Patents by Inventor Robert M. Andreoli

Robert M. Andreoli 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: 4143873
    Abstract: A practice game racket having a handle and a peripheral frame attached thereto. The frame is provided with a slidable insert defining an overall practice impact area for a game ball and in turn having a smaller generally centrally disposed second area in the form of an opening therethrough such that the proper execution of the preferred practice stroke will enable the game ball to entirely pass through said opening without impacting the racket and in this way demonstrate the correct execution of a preferred practice stroke in a dramatic manner. A series of inserts may be utilized, each having an opening of decreasing size such that progressive replacement with inserts having smaller openings will enable a player to provide increasingly difficult practice sessions.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: March 13, 1979
    Inventor: Robert M. Andreoli