Patents by Inventor Robert L. Leonhardt

Robert L. Leonhardt 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: 4741535
    Abstract: A golf putter for use on a regulation golf course having weighted toe and heel portions and alignment shafts projecting rearward from the toe and heel of the putter. The alignment shafts may be about 1 to about 6 inches in length and about 1/3 to about 1 inch in width. The alignment shafts are perpendicular to the ball striking surface of the club head and are parallel to each other. The bottom surface of each of the alignment shaft slope slightly upward in a arc shaped line to allow striking of the golf ball more effectively. The distance between the center of the two shafts is approximately equal to the diameter of a golf hole. The putter also has a center alignment line located at the approximate center of the weight distribution of the head of the putter. This line, along with the two alignment shafts, assists the golfer in aligning his or her putt and reduces the tendency of the putter to rotate upon striking a ball off center.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: May 3, 1988
    Inventor: Robert L. Leonhardt