Patent ID: 7468021

Claim:
An elliptical exercise machine comprising: a frame; a crankshaft rotationally connected to said frame; a rail attached to said crankshaft so that said rail traverses a path in conjunction with the rotation of said crankshafts; a pendulum arm, connected to said frame at a first rotational axis to said frame, and operatively connected to said crankshaft such that said pendulum arm reciprocates within a first arc segment as said crankshaft rotates; a footskate, said footskate capable of reciprocating movement on said rail; an adjustment arm, said adjustment arm connected to said frame at a second rotational axis, spaced from said first rotational axis, said adjustment arm being operationally attached to said footskate via an interface located toward the distal end of said adjustment arm so that reciprocation of said adjustment arm through a second arc segment is translated into said reciprocating movement of said footskate; and a coupler connecting said adjustment arm to said pendulum arm so that when said pendulum arm reciprocates about said first rotational axis, said adjustment arm is forced to reciprocate about said second rotational axis; said coupler being spaced a first distance from said first axis and a second distance from said second axis; wherein, at least one of said first distance and said second distance is variable.