Patents by Inventor William D. Bruce

William D. Bruce 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).

  • Sports training apparatus
    Patent number: 4647042
    Abstract: A sports training device which can be utilized to teach consistency in motion constructed of a support-base having a vertically extending pole with a perpendicular arm to which a ball is suspended by a flexible line and having positioning plate adjustably attached to the support base so as to protrude at a desired position from the support base. The support-base has cavities into which weights may be inserted and locked in place.
    Type: Grant
    Filed: July 25, 1985
    Date of Patent: March 3, 1987
    Assignee: Rally Mate Inc.
    Inventor: William D. Bruce