Patent ID: 7780247

Claim:
An endless snowmobile track for traction of a snowmobile, the snowmobile comprising a plurality of drive wheels for imparting motion to the endless snowmobile track, the endless snowmobile track comprising: an inner side for facing the drive wheels; a ground-engaging outer side for engaging the ground; a central portion for passing between a first one of the drive wheels and a second one of the drive wheels; and a plurality of noise-reducing through holes distributed along the endless snowmobile track for reducing noise generated when the endless snowmobile track is in motion, each noise-reducing through hole: extending through the endless snowmobile track from the inner side to the ground-engaging outer side; and being located such that no drive wheel tooth is received in the noise-reducing through hole when the endless snowmobile track is in motion; at least one of the noise-reducing through holes being located in the central portion of the endless snowmobile track; wherein, when the snowmobile is operated in a range of speeds, a noise level produced is less than that which would be produced if the endless snowmobile track lacked the noise-reducing through holes, but was otherwise identical.