Patent ID: 7300387

Claim:
An elliptical exercise device having a treadle assembly, comprising: a) a mounting seat having a supporting groove in the middle thereof and two indentations in the middle of both sides thereof; b) a treadle having a rigid cylinder at the bottom thereof, the inside of the rigid cylinder being filled with soft filling material, a screw bolt being fitted in the middle of the soft filling material for securing the mounting seat to the treadle by fixing the screw bolt in the indentations of the mounting seat; c) a bearing bracket attached to a bottom side of the supporting groove of the mounting seat, a bearing being disposed at each of four corners for a full contact with the periphery of the rigid, cylinder; and d) a treadle plank, the mounting seat is connected to the treadle pank, whereby, the soft filling material subjects the treadle to a torsion force, and whereby the treadle moves in an elliptical path during use.