Patents by Inventor Earl Stump

Earl Stump 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).

  • Mobility assistance apparatus
    Patent number: 8020881
    Abstract: A mobility assistance apparatus having an elongated frame. The elongated frame includes a pair of disparate sized wheels coupled to each end of an elongated frame. A pivoting joint is provided longitudinally in the elongated frame which allows the second wheel to track the first wheel in a lateral arc about the along a longitudinal centerline of the first wheel.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: September 20, 2011
    Inventors: Earl Stump, Frank Penner
  • Mobility Assistance Apparatus
    Publication number: 20100117326
    Abstract: A mobility assistance apparatus having an elongated frame. The elongated frame includes a pair of disparate sized wheels coupled to each end of an elongated frame. A pivoting joint is provided longitudinally in the elongated frame which allows the second wheel to track the first wheel in a lateral arc about the along a longitudinal centerline of the first wheel.
    Type: Application
    Filed: November 11, 2008
    Publication date: May 13, 2010
    Inventors: Earl Stump, Frank Penner