Leg exercise machine

Details Leg exercise machine Leg exercise machine

1991-01-28

1992-04-21

Bahr, Robert

Exercise devices

User manipulated force resisting apparatus, component...

Having common force transmitting support frame for user and...

482100, A63B 2304

Patent

active

051060817

ABSTRACT:
A leg exercise machine includes a frame having a seat connected thereto for supporting a user in a seated position thereon. A foot engaging member is adapted for engaging the feet of a user and receiving force from the user leg. The foot engaging member is pivotally mounted on the frame by a four-bar linkage which includes first and second lever arms pivotably mounted on the frame. The pivotal mounting of the lever arms provides for back and forth movement along a path of travel and about an instantaneous (changing) axis of rotation for changing the angle of inclination of the foot engaging member so that a force substantially normal to the foot engaging member is directed substantially up the leg and tibia during corresponding movement of the user. The second lever arm is operatively connected to a weight stack for transmitting the pivotal back and forth movement of the leg engaging member to movement of the weight stack to thereby exercise the legs of a user.

REFERENCES:
patent: 4254949 (1981-03-01), Brentham
patent: 4500089 (1985-02-01), Jones
patent: 4502681 (1985-03-01), Blomqvist
patent: 4511137 (1985-04-01), Jones
patent: 4838548 (1989-06-01), Maag
patent: 4872670 (1989-10-01), Nichols
patent: 4883270 (1989-11-01), Maag

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