Patent ID: 8444580

Claim:
A passive exercise assisting device comprising: a left foot support and a right foot support respectively configured to bear a user's left foot and right foot; a drive unit configured to move said left and right supports in a mutually linked manner; and a carrier mounting said left foot support, said right foot support, and said drive unit, wherein said drive unit being configured to reciprocate said left and right foot supports in a forward/rearward direction respectively along individual travel paths, while varying a lateral distance between said left and right foot supports with regard to representative points of the left and right foot supports, and wherein said lateral distance between forward ends of said travel paths differs the lateral distance between rearward ends of said travel paths, and said representative point of said left foot support is selected to a point which does not fluctuate with varying an inclination angle of said tell foot support relative to said carrier, and said representative point of said right foot support is selected to a point which does not fluctuate with varying an inclination angle of said right foot support relative to said carrier.