US 11,897,558 B2
Track system for traction of a vehicle
Patrice Boily, Ste-Catherine-de-Hatley (CA); Matthieu Bergeron, Sherbrooke (CA); Simon Richard, Sherbrooke (CA); and Ghislain Laperle, Sherbrooke (CA)
Assigned to Camso Inc., Magog (CA)
Filed by CAMSO INC., Magog (CA)
Filed on Aug. 10, 2020, as Appl. No. 16/989,823.
Application 16/989,823 is a continuation of application No. 15/724,733, filed on Oct. 4, 2017, granted, now 11,046,377.
Application 15/724,733 is a continuation of application No. 15/555,148, granted, now 11,167,810, previously published as PCT/CA2016/050234, filed on Mar. 4, 2016.
Claims priority of provisional application 62/128,183, filed on Mar. 4, 2015.
Prior Publication US 2021/0024150 A1, Jan. 28, 2021
Int. Cl. B62D 55/24 (2006.01); B29D 29/00 (2006.01); B29L 29/00 (2006.01); B60K 28/10 (2006.01); B60K 35/00 (2006.01); G07C 5/08 (2006.01)
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
OG exemplary drawing
 
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.