Ladas & Parry
Stepper
 A stepper includes a base frame, two swing arms, two hydraulic cylinders and an adjustment assembly. Each of the swing arms is mounted pivotally on the base frame at one end and carries a pedal on the other end. Each of the hydraulic cylinders is mounted pivotally on one of the pedals at one end and on the base frame at the other end. The adjustment assembly is disposed on the base frame and permits adjustments in the angular displacement of the pedals. 
Y A A A A
Y10S A63B A63B A63B A63B
additional additional additional inventional additional
Jin-Liang Cheng-Chang
Chen Wu