Patent ID: 8257230

Claim:
An elliptical trainer comprising a base having a bottom frame; a crank support and a handle support mounted separately on and protruding up from the bottom frame; a first crank assembly mounted rotatably on the crank support and having a first axle mounted pivotally through the crank support and having two opposite ends; a first transmission wheel mounted securely around one of the ends of the first axle; and two first cranks respectively mounted securely on the ends of the first axle and extending perpendicularly to the first axle, and each first crank having a distal end; and a proximal end mounted securely on a corresponding end of the first axle; a second crank assembly mounted rotatably on the crank support and having a second axle mounted pivotally through the crank support and having two opposite ends; a second transmission wheel mounted securely around one of the ends of the second axle and corresponding to the first transmission wheel; a transmission strip being looped around the first and second transmission wheels; and two second cranks respectively mounted securely on the ends of the second axle and extending perpendicularly to the second axle, and each second crank having a distal end; and a proximal end mounted securely on a corresponding end of the second axle; a handle assembly mounted pivotally on the handle support and having two handles respectively and longitudinally mounted pivotally on the handle support; and a linkage assembly connecting the first and second crank assemblies to the handle assembly, and having two first links respectively mounted pivotally on the distal ends of the first cranks; two second links respectively mounted pivotally on the distal ends of the second cranks, and pivotally and respectively connecting to the first links; and two transmission links pivotally and respectively connecting the first links to the handles.