초록 ▼

A progressive resistance mechanism suitable for use with a weightlifting machine as provided having a base, a plurality of spaced vertical guide members, a carriage vertically reciprocating along the guide members and a plurality of weight stacks restingly supported by the base. An apertured selecto

A progressive resistance mechanism suitable for use with a weightlifting machine as provided having a base, a plurality of spaced vertical guide members, a carriage vertically reciprocating along the guide members and a plurality of weight stacks restingly supported by the base. An apertured selector post is slidably disposed through each stack and has a first pin for attaching a selected subset of weights from the stack for upward movement. A second pin on each selector post is provided for locking a slidable collar at selected positions on the post above the carriage. The collars may thus be set at different distances above the carriage. The upward-travelling carriage engages each collar in sequence to serially lift the associated weight stacks. The user thereby experiences progressively increasing weight resistance during the course of a single repetition.

대표청구항 ▼

Progressive resistance mechanism for a weight-lifting machine comprising: (a) a base; (b) a plurality of spaced vertical guide members upstanding from the base; (c) a carriage adapted for vertically reciprocative motion along said vertical guide members; (d) a plurality of weight stacks on said base

Progressive resistance mechanism for a weight-lifting machine comprising: (a) a base; (b) a plurality of spaced vertical guide members upstanding from the base; (c) a carriage adapted for vertically reciprocative motion along said vertical guide members; (d) a plurality of weight stacks on said base beneath the carriage, each stack including a plurality of stacked weights; (e) an upright vertically movable selector post for each stack extending from below the lowermost weight of the stack to above the carriage; (f) means for connecting the lowermost weight of a selected number of weights to said post; and (g) carriage engaging means on said post above the carriage for engagement by said carriage on upward movement of said carriage, the carriage engaging means on at least one post being vertically adjustable with respect to said post, the independent adjustment of the carriage engaging means on said post resulting in selected progressive sequential weight resistance during a single user repetition.