Patents by Inventor Clifford D. Mathews

Clifford D. Mathews 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).

  • Tree shaker force regenerator
    Patent number: 4998402
    Abstract: A rotational force counterbalancing device comprising a weight linearly moveable between two impact points and mounted on a fruit tree shaker to dampen the attempt of an operating shaker to rotate in the direction of the aligned weights of the shaker. As the shaker attempts to move in one direction, the weight of the counterbalancing device moves in the opposite direction.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: March 12, 1991
    Inventor: Clifford D. Mathews