Patents by Inventor Eddie A. Stewart

Eddie A. Stewart 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: 4461477
    Abstract: The method and apparatus for improving the performance of a batter. The apparatus includes sequencing lights (38) which are representative of a ball moving toward an impact zone. Further included are light indicia (46 and 48) which inform a batter that the pitched ball will either be a ball or a strike so that the batter may determine whether or not he should swing the bat. Also included are means to generate an electrical signal to indicate that the strike light (46) is illuminated. First and second light beams (18 and 20) are provided which pass through the ball/bat impact zone and are located at selected and known distances apart such that the bat swing through the impact zone will sequentially interrupt both first and second beams (20 and 18). First and second sensors (22 and 24) are also located for receiving and sensing the presence of the first and second beams and provide second and third electrical signals, respectively, if the beams are interrupted.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: July 24, 1984
    Inventor: Eddie A. Stewart