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Exercise machinery convertible for use by wheelchair-seated exercisers
| Details |
Inventors: Johns, George A.;
Assignee: Nautilus Sports Medical Industries, Inc. (Park Central, TX)
Primary Examiner: Apley; Richard J.
Assistant Examiner: Flaxman; Howard
Attorney, Agent or Firm: Hubbard, Thurman, Turner, Tucker & Harris
A variety of selectively variable resistance exercise machines, of the type in which the exerciser is seated while grasping and forcibly moving a hand operable force input portion of the machine, are modified to permit their use by both able bodied and physically challenged, wheelchair-seated exercisers. To permit this alternate usage of the machines, each is provided with a movable, height adjustable seat structure which may be selectively pivoted between an able bodied exerciser use position, and a physically challenged exerciser use position. With the movable seat structure in this latter position, a wheelchair-confined exerciser may move the chair into the space previously occupied by the seat structure to thereby permit the exerciser to conveniently reach and operatively manipulate the machine's force input portion. Differently sized floor ramp sets are provided to effect wheelchair height adjustment, and stabilizing straps are provided to releasably secure the exerciser and his wheelchair in an operative position relative to the machine. One of the machines has a unique "reverse pullover" input motion designed to simulate wheelchair ambulation motion to thereby strengthen the exerciser's muscles used in forcibly rotating the wheels of the chair. Additionally, each of the machines may be provided with a specially designed double pin progressive resistance weight stack having differently sized weight elements and a central weight element connection rod which may be lifted and lowered by the physically challenged exerciser without moving any of the individual weight elements. |
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DETAILED DESCRIPTION In carrying out principles of the present invention, in accordance with preferred embodiments thereof, several representative selectively variable resistance type exercise machines are provided, each of which is rapidly and easily convertible between first and second orientations that respectively enable the machine to be conveniently operated by an able bodied exerciser or a physically challenged, wheelchair - seated exerciser.
Each machine basically comprises a floor supported, vertically extending support frame structure having a forwardly opening exerciser entry area.
Pivotally secured to the frame structure, and positioned operatively adjacent such entry area, is a hand operable force input portion of the machine which is provided with a pair of handle portions that may be grasped by the exerciser and pushed or pulled to pivot the input portion.
Pivotal motion of the input portion is resisted with a yielding, selectively variable force by a vertically movable, multi-element weight stack carried by the frame structure and operatively connected to the force input portion by a conventional chain, sprocket and cam system or the like.
The rapid conversion of each machine between its able bodied exerciser use orientation and its wheelchair seated exerciser use orientation is provided by means of a unique height adjustable seat mechanism that is carried by the frame structure for movement relative thereto between an able bodied user position and a wheelchair-seated user position.
Suitable latch means are provided for releasably locking the movable seat mechanism in a selected one of its two positions.
With the seat mechanism in its able bodied user position, a padded seat portion thereof is operatively positioned generally within the exerciser entry area in a manner such that the able bodied exerciser may walk into the entry area, adjust the height of and sit upon the seat to permit him to conveniently grasp and appropriately manipulate the force input handles of the machine
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Exercise Devices 
