Patents by Inventor David F. Kelly

David F. Kelly 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: 5248141
    Abstract: A grip for use on the extending end of the shaft of a golf club is provided with an especially configured array of longitudinally extending grooves which are in direct opposition to the rotation of the golf club about the longitudinal axis of the golf club shaft to resist twisting of the golf club in the golfer's hand resulting from mishitting of a golf ball in an off center location toward the toe or heel of the golf club head. Three sets of longitudinally extending grooves are provided in the portions of the grip gripped by the golfer's left and right hands for the purpose of equalizing the static friction exertion capabilities of those portions of the grip. A first plurality of grooves extends longitudinally more than half the length of the grip. A second plurality of grooves extends longitudinally a distance less than the extending distance of the first plurality of grooves.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: September 28, 1993
    Inventor: David F. Kelly