Patents by Inventor Franklin R. Held

Franklin R. Held 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).

  • Racquetball racquet having a metal frame meshable with a throat piece
    Patent number: 4290604
    Abstract: A racquetball racquet having a metal frame is disclosed, wherein increased stiffness in the metal frame is provided by a grooved contact between the inner surfaces of the frame comprising the outer perimeter of the racquet and a throat piece, completing the reinforced enclosure within which the strings are arranged. This grooved contact of the throat piece with the metal frame further resists the stress and strain of contact between the racquet and the racquetball, such that the entire surface of the strings behaves in a uniform and predictable fashion.
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: September 22, 1981
    Assignee: Ektelon
    Inventor: Franklin R. Held