 1996
    Inventor: Francis E. Riverman