Patents by Inventor David G. Sprager

David G. Sprager 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).

  • Apparatus and method for analyzing bowling technique
    Patent number: 6110052
    Abstract: An apparatus including a bowling lane, pins positioned on one end of the bowling lane, a bowling ball adapted to be launched down the bowling lane toward the bowling balls, and a spin detector for determining a spin rate of the bowling ball as the bowling ball travels down the bowling lane. An angle detector detects the angle of the spin axis of the bowling ball. The apparatus also measures and displays information relating to ball velocity, ball position, coefficient of friction, launch angle, and entry angle.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: August 29, 2000
    Assignee: American Bowling Congress
    Inventors: David G. Sprager, Larry M. Vezina, Daniel R. Speranza, James M. Donovan