초록 ▼

A mechanical weightlifting machine for use with free weights 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 projecting lever arms connected to the pivot with depending rod mem

A mechanical weightlifting machine for use with free weights 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 projecting lever arms connected to the pivot with depending rod members to which the free weights are connected, the articulating mechanism having a counterweight on a lever arm with one end connected to the support structure and another having a link connected to a displaceable connection member on the articulating mechanism, the machine having a user controlled actuator to displace the displaceable connection member to vary the effective weight applied to or removed from the free weights.

대표청구항 ▼

[ What is claimed is:] [1.] A mechanical weightlifting machine for use with free weights comprising:a support structure having an elevated pivot with a pivot axis;an articulating mechanism engaging the pivot having at least one articulating structure with a projecting lever arm connected to the pivo

[ What is claimed is:] [1.] A mechanical weightlifting machine for use with free weights comprising:a support structure having an elevated pivot with a pivot axis;an articulating mechanism engaging the pivot having at least one articulating structure with a projecting lever arm connected to the pivot for limited pivot about the axis of the pivot, wherein the projecting lever arm has a distal end on one side of the pivot with a connection device having a depending link member with an end having means for engaging a free weight, and, wherein the articulating structure has an adjustment mechanism with a displaceable connection device having a counterweight locatable on the opposite side of the pivot;actuation means engaging the connection device for displacing the connection device relative to the axis of the pivot wherein the leverage of the connected counterweight directed to the projecting lever arm is adjusted; and,a user control remote from the adjustment mechanism with control means for actuating the adjustment mechanism and displacing the connection device.