CPC B62D 55/244 (2013.01) [B29D 29/00 (2013.01); B29K 2995/0087 (2013.01); B29L 2029/00 (2013.01); B60K 28/10 (2013.01); B60K 35/00 (2013.01); G07C 5/0808 (2013.01); G07C 5/0825 (2013.01)] | 20 Claims |
1. A track for a vehicle, the track being mountable around a track-engaging assembly configured to move the track around the track-engaging assembly, the track-engaging assembly comprising a plurality of wheels for engaging the track, the track being elastomeric to flex around the track-engaging assembly, the track comprising:
a carcass having a ground-engaging outer surface and an inner surface opposite to the ground-engaging outer surface; and
a plurality of traction projections projecting from the ground-engaging outer surface of the carcass and distributed in a longitudinal direction of the track, wherein at least one of the plurality of traction projections comprises:
a first material; and
a second material disposed inwardly of the first material;
wherein at least one of:
a wear resistance of the first material is greater than a wear resistance of the second material;
a modulus of elasticity of the first material is different from a modulus of elasticity of the second material;
a tensile strength of the first material is different from a tensile strength of the second material;
a resistance to heat buildup of the first material is less than a resistance to heat buildup of the second material; and
a crack propagation resistance of the first material is greater than a crack propagation resistance of the second material;
wherein a ratio of a volume of the second material over a volume of the at least one of the plurality of traction lugs is at least 0.3; and
wherein an entirety of the second material projects outwardly from the ground engaging surface of the carcass.
|