Resistance training machine

Details Resistance training machine Resistance training machine

A - Human Necessities

63

B

A63B 21/062 (2006.01) A63B 21/06 (2006.01) A63B 24/00 (2006.01) A63B 21/00 (2006.01)

Patent

CA 2107545

An exercise device having a coupling member movable by the user between rest and end limit of travel positions, a constant weight, and a weight-lifting arm operatively connected to the weight and movable through a vertical plane to move the weight between rest and elevated positions corresponding to the rest and end limit positions of the coupling member. The device further includes a pivot arm pivotally movable through a pivot arm plane having a user- selectable angular orientation to transmit a selectable force between the coupling member and weight dependent upon the selected angular orientation. A link arm is connected between the pivot arm and the weight-lifting arm to transmit force therebetween. The pivot arm is pivotally attached to a rotatable pivot arm support which is selectively rotated by a lever arm moved by an electric motor and screw arrangement to selectively change the angular orientation of the pivot arm plane. The pivot arm plane is movable into a non-loading horizontal orientation where movement of the pivot arm transmits substantially zero force between the coupling member and the weight-lifting arm. The pivot arm plane is adjustable to produce a true zero weight setting on the coupling member. The exercise device provides infinitely variable adjustment of the loading on the coupling member within the range of possible weight settings even while an exercise is in progress.

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