Patents by Inventor Robert D. Jeffrey

Robert D. Jeffrey 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: 4176837
    Abstract: A coin-operable amusement device which provides table equipment and scoring apparatus for arm wrestling contests. For each player there is provided an elbow cup, a fixed handle for the player's free hand, and a touch pad which actuates a scoring indicator. When the losing player's arm is forced down against a touch pad, signal devices operate. In one form the touch pads are depressible for a substantial distance and carry pointers movable along scales which are calibrated in game points. Friction linkages make the pointers remain where deflected. Means are provided to prevent play unless a coin has been inserted into a coin acceptor. One such means comprises a depressible support under each elbow cup, which is locked up in place only when a coin has been inserted. An alternative means is a bar-like blocking element disposed so as to interfere with play when it is raised above the table top. When a coin is inserted, an automatic mechanism lowers the blocking bar out of the way.
    Type: Grant
    Filed: August 1, 1977
    Date of Patent: December 4, 1979
    Inventors: Lawrence W. Jeffrey, Robert D. Jeffrey