Patents Assigned to Douglas W. Clark
  • Exercising and stretching a person's finger joints
    Patent number: 4961568
    Abstract: An apparatus which permits the index and middle finger of the hand to be spread apart in a manner to stress the finger joints. The joint may then be exercised while in its stressed condition so that the joint is strengthened at the same time as it is made more flexible. The object of the invention is to improve the flexibility and stretch of the finger muscles of the index and middle finger of the hand so that a person utilizing the exerciser may practice the split finger baseball pitch.
    Type: Grant
    Filed: April 4, 1989
    Date of Patent: October 9, 1990
    Assignee: Douglas W. Clark
    Inventors: Douglas W. Clark, Steven Zabel