Patents by Inventor Eugene F. Carrigan

Eugene F. Carrigan 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).

  • Patent number: 4129931
    Abstract: Apparatus is disclosed to remove a propeller force fit upon a tapered shaft having screw threads projecting from the propeller hub. A cylindrical nut with an inner flange is screwed on the threads. The flange provides a stop located a short distance from the propeller hub thereby limiting movement of the propeller down the tapered shaft at the instant it is broken free. A cylindrical jack is placed about the nut and adjacent an outermost puller plate which is stud bolted to the propeller hub. Thus, the jack can move the plate in a direction pulling said propeller down the tapered shaft until it contacts the stop.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: December 19, 1978
    Assignee: Jeffboat, Incorporated
    Inventor: Eugene F. Carrigan