초록 ▼

An exercising apparatus using an elastic or spring type resistance provides a relatively constant controlled resistive force throughout an entire exercising stroke. In the exemplary embodiments, a multiple pass pulley arrangement attached to elastic rubber straps provides tension on a cable that is

An exercising apparatus using an elastic or spring type resistance provides a relatively constant controlled resistive force throughout an entire exercising stroke. In the exemplary embodiments, a multiple pass pulley arrangement attached to elastic rubber straps provides tension on a cable that is threaded through the multiple pulleys and extends at either end through openings in an elongated housing. An external hand grip is secured to one end of the cable to be grasped or otherwise engaged by the user and the other end can be adjustably secured in one of a series of detent stops along the length of the housing to set various resistive levels. The housing is secured at each end with an eccentrically placed swivel that facilitates free lateral movement in performing the exercise stroke.

대표청구항 ▼

An exercise apparatus comprising: base means; resistance means having a fixed portion held stationary relative to the base means and a movable portion capable of being displaced from said fixed portion against an elastic reactive force; at least two primary semblant pulley means carried with the mov

An exercise apparatus comprising: base means; resistance means having a fixed portion held stationary relative to the base means and a movable portion capable of being displaced from said fixed portion against an elastic reactive force; at least two primary semblant pulley means carried with the movable portion of the resistance means; at least one secondary semblant pulley means mounted to the fixed portion of the resistance means at a location spaced from the primary pulley means; a flexible force transmitting member threaded between the primary and secondary pulley means to engage one of the primary pulley means, one of the secondary pulley means and another of the primary pulley means, in sequence; the force transmitting member having a first end held stationary relative to the base means and a second end actuable in tension by a user during an exercise to draw the primary pulley means toward the secondary pulley means and thereby stress the resistance means against said elastic force, said second end of the force transmitting member being actuable from a start condition to a subsequent extended condition and retracting toward the start condition upon release; means for limiting said retraction so that the force transmitting member is tensioned by the resistance means in the start condition to provide a pre-selected range of resistive force during an exercise; and means for adjusting the tension of the force transmitting member in the start condition, and thus the range of resistive force during an exercise, by adjusting the effective length of the force transmitting member, said tension adjusting means comprises means for adjusting said efective length at the first end of the force transmitting member.