No-slip drive sprocket

Details No-slip drive sprocket No-slip drive sprocket

B - Operations, Transporting

62

D

B62D 55/12 (2006.01) B62D 55/07 (2006.01) B62D 55/125 (2006.01) B62M 27/02 (2006.01)

Patent

CA 2417314

A drive sprocket for a snowmobile, a drive train using the sprocket, and a method of using the sprocket to drive a track for a snowmobile. The drive sprocket includes a round base, a plurality of convolute lugs on the base, and a plurality of involute lugs on both sides of the base. The base is preferably disk shaped, and the convolute lugs are preferably aligned with the involute lugs. In the preferred embodiment, a number of convolute lugs is one half a number of involute lugs. The convolute lugs should line up with windows in a track for the snowmobile, and the involute lugs should line up with gaps between knobs on the track for the snowmobile. Preferably, the sprocket also includes a hub with a through hole for a drive shaft and stiffening arms radiating from the hub. The stiffening arms can include braces for the involute lugs. Further stiffening can be achieved with raised rims on each side of the base. Likewise, the convolute lugs can include stiffening ridges.

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