Exercising device having operably interconnected primary and sec

Details Exercising device having operably interconnected primary and sec Exercising device having operably interconnected primary and sec

1978-03-09

1980-01-15

Pinkham, Richard C.

Undertaking

272134, 272143, 272DIG4, A63B 2100

Patent

active

041835204

ABSTRACT:
A physical exercise device is comprised of an L-shaped main pivot arm which is pivotally connected intermediate its ends to one end of a support frame, and has pivotally attached to the distal extremity of its horizontal leg a secondary pivot arm. A lever arm, which is pivotally connected to the opposite end of the frame, is interconnected intermediate its ends by a piston cylinder counterbalancing unit to the frame below the main pivot arm, and a cable interconnects the free extremity of the lever arm and the free end of the secondary pivot arm. The cable medially passes over a first set of pulleys located near the lower end of the vertical leg of the main pivot arm, and a second set of pulleys located on the support frame adjacent to the first set, so that when the main pivot arm is rotated with respect to the frame, or when the secondary pivot arm is rotated with respect to the main pivot arm, the cable is pulled therealong, thereby causing the lever arm to be rotated downwardly against the resistance of the counterbalancing unit. The counterbalancing unit is slidably mounted on the lever arm and an adjustment system allows its relative position to be changed. As a result, the exercising force can be adjusted to suit the user.

REFERENCES:
patent: 2825563 (1958-03-01), Lawton
patent: 3558131 (1971-01-01), Dragon
patent: 3850430 (1974-11-01), Hamilton
patent: 3902717 (1975-09-01), Kulkens
patent: 3976058 (1976-08-01), Tidwell

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