| 摘要 |
<p>An improvement in a snowmobile having laterallyspaced, ground-engaging flexible traction bands with supporting rails positioned intermediate the bands. Transversely-extending channel bars are secured integrally with the traction bands. Traction lugs are positioned in the channel bars and extend transversely and symmetrically relative to the space between the bands. The lugs serve to engage the surface of travel and to provide a rigid support against undue distortion of the channel bars, and to provide increased tractive force.</p> |
