Patents by Inventor Mark Eberhage

Mark Eberhage 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).

  • Drive configuration with differential driving surfaces
    Patent number: 5860339
    Abstract: A wrenching member includes at least two spaced-apart and substantially oppositely facing drive surfaces, each of which has a roughened region and an unroughened region thereon, with the roughened region being disposed adjacent to one end of one of the drive surfaces and adjacent to the other end of the other drive surface so as to afford a differential driving arrangement which exerts a greater frictional wrenching force in one direction than in the opposite direction.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: January 19, 1999
    Assignee: Snap-on Technologies, Inc.
    Inventors: Frank Mikic, deceased, Mark Eberhage, Jeffrey H. Hoff