Exercise devices with an adjustable lever arm

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272 72, 272130, 272134, 272DIG4, A63B 2102

Patent

active

047579935

ABSTRACT:
Exercise devices with an adjustable handle and lever arm are provided for exercising the major muscle groups individually against a selected resistance. The exercise devices include a frame with a base and a leg, and a lever support is pivotably attached at one end and is adjustably attached to the leg at the selected distance from the lever support pivot. An exercise handle with a handle lever is connected to the lever support at a handle lever pivot and a resistance lever is also pivotably connected to the lever support. By adjusting the attachment of the lever support to the leg, the lever pivots are placed at the desired height from the base. The resistance lever is connected to a resistance source by a flexible connector which transmits the resistance from the resistance source in the general direction originating from the lever support pivot to the resistance lever. An engagement pin selectively engages the connector to the resistance lever at specific points along the resistance lever to allow the user to select a particular resistance at the handle. Rotation of the resistance lever is opposed by a resistance transmitted along and parallel to the connector which acts on the resistance lever at the engagement pin. An additional connector fixes the desired angle between the resistance lever and the handle lever to transmit force between the levers.

REFERENCES:
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patent: 3708167 (1973-01-01), Potgieter
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patent: 4452448 (1984-06-01), Ausherman
patent: 4582320 (1986-04-01), Shaw
patent: 4602780 (1986-07-01), Gall
patent: 4603857 (1986-08-01), Chipman et al.
patent: 4618140 (1986-10-01), Brown
patent: 4634115 (1987-01-01), Hawkins

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