Patents by Inventor Robert M. Gibbon

Robert M. Gibbon 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).

  • Method of forming spark plug boots
    Patent number: 4551293
    Abstract: A method of forming a spark plug boot which utilizes an extrusion process. An elastomeric tube is extruded, then heated to a partially cured condition. The tube is then cut into individual pieces. The individual pieces are stretched over a pin which has at least one external shoulder. The pin and tube are then heated to a temperature and for a time to provide a final cure. The tube is stripped from the pin. The compression set and shrinkage results in an internal shoulder in the tube, allowing it to serve as a spark plug boot.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: November 5, 1985
    Assignee: Jamak, Inc.
    Inventors: Larry F. Diehl, Jr., Robert M. Gibbon