Exercise devices – User manipulated force resisting apparatus – component... – Having common force transmitting support frame for user and...
Patent
1997-06-17
1998-09-22
Apley, Richard J.
Exercise devices
User manipulated force resisting apparatus, component...
Having common force transmitting support frame for user and...
482 97, 482137, 482139, A63B 2106
Patent
active
058107010
ABSTRACT:
The invention relates to a shoulder press machine having a seat, a backrest and fixed framework at the top of which a carriage is mounted. The carriage has a pair of downwardly and forwardly extending, diverging lever arms which are tied together and moved upwardly and downwardly along a major horizontal axis mounted to the framework behind the backrest and a minor horizontal axis offset behind and parallel to the major horizontal axis. As the lever arms are moved together upwardly, they are simultaneously swung inwardly about a pair of parallel, angular pivot axes, the swinging motion being transferred via a pair of transfer links to pivot a pair of sleeves about the minor horizontal axis. As a result of these linkages, a shoulder press machine is provided in which an exerciser's hands rotate or supinate naturally through approximately 20.degree.-30.degree. as the lever arms are pushed upwardly. The inventive machine much more easily accommodates the natural musculoskeletal make-up of the human body without stress to the shoulder joints.
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Cybex Strength Systems, brochure, May 1995.
Ellis Patrick D.
Malicki Fred A.
Apley Richard J.
Hwang Victor K.
Northland Industries, Inc.
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