Patents by Inventor Jeffrey D. Stringer

Jeffrey D. Stringer 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: 5301968
    Abstract: A mobile support device for a handicapped person and rollable on a reaction surface, the mobile support device comprises first and second longitudinally extending frame sections oriented in spaced relationship. A back support portion extends transversely between and is coupled with the first and second frame sections. A seat portion extends transversely between and is secured to the first and second frame sections. A wheel assembly is mounted on the frame sections so as to engage the reaction surface. The wheel assembly includes a pair of front caster wheels, a pair of rear caster wheels and a pair of central wheels. Each of the central wheels has a fixed transverse axis of rotation and is positioned intermediate the front and rear caster wheels to inhibit transverse motion. Each of the frame section carries one of the front caster wheels, one of the central wheels and one of the rear caster wheels. Each of the wheels has a lowermost tangent lying in a common plane.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: April 12, 1994
    Assignee: Guardian Products, Inc.
    Inventors: Adele E. Ward, J. R. Kingsley Ward, Kevin R. Lunau, Jeffrey D. Stringer, A. Edward Moore, Victor J. Irving
  • Patent number: 4893826
    Abstract: A mobile support device for a handicapped person and rollable on a reaction surface, the mobile support device comprising first and second substantially parallel planar frame sections oriented in spaced relationship to define a region therebetween, the lower portion of said frame sections defining a base, a back support portion spanning the region and coupled with the first and second frame portions, a seat spanning the region with at least a front portion thereof pivotable relative to the first and second frame portions and a wheel assembly mounted on the base so as to engage the reaction surface.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: January 16, 1990
    Assignee: Canhart Industries, Inc.
    Inventors: Adele E. Ward, J. R. Kingsley Ward, Kevin R. Lunau, Jeffrey D. Stringer, John H. Royce, A. Edward Moore