Patents by Inventor Donn B. Greiner

Donn B. Greiner 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: 4558692
    Abstract: A motor driven leg exerciser, for passive exercising of the knee, with foot and hand operated override controls is disclosed. The exerciser has an adjustable framework, an adjustable leg support, and a movable footrest which includes an override switch, a motor with housing, and controls for user and therapist. In operation, the motor drives a chain driven rod back and forth in an arc to move the leg support. As the rod reaches each end of its arc, it activates a directional switch which in turn stops the motor, causes the device to pause for a predetermined length of time, and reverses the direction of the rod. This series of motor stoppage, pause and reversal of direction are also activated by a pressure operated switch in the footrest, and by a hand held control.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: December 17, 1985
    Inventor: Donn B. Greiner