Patent ID: 7648445
Filing Date: 2010-01-19
Classification: A63B

Abstract:
1. An elliptical exercise apparatus, comprising: a body having a base frame and two supporting frames uprighted at two opposite sides of the base frame; a pair of lead swing arms each having an upper end pivotally coupled with the corresponding supporting frame, wherein a sliding treadle assembly having a lower end provided with a treadle portion is axially slidably attached to the lead swing arm; a pair of subsidiary swing arms each having one end pivotally coupled with the base frame wherein a subsidiary sliding sleeve pivotally coupled with the sliding treadle assembly via a pivot is axially slidably attached to the subsidiary swing arm; and a rotational shaft transversely and pivotally coupled with the base frame, wherein at each of two ends of the rotational shaft, a vertical rotational link has one end coupled with the rotational shaft and an opposite end pivotally coupled with a lower end of the sliding sleeve; whereby when the treadle portions are pushed, the lead swing arms and the subsidiary swing arms respectively swing back and forth and the sliding sleeves as well as the subsidiary swing arms slide vertically along the lead swing arms and the subsidiary swing arms while the rotational link rotates against the rotational shaft, leading the treadle portions to move along an elliptical exercise track.