Patents by Inventor Steven L. Christophersen

Steven L. Christophersen 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).

  • Loosening tool for tie rod sleeves
    Patent number: 4512222
    Abstract: The loosening tool includes a U-shaped body with a bore in one of the legs thereof. A shaft is slidably located in the bore and carries a hammer at one end and a reciprocating hammer engaging means at the other end. The hammer and the other leg have surfaces that generally match the surfaces of interconnected threaded members which are to be loosened.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: April 23, 1985
    Assignee: Snap-on Tools Corporation
    Inventor: Steven L. Christophersen
  • Bracket qualifier device
    Patent number: 4489498
    Abstract: The bracket qualifier device comprises a body and first and second legs carried thereby. The first leg is adapted to be inserted into the magnetic probe receptacle of a combustion engine. The second leg carries a foot which mates with a corresponding shaped portion on the bracket which carries the receptacle.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: December 25, 1984
    Assignee: Snap-on Tools Corporation
    Inventor: Steven L. Christophersen