Patent ID: 7670268

Claim:
An elliptical motion exercise apparatus, comprising: a frame configured to rest on a floor surface; a left crank and a right crank, wherein each said crank is rotatably mounted on the frame for rotation about a common crank axis; a left drive link and a right drive link, wherein each said drive link has a forward end rotatably coupled to a respective said crank at a common crank radius from the crank axis, and a rearward end constrained to move in reciprocal fashion relative to the frame; a left rocker link and a right rocker link, wherein each said rocker link is rotatably mounted on the frame at a common pivot axis; a left drawbar link and a right drawbar link, wherein each said drawbar link is rotatably interconnected between a respective said rocker link and a respective said drive link, and each said rocker link and a respective said drawbar link cooperate to define a respective first rocker pivot axis disposed at a first radial distance from the common pivot axis, and the left drawbar link and the left drive link cooperate to define a left linkage, and the right drawbar link and the right drive link cooperate to define a right linkage; and a left foot link and a right foot link, wherein each said foot link has a forward end rotatably coupled to a respective said rocker link, and a rearward, foot supporting end movably supported on a respective said linkage, wherein each said rocker link and a respective said foot link cooperate to define a respective second rocker pivot axis disposed at a relatively greater, second distance from the common pivot axis, whereby each said foot supporting end moves through a respective elliptical path having a major axis that is more than double the common crank radius.