Patents by Inventor Kenneth D. Griswold

Kenneth D. Griswold 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).

  • Mobile shelving carriage
    Patent number: 4771901
    Abstract: The specification discloses a simple, yet extremely strong and serviceable, mobile shelving carriage construction. A first extruded frame member defines integral screw bosses within its cross-sectional shape. A second frame member is secured to the first frame member by screws secured within the integral bosses. A roller axle is mounted in the first frame member and includes a circumferential groove aligned with one of the screw bosses. The securement screws interfit with the axle groove to retain the axle within the first frame member.
    Type: Grant
    Filed: January 15, 1987
    Date of Patent: September 20, 1988
    Assignee: Pipp Mobile Systems, Inc.
    Inventors: Kenneth D. Griswold, Alan R. Leist