Patents by Inventor Ralph M. Roatcap

Ralph M. Roatcap 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).

  • Three point tractor hitch boom attachment
    Patent number: 4067471
    Abstract: A tractor attachment comprised of a lifting boom hinged to a base carried by an A-frame or the like as part of the three point hitch system that is moveable vertically and adjustable as to height. The boom swings upward by means of an extensible actuator operable between the base and a lever that positions an adapter on which the boom is replaceable to receive a drop line or the like at its terminal end.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: January 10, 1978
    Inventor: Ralph M. Roatcap