Patents by Inventor Elmer L. Goetzelman

Elmer L. Goetzelman 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).

  • Folding wheelchair
    Patent number: 4934722
    Abstract: A folding wheelchair that employs a pair of side frames, a rear wheel associated with each frame and a forward caster wheel associated with each frame, a pivotable back with a releasable lock to retain the chair in an open usable position or foldable nonusable position, a wheel shifting plate and link apparatus to effect a folding of the chair to a non-use width as well as allowing the wheels to shift and encompass the frames therebetween within the diameter of the wheels.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: June 19, 1990
    Inventor: Elmer L. Goetzelman