Patents by Inventor Douglas A. Kelsey

Douglas A. Kelsey 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).

  • Ball bat shock damper
    Patent number: 5624114
    Abstract: A resiliently compressible and stretchable sleeve has an opening at one end adapted to closely fit around a handle of a ball bat, and an interior adapted to closely fit around an enlarged end knob which terminates at the handle. The sleeve is positioned to cover the end knob to cushion the batter's hand from vibrations in the end knob and the sleeve can be readily removed from and replaced on the bat. One or more sleeves, each having a hole extending completely through it, can be positioned on the handle of the bat to provide a reference for gripping the handle away from the end knob.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: April 29, 1997
    Inventor: Douglas A. Kelsey
  • Handle for a tethered ball
    Patent number: D342101
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: December 7, 1993
    Inventor: Douglas A. Kelsey