Patent ID: 7927257

Claim:
An assisted stair training machine comprising: a frame; a stationary platform rigidly attached to the frame to prevent any movement of the stationary platform, the stationary platform having a planar upper surface positioned parallel to a reference plane and at a predetermined distance above the reference plane; a movable platform configured to move with respect to the stationary platform, the movable platform having a planar upper surface and being configured to move from a first position, wherein the planar upper surface of the movable platform is substantially level with the reference plane, to a second position, wherein the planar upper surface of the movable platform is substantially level with the planar upper surface of the stationary platform; and a lifting mechanism configured to move the movable platform, in a vertical direction only, from the first position to the second position and from the second position back to the first position at a predetermined speed; wherein the upper planar surface of the movable platform remains parallel to the reference plane throughout the movement of the movable platform.