Endless track for traction of a vehicle

An endless track for traction of an off-road vehicle, the endless track being mountable around a plurality of wheels of the off-road vehicle, the plurality of wheels comprising a drive wheel for driving the endless track, the endless track comprising:

• an elastomeric belt-shaped body comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground;
• and
• a plurality of elastomeric drive/guide lugs projecting from the inner surface, each elastomeric drive/guide lug of the plurality of elastomeric drive/guide lugs comprising a plurality of zones of different elastomeric materials, the plurality of zones of different elastomeric materials comprising at least three zones of different elastomeric materials, the elastomeric drive/guide lug exhibiting an increase of a modulus of elasticity inwardly over the plurality of zones of different elastomeric materials.

An endless track for traction of an off-road vehicle, the endless track being mountable around a plurality of wheels of the off-road vehicle, the plurality of wheels comprising a drive wheel for driving the endless track, the endless track comprising:

• an elastomeric belt-shaped body comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground;
• and
• a plurality of elastomeric drive/guide lugs projecting from the inner surface, each elastomeric drive/guide lug of the plurality of elastomeric drive/guide lugs comprising a first elastomeric material, a second elastomeric material stiffer than the first elastomeric material, and a third elastomeric material stiffer than the second elastomeric material, the first elastomeric material being disposed between a periphery of the elastomeric drive/guide lug and the second elastomeric material, the second elastomeric material being disposed between the first elastomeric material and the third elastomeric material.

A method of making an endless track for traction of an off-road vehicle, the endless track being mountable around a plurality of wheels of the off-road vehicle, the plurality of wheels comprising a drive wheel for driving the endless track, the method comprising:

• forming an elastomeric belt-shaped body of the endless track, the elastomeric belt-shaped body comprising an inner surface for facing the wheels and a ground-engaging outer surface for engaging the ground;
• and
• forming a plurality of elastomeric lugs of the endless track which project from a given one of the inner surface and the ground-engaging outer surface, each elastomeric lug of the plurality of elastomeric lugs having a material composition defining an arrangement of zones of different materials, the arrangement of zones of different materials comprising a plurality of zones of different elastomeric materials, the plurality of zones of different elastomeric materials comprising at least three zones of different elastomeric materials, the elastomeric lug exhibiting a desired variation of a material property across the arrangement of zones of different materials.