Patents Assigned to Roy S. Robinson
  • Variable reactive force exercise device
    Patent number: 4602373
    Abstract: A variable, reactive force, exercise device which employs a generator with variably positionable commutation brushes and a short circuit load therebetween, to supply a variable opposition force for an operator of the exercise device to overcome.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: July 22, 1986
    Assignee: Roy S. Robinson
    Inventor: Walter Dorfman