Patents by Inventor Paul D. Lund

Paul D. Lund 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).

  • Bi-directional retainer
    Patent number: 6454485
    Abstract: A bi-directional retainer for removably securing accessories such as a seat or a back rest to a wheelchair frame. The retainer includes a base mountable on a frame member and a slide mounted on the base for movement between two spaced operating positions. It also includes a spring disposed between the slide and the base providing an over the center action which urges the slide to remain in a selected operating position.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: September 24, 2002
    Assignee: Adaptive Engineering Lab, Inc.
    Inventors: Malin E. Holcomb, Paul D. Lund
  • BI-DIRECTIONAL RETAINER
    Publication number: 20010048843
    Abstract: A bi-directional retainer for removably securing accessories such as a seat or a back rest to a wheelchair frame. The retainer includes a base mountable on a frame member and a slide mounted on the base for movement between two spaced operating positions. It also includes a spring disposed between the slide and the base providing an over the center action which urges the slide to remain in a selected operating position.
    Type: Application
    Filed: March 10, 1999
    Publication date: December 6, 2001
    Inventors: MALIN E. HOLCOMB, PAUL D. LUND
  • Apparatus for determining the position of a fifth wheel on a multi-axle vehicle
    Patent number: 4649369
    Abstract: Apparatus for identifying the position of the movable portion of a fifth wheel which is useful on a multi-axle vehicle relative to the fixed rail portion (24) thereof. The apparatus includes sensing element (34) positioned on the movable fifth wheel portion for recognizing the successive, teeth-like elements (22) of the rail portion, and a signal processor (30) which is responsive to the sensing element (34) for determining the direction of movement of the fifth wheel and for counting the number of teeth (22) recognized by the sensing element (34).
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: March 10, 1987
    Assignee: Partnership of Robert Walker and Paul Lund
    Inventors: Robert L. Walker, Dale A. Crowe, Paul D. Lund