Transmitting device for a walking machine

Abstract

A transmitting device for a walking machine includes a first and a second shaft positioned in parallel to each other. A first wheel is fixed on the first shaft, and a third wheel of a smaller diameter than the first wheel is fixed on the second shaft and rotated by the first wheel through a belt. Further a fourth wheel having a diameter smaller than the third wheel is fixed on the second shaft, rotating the second wheel through another belt. The second wheel rotates a flywheel fixed on the first shaft by means of a bearing. The transmitting device may function as two wheels and two stages under the same speed, compared with a conventional transmitting device for a walking machine, having a smaller size and a flywheel made larger to increase rotating inertial of the flywheel and consequent smoothness of pedaling.

I claim:  
     
         1 . A transmitting device for a walking machine comprising: 
 A first shaft having a first wheel fixed thereon to rotate together, a flywheel also fixed on said first shaft by means of a bearing, and a second wheel also fixed on the first shaft just beside said flywheel by means of another bearing: 
 A second shaft positioned in parallel to said first shaft, having a third wheel and a fourth wheel fixed thereon to rotate together, said third wheel having a smaller diameter than that of said first wheel, said first wheel and said third wheel rotated by a same belt, said fourth wheel having a larger diameter than those of said second and said third wheel, said second wheel and said fourth wheel rotated by another same belt: 
 Thus said transmitting device having function of two shafts and two stages so as to reduce its size and permit said flywheel made comparatively large to increase rotating inertia and consequent smoothness of pedaling.