Patent ID: 7503879

Claim:
A stepper of fitness equipment comprising: a) a base having a front lever and a central rod extending rearwardly from a center of the front lever; b) two pedals linked together, each of the two pedals is pivotally connected to the base to simulate walking by engaging in alternative motions up and down; each of the two pedals has a short post extending downwardly from a toe end thereof and a sleeve located on an end of the short post; one of two opposing ends of the front lever is inserted through each sleeve, the two pedals pivoting up and down with the front lever being the axis, and c) a linking member and a clamping member, the linking member is axially connected to the central rod of the base by a shaft, the linking member is mounted between upper and lower clamping plates of the clamping member, the linking member has a connection rod coupled to each of the two pedals and extending laterally from each of two opposing sides of a first end thereof and a resistance plate extending from the shaft to a second end of the linking member, a clamping bolt mounted between the upper and the lower clamping plates and located adjacent to the resistance plate, a knob being fastened to a tail of the clamping bolt; and the knob selectively adjusting a clamping force between the upper and the lower clamping plates and the resistance plate thereby controlling a force required to move the two pedals, wherein both the linking member and the clamping member are axially connected to the central rod by a shaft, the central rod has an eyelet and a base plate, the shaft is pivotally connected to the central rod by the eyelet, an adjustment bolt extending through the shaft and engaging the base plate, a working height of the two pedals is changed by adjusting an angle of the adjustment bolt penetrating through the shaft.