Mechanical weightlifting machine
OwnerRichard Zachary Polidiinventor
Life of this patent
Estimating the term…
Abstract
A mechanical weightlifting machine in which the machine has a support structure with an elevated pivot having a pivot axis and an articulating mechanism engaging the pivot. The articulating mechanism having at least one articulating structure with a lever arm that has a depending link connected to the weight being used by the weightlifter. The articulating structure having an adjustment mechanism with a displaceable connection device connected to a counterweight. The adjustment mechanism having means for moving the displaceable connection device relative to the pivot axis and actuation means for actuating the means for moving, in order to vary the effective weight removed from or applied to the weight being used by the weightlifter.
Claims20
A mechanical weightlifting machine, comprising:
- (i) a support structure having an elevated pivot with a pivot axis;
- (ii) an articulating mechanism engaging the pivot, the articulating mechanism having at least one articulating structure, the articulating structure having a lever arm, wherein the lever arm has a distal end on one side of the pivot with a connection device from which a depending link member is suspended, the depending link member having and end with means for engaging a bar, the articulating structure having an adjustment mechanism with a displaceable connection device with an effective connection point locatable on the opposite side of the pivot, the displaceable connection device having a counterweight;
- (iii) means for moving the displaceable connection device relative to the axis of the pivot wherein the leverage of said counterweight directed to said lever arm is adjusted;
- (iv) actuation means for actuating said means for moving;
- and
- (v) a control device remote from the adjustment mechanism with control means for controlling said actuation means.
A weightlifting machine which comprises:
- (i) a supporting pivot having a pivot axis;
- (ii) a lever arm having front and rear ends, the lever arm being journaled about said pivot axis intermediate said front and rear ends;
- (iii) a weight supporting member having top and bottom ends, said top end being connected from the front end of said lever arm, and means at the bottom end of said weight supporting member for engaging a weight;
- (iv) displaceable means for attaching a counterweight to a part of said lever arm;
- (v) means for moving the location of said displaceable means for attaching along the lever arm between said pivot axis and said rear end;
- and
- (vi) an actuator for actuating said means for moving.
Dependencies are inferred from the claim text.