Patent ID: 7367925

Claim:
An elliptical exercise apparatus comprising: an elongated frame having opposite first and second ends; a pair of left and right cranks mounted rotatably on said frame and rotatable about a common crank axis; a pair of left and right rails each disposed fixedly on said first end portion of said frame and having an inner rail surface disposed around said common crank axis, an outer rail surface disposed around said inner rail surface, and a non-circular guide slot defined between said inner and outer rail surfaces; a pair of left and right extension links each having a first connecting portion, a second connecting portion, and a third connecting portion, said first connecting portions of said left and right extension links being connected respectively, radially, and slidably to said left and right cranks, said second connecting portion of each of said left and right extension links being mounted with a rotatable roller, said rollers being disposed respectively and movably within said guide slots; a pair of left and right connector members disposed on said second end portion of said frame and reciprocatable along a longitudinal direction of said frame; and a pair of left and right foot links each having first and second ends connected respectively and pivotally to said third connecting portion of a corresponding one of said left and right extension links and a corresponding one of said left and right connector members.