Patents by Inventor William D. Belisle

William D. Belisle 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).

  • Apparatus for mounting a spiral spring
    Patent number: 5294097
    Abstract: There is provided a two point mounting system for the outside end of a spiral spring. The mounting system induces a torsional load on the outside end of the spiral spring to overcome the tendency of the spiral spring coils to move into a non-concentric position. The mounting system comprises a single piece sleeve which has an elongated slot for contacting the spiral spring on opposite sides and inducing the torsional load.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: March 15, 1994
    Assignee: Hasco Industries, Inc.
    Inventors: H. Jay Thomsen, William D. Belisle, Christopher J. Walter