Patents by Inventor Mark Lewis Donnelly

Mark Lewis Donnelly 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: 5952921
    Abstract: A system for alerting a golfer when the golfer has moved too far away from his golf club. One or more clubs are provided with transmitters which transmit on a specific frequency and may contain digital encoding. A common receiver is used to detect the signal from one or a plurality of transmitters. When the distance between the transmitter, attached to the golf club, and the receiver, carried with the golfer, is greater than a threshold distance, the receiver provides an alert to the golfer. The present invention can also include an audible or visual signal associated with the club to assist the golfer in locating the club when he returns to retrieve the club.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: September 14, 1999
    Inventor: Mark Lewis Donnelly