Patents by Inventor Earl A. Schule

Earl A. Schule 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).

  • Trailer coupler safety cable device
    Patent number: 5072964
    Abstract: A safety cable trailer coupler having a steel cable loop for encircling the shank of a ball hitch. The cable is fed through a slidable sleeve and the ends of the cable are pressed into a ferrule, and the ferrule may be bolted to a trailer tongue immediately behind the trailer coupler.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: December 17, 1991
    Inventor: Earl A. Schule
  • Drill guide
    Patent number: D268165
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: March 8, 1983
    Inventors: Reino L. Perry, Earl A. Schule
  • Three axes hitch
    Patent number: D269175
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: May 31, 1983
    Assignee: Earl A. Schule
    Inventors: Reino L. Perry, Earl A. Schule