초록 ▼

An operating bar can be moved between limit positions at least 180°apart, and a sprocket on the axis of motion carries a chain connected to a lever for exerting a near constant reaction force or torque. A bellcrank on the same axis carries weights that provide a variable force or torque on the movab

An operating bar can be moved between limit positions at least 180°apart, and a sprocket on the axis of motion carries a chain connected to a lever for exerting a near constant reaction force or torque. A bellcrank on the same axis carries weights that provide a variable force or torque on the movable bar. The user can assume one position to move the bar in a biceps exercise mode and another position to move the bar in a triceps exercise mode. The bellcrank has two pins to support weights in two angularly related positions to provide a desired force variation for each such exercise mode.

대표청구항 ▼

An exercise machine comprising a frame, an operating bar pivotably mounted in said frame for movement on a first horizontal axis between first and second bar positions at least approximately 180°apart, rotatable means movable with said bar and including a peripheral portion, a tensionable flexible e

An exercise machine comprising a frame, an operating bar pivotably mounted in said frame for movement on a first horizontal axis between first and second bar positions at least approximately 180°apart, rotatable means movable with said bar and including a peripheral portion, a tensionable flexible element having a first end connected to said peripheral portion a lever pivotably mounted in said frame on a second axis spaced from said first axis, the second end of said tensionable element connected to said lever so that rotation of said bar from a first position to a second position raises said lever from a rest position toward an elevated position, means on said lever for supporting one or more weights, eccentric weight supporting pin means coupled to said rotatable means for rotation therewith, said eccentric pin means comprising bicep and tricep pins angularly spaced relative to one another, said bicep pin located below said first axis when said bar is in its first position said tricep pin located below said first axis when said bar is in an intermediate position between said first and second positions.