Patents by Inventor Donald J. Swift

Donald J. Swift 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).

  • Multi-purpose drum ball joint simulator
    Patent number: 5477768
    Abstract: A rubber or other elastomeric material ball is mounted on a drum stick shaft to provide a ball grip to be held in the palm of the hand as the ball of a ball and socket joint. This balances the drum stick and provides enhanced performance. The ball may also be used on the end of the stick shaft as a mallet conversion of the stick.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: December 26, 1995
    Inventor: Donald J. Swift
  • Drumstick grip accessory
    Patent number: D736849
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: August 18, 2015
    Inventor: Donald J. Swift