Patent ID: 7462136

Claim:
An exercise machine, comprising: a frame; a reciprocating motion mechanism provided on the frame to provide a reciprocating motion; a circular motion mechanism provided on the frame to provide a circular motion; two linking members having opposite ends pivoted on the reciprocating motion mechanism and the circular motion mechanism; two parallelogram linkage mechanisms, each of which has a first linkage, a second linkage, a third linkage and a fourth linkage, wherein the first linkage is substantially parallel to the third linkage, and the second linkage is substantially parallel to the fourth linkage, and the second linkage and the fourth linkage have opposite ends pivoted on the first linkage and the third linkage respectively to form a four-linkage mechanism; the parallelogram linkage mechanisms movably mounted on the frame for reciprocation, and the first linkages pivoted on the linking members respectively; two foot panels provided on the first linkages of the parallelogram linkage mechanisms respectively; whereby when an user stands with feet on the foot panels and exerts the foot panels, the feet move along a substantially elliptic path, and user's toes move in a speed that is substantially identical to that of user's heels.