Patent ID: 8113995

Claim:
An elliptical exercise machine comprising: a base; two swing rods connected pivotally to said base and spaced apart from one another in a left-to-right direction; a flywheel disposed rotatably on said base; two supporting rods connected respectively to bottom ends of said swing rods and connected pivotally to said flywheel; two pedal rods disposed fixedly on said base, a rotatable member disposed rotatably on said fixed member and locked releasably on said fixed member at a selected one of a plurality of angular positions; two cranks having upper ends connected respectively and pivotally to left and right sides of said rotatable member, and lower ends opposite to said upper ends, and two links each having a first pivot portion connected pivotally to a respective one of said pedal rods, a second pivot portion disposed above and said first pivot portion and connected pivotally to a respective one of said swing rods, and a third pivot portion spaced apart from said second pivot portion and connected pivotally to said lower end of a respective one of said cranks, said links being driven by said cranks to move said pedal rods forwardly and rearwardly on said supporting rods, respectively.