Patents by Inventor Gary C. Fitzgerald

Gary C. Fitzgerald 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).

  • Patent number: 4964635
    Abstract: A tennis racket comprised of a handle connected to a frame with a wide open throat, a wide inverted bridge, and an open, tensioned string receiving, playing head. The longitudinal strings successively increase in length outward from the longitudinal axis and the transverse strings successively increase in length outward from the handle. The results of which are an increase in racket stability, an enlarged optimum spring back area, increasing in size outward toward the sides and upward toward the tip, the center of percussion located closer to the geometric center of the head, and the vibration levels on off-center hits being reduced.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: October 23, 1990
    Inventor: Gary C. Fitzgerald