Multi-layer tread for use in vehicle tyres
AssigneeContinental Reifen Deutschland GmbH
InventorsJustus Römer, Ömür Misir
Life of this patent
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Abstract
The invention relates to a multi-layer tread for use in vehicle tires, comprising: a) a base layer comprising a first rubber material, and b) a top layer arranged on the base layer and connected to the base layer, wherein the top layer comprises: i) a first side region comprising a second rubber material, ii) a second side region comprising a third rubber material, and iii) a central region arranged between the first side region and the second side region and comprising a fourth rubber material, wherein the first rubber material has a higher modulus of elasticity than the fourth rubber material, and wherein the fourth rubber material has a higher modulus of elasticity than the second rubber material and the third rubber material.
Claims8
A multi-layer tread for use in vehicle tires, comprising:
- a base layer comprising a first rubber material;
- and
- a top layer arranged on the base layer and connected to the base layer;
- wherein the top layer comprises:
- a first side region comprising a second rubber material;
- a second side region comprising a third rubber material;
- and
- a central region arranged between the first side region and the second side region and comprising a fourth rubber material;
- wherein the first rubber material has a higher modulus of elasticity than the fourth rubber material, and wherein the fourth rubber material has a higher modulus of elasticity than the second rubber material and the third rubber material;
- wherein the modulus of elasticity of the first rubber material is in the range of from 12 to 17 MPa, the modulus of elasticity of the second rubber material is in the range of from 6 to 11 MPa, the modulus of elasticity of the third rubber material is in the range of from 6 to 11 MPa, and the modulus of elasticity of the fourth rubber material is in the range of from 11 to 16 MPa;
- and
- wherein the first rubber material and the fourth rubber material have a higher Shore A hardness than the second rubber material and the third rubber material, wherein the Shore A hardness of the first rubber material and of the fourth rubber material is in the range of from 70 to 80, wherein the Shore A hardness of the second rubber material and of the third rubber material is in the range of from 60 to 69.
A multi-layer tread for use in vehicle tires, comprising:
- a base layer comprising a first rubber material;
- a top layer arranged on the base layer and connected to the base layer;
- the top layer comprises:
- a first side region comprising a second rubber material;
- a second side region comprising a third rubber material;
- and
- a central region arranged between the first side region and the second side region and comprising a fourth rubber material;
- wherein the first rubber material has a higher modulus of elasticity than the fourth rubber material, and wherein the fourth rubber material has a higher modulus of elasticity than the second rubber material and the third rubber material;
- the modulus of elasticity of the first rubber material is in the range of from 13 to 16 MPa;
- the modulus of elasticity of the second rubber material is in the range of from 7 to 10 MPa;
- the modulus of elasticity of the third rubber material is in the range of from 7 to 10 MPa;
- the modulus of elasticity of the fourth rubber material is in the range of from 12 to 15 MPa;
- the base layer has, on the side facing the top layer, a material projection which extends over the entire length of the tread, wherein a central region is of two-part design and comprises a first central part and a second central part;
- the first central part and the second central part are arranged on different sides of the material projection;
- the material projection is connected materially at the flanks to the first central part and the second central part;
- and
- the thickness of the top layer is not greater than the height of the material projection.
Dependencies are inferred from the claim text.