Patents Assigned to LiftAire
  • Patent number: 5704881
    Abstract: A counterbalancing assembly reduces the weight of an exercising person by pulling the exercising person upwardly. The counterbalancing assembly includes a monolithic support structure which is secured to a base. A cantilever support extends out from the top of the monolithic support structure. A cable extends from the top of the monolithic support structure, down through a linear actuator, and back up through the monolithic support structure to the cantilever support. The cable extends down from the end of the cantilever support to a position suitable for an exercising person to comfortably exercise on a piece of exercising equipment. A spring at the fixed end of the cable provides an unloading force accommodating to the exercising patient movement and dampens sudden movements created by the exercising person. A linear actuator is used to adjust the length of the cable extending down from the cantilever support and to tension the spring.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: January 6, 1998
    Assignee: LiftAire
    Inventor: Robert H. Dudley