Patents by Inventor Andrew J. Marsden

Andrew J. Marsden 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).

  • Games racket frame
    Patent number: 5236198
    Abstract: A games racket frame is discontinuous being in two parts (11, 12). The parts (11, 12) are joined by a vibration-damping material (21) secured in position by plugs (23, 24). A reinforcing member (14) is also provided and this may comprise a collar (20) surrounding the discontinuity (13), together with a rod (25) contained within the vibration-damping material (21). Rackets according to the invention exhibit reduced transmission of shock and vibration to the player, thus minimizing the risk of "tennis elbow" and similar injuries.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: August 17, 1993
    Assignee: Dunlop Limited
    Inventors: Robert C. Haines, Michael E. Curtis, Andrew J. Marsden