Patents by Inventor Thomas Fetterman

Thomas Fetterman 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: 5178176
    Abstract: A crutch tip for installation on the lower end of a crutch shaft for engagement with an underlying supportig surface. The crutch tip includes a first material having a first coefficient of friction with respect to the supporting surface and a second material having a second coefficient of friction with respect to the supporting surface. The crutch tip generally includes a radial outer skirt, a ring portion radially inwardly of the skirt, and a center portion. The ring portion may be formed from the first material and the outer skirt may be formed from the second material.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: January 12, 1993
    Inventor: Thomas Fetterman
  • Patent number: 4881564
    Abstract: This invention is concerned with a crutch tip including an integrally fabricated tubular receiver for a crutch shaft and having on its lower end an enlarged depending skirt. Firmly secured conformably within the skirt are a rigid plate immediately beneath the receiver, an absorption or damping pad immediately beneath the plate, and a ground engageable tread piece immediately beneath the absorption pad, which tread piece includes depending projections for receiving and flexing about small articles on the ground while maintaining traction with the ground.
    Type: Grant
    Filed: October 22, 1987
    Date of Patent: November 21, 1989
    Inventor: Thomas Fetterman