Track system for traction of a vehicle

A track for traction of a vehicle, the track being mountable around a plurality of wheels that comprises a drive wheel for driving the track, the track being elastomeric to flex around the wheels, the track comprising:

• an inner surface for facing the wheels;
• a ground-engaging outer surface for engaging the ground;
• and
• a plurality of traction projections projecting from the ground-engaging outer surface and distributed in a longitudinal direction of the track, each traction projection of the plurality of traction projections comprising:
• an outer elastomeric material extending to a periphery of the traction projection;
• and
• an inner elastomeric material disposed inwardly of the outer elastomeric material and more resistant to blowout than the outer elastomeric material to prevent blowout of the traction projection during use of the track.

A track for traction of a vehicle, the track being mountable around a plurality of wheels that comprises a drive wheel for driving the track, the track being elastomeric to flex around the wheels, the track comprising:

• an inner surface for facing the wheels;
• a ground-engaging outer surface for engaging the ground;
• and
• a plurality of traction projections projecting from the ground-engaging outer surface and distributed in a longitudinal direction of the track, each traction projection of the plurality of traction projections comprising:
• an outer elastomeric material extending to a periphery of the traction projection;
• and
• an inner elastomeric material disposed inwardly of the outer elastomeric material and having a blowout time of at least plural minutes under ASTM D-623.

A track for traction of a vehicle, the track being mountable around a plurality of wheels that comprises a drive wheel for driving the track, the track being elastomeric to flex around the wheels, the track comprising:

• an inner surface for facing the wheels;
• a ground-engaging outer surface for engaging the ground;
• and
• a plurality of traction projections projecting from the ground-engaging outer surface and distributed in a longitudinal direction of the track, each traction projection of the plurality of traction projections comprising:
• an outer elastomeric material extending to a periphery of the traction projection;
• and
• an inner elastomeric material disposed inwardly of the outer elastomeric material and configured to generate less heat buildup than the outer elastomeric material.