Patent ID: 9649527
Date: 2017-05-16
CPC Classifications: A63B

Claim:
1. An exercise machine, comprising: a frame having a first end and a second end; a first end platform attached to the frame near the first end; a second end platform attached to the frame near the second end; a platform movably positioned upon the frame, wherein the platform is adapted to be movable in a reciprocating manner along at least a portion of an axis extending between the first end and the second end; wherein the first end platform, the second end platform and the platform each have an upper surface, wherein the upper surfaces for the first end platform, the second end platform and the platform are on or near a common plane; a plurality of pulleys rotatably supported upon the frame, wherein the plurality of pulleys are parallel to one another; and a plurality of tension devices each having a first connecting end attached to the frame and a second connecting end opposite of the first connecting end, wherein the second connecting end is adapted for selectively connecting to the platform; wherein the plurality of tension devices are each comprised of an elongated elastic object, wherein the plurality of tension devices jointly provide a resistance to movement of the platform in a first direction, wherein a level of the resistance is determined by the number of the plurality of tension devices operatively engaged with the platform, wherein the resistance is increased by operatively engaging additional tension units to the platform, wherein the plurality of tension devices connected to the platform stretch when the platform is moved in the first direction and wherein the plurality of tension devices connected to the platform contract when the platform is moved in a second direction that is opposite of the first direction, wherein as the platform moves in the first direction the level of the resistance is increased, and wherein the plurality of tension devices are wrapped around at least a portion of the plurality of pulleys.