Patents by Inventor Charlesworth R. Martin

Charlesworth R. Martin 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: 5060994
    Abstract: A vehicle door guard (10) is constructed of a one-piece resilient elongated body member (12) extruded as one piece to have a slot (18) along a length of a front surface thereof. After the elongated body member is extruded, two separated, semi-circular, transverse hinge notches (42 and 44) are cut into the front surface for separating first and second end portions (58 and 60) of the body member and first and second elongated magnets (14 and 16) are mounted in first and second portions of the elongated slot in the respective first and second end portions. The semi-circularly shaped notches are separated by a plateau (46), through which the elongated slot extends without a magnet therein, by an approximate distance equal to the radius (37) of the semi-circular notches.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: October 29, 1991
    Inventors: Charlesworth R. Martin, Edward O. Adusei