초록 ▼

A weight exercise machine comprising a cable and sheave system via which the user operates a stack of weights by grasping pulls. The pulls are attached to free ends of the cable whereby the cable is untethered on the machine frame. The untethered ends pass through respective sheave assemblies which

A weight exercise machine comprising a cable and sheave system via which the user operates a stack of weights by grasping pulls. The pulls are attached to free ends of the cable whereby the cable is untethered on the machine frame. The untethered ends pass through respective sheave assemblies which are vertically adjustable on the machine frame and the cable is guided by a system of pulleys for an operative engagement with the weight stack. The weight stack is mounted on a separate rack frame which is adjustably inclinable on the machine frame. The weight stack is arranged for operation along the length of the rack frame so that as a consequence, the resistance encountered by the user when operating the machine is a function of the inclination of the rack frame. A power device such as a motor-drive ball screw and nut may be used to adjust the inclination of the rack frame. An optional feature comprises a power seat which has a foot rest containing control switches for operating the adjustment mechanism. Plural embodiments of sheave assemblies are also disclosed, and the sheave assemblies can be made power adjustable as well.

대표청구항 ▼

In a cable exercise machine having frame means, a system of sheaves on said frame means, cable means trained by said system of sheaves, load resistance means operatively coupled with said cable means, sheave assembly means adjustably positionable on said frame means providing guidance of said cable

In a cable exercise machine having frame means, a system of sheaves on said frame means, cable means trained by said system of sheaves, load resistance means operatively coupled with said cable means, sheave assembly means adjustably positionable on said frame means providing guidance of said cable means from said system of sheaves to a user, said cable means having an operative coupling with said load resistance means by at least one sheave, said cable means terminating in two untethered ends for cooperative association with the user via which the user can exercise against said load resistance means by operating said cable means, the improvement which comprises said sheave assembly means having an operative engagement with said cable means between said system of sheaves and said untethered ends of said cable means, said sheave assembly means comprising sheaves for training said cable means adjacent its untethered ends, said sheave assembly means being adjustably positionable on said frame means without affecting the amount of slack in said cable means, said sheave assembly means comprising two sheave assemblies spaced apart from each other on said frame means, each sheave assembly training said cable means adjacent a corresponding one of its untethered ends, said two sheave assemblies being each individually positionable on said frame means to respective desired positions of adjustment, and that portion of said cable means which is trained by one of the sheave assemblies passing from that one sheave assembly to said system of sheaves in a particular direction and the portion of said cable means is trained by the other sheave assembly passing from said other sheave assembly to said system of sheaves in a direction which is opposite the direction that the first-mentioned portion of said cable means passes from said one sheave assembly to said system of sheaves, in which said two sheave assemblies are vertically positionable on said frame means and in which that portion of said cable means which is trained by said one sheave assembly passes from that one sheave assembly to said system of sheaves in a downwardly direction and the portion of said cable means which is trained by the other sheave assembly passes from said other sheave assembly to said system of sheaves in an upward direction.