Patents by Inventor John R. Marine, Sr.

John R. Marine, Sr. 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: 6533042
    Abstract: A three-point hitch adapter designed with a bell crank, for use on tractors. This bell crank operated hitch adapter provides for easier transfer and adjustability of implements used on tractors. The hitch adapter includes a horizontal cross bar attached to two vertical tubular members. The horizontal bar includes a rectangular centerpiece whereby two tubular members are telescopically inserted and retracted by lateral movement all the while engaged within the centerpiece. The centerpiece includes a bell crank that allows the members to be extended laterally to accommodate the implement. The vertical members have T-shaped locking means with a compression spring to help keep the implement in place at the bottom of each vertical tubular member. All vertical and horizontal adjustments can be made while the adapter is still attached to the tractor.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: March 18, 2003
    Inventors: John R. Marine, Sr., John R. Marine, Jr.