Exercise machine for conditioning football players

Details Exercise machine for conditioning football players Exercise machine for conditioning football players

1990-03-29

1991-10-22

Bahr, Robert

Undertaking

272134, 273 55R, A63B 2106

Patent

active

050588842

ABSTRACT:
An exercise machine has a frame with a generally rectangular base and a platform at the rearward end of the base upon which the athlete stands. A horizontal shaft rotatably mounted on a pair of vertical frame members near the forward end of the base has a central sprocket at its center and smaller sprockets at its outer ends. A weight supporting member pivotally connected to a pair of upright frame members extends forwardly therefrom and a selected number of weights are received on the outer end of the weight supporting member. A pivot arm pivotally connected to the upright members extends forwardly therefrom and has an elongate lift arm secured thereto which extends angularly upward and rearward therefrom toward the platform. A hand grip bar at the outer end of the lift arm is positioned a selective distance above the platform has two sets of hand grips for griping the bar in two positions. A first chain wrapped around the central sprocket has its free end connected to the pivot arm and a pair of second chains each wrapped around an outer sprocket in the opposite direction have their free ends connected to the weight supporting member. When the lift arm is raised by an upward force on the hand grip bar, the pivot arm pivots downward pulling the first chain down causing rotation of the central sprocket and outer sprockets which causes the second chains to pivot the weight supporting member upward with the weights at the outer ends thereof resisting the upward force applied to the hand grip bar.

REFERENCES:
patent: 3573865 (1971-04-01), Annas
patent: 4344619 (1982-08-01), Szabo
patent: 4357010 (1982-11-01), Telle
patent: 4511137 (1985-04-01), Jones
patent: 4621810 (1986-11-01), Cummins
patent: 4627614 (1986-12-01), De Angeli
patent: 4722522 (1988-02-01), Lundoren
patent: 4917379 (1990-04-01), Maag
patent: 4923195 (1990-05-01), Calderone

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