Patents by Inventor Leon E. Griffith

Leon E. Griffith 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).

  • Stile extending attachment for ladder
    Patent number: 5232067
    Abstract: An attachment device is provided for use with a ladder having two side stile members and a plurality of hollow rungs connected therebetween for extending at least one of said side stile members so that the ladder can be used on uneven ground. The attachment device comprises an elongated member provided with a longitudinal slot extending lengthwise therethrough, and mounting means for adjustably attaching the elongated member to one of the side stile members. The mounting means includes at least one first crossbar adapted to fit through the slot in the elongated member and to extend through one of the hollow rungs and means for securing opposite ends of the at least one first crossbar to the side stile members.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: August 3, 1993
    Inventor: Leon E. Griffith