Pneumatic tire including sipes
AssigneeSemperit Reifen Aktiengesellschaft
InventorFranz Diensthuber
Life of this patent
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Abstract
Pneumatic tire. The invention pertains to a vehicle tire for use in winter driving conditions whose tread pattern includes a circumferentially extending row in each of the shoulder regions, wherein the profile or pattern is asymmetrically shaped and includes, relative to the vehicle, an inner tread portion and an outer tread portion, with the shoulder block row of the inner tread portion being provided with sipes having good opening characteristics, with reference to the circumferential direction of the tire, and the shoulder block row of the outer tread portion is provided with sipes that assure high block rigidity during lateral force loading.
Claims17
A motor vehicle tire having a tread comprising:
- an asymmetrically shaped tread pattern, including an inner tread portion and an outer tread portion;
- a plurality of circumferentially extending rows of tread pattern structures, said rows of tread pattern structures including a circumferentially extending inner shoulder block row in said inner tread portion and a circumferentially extending outer shoulder block row in said outer tread portion;
- said inner shoulder block row comprising a plurality of inner shoulder blocks having only sipes with a stepped shape for facilitating opening of the inner shoulder block sipes in a circumferential direction;
- and
- said outer shoulder block row comprising a plurality of outer shoulder blocks having only sipes with one of a wave and a zig-zag shape for providing the blocks of the outer shoulder block row with high rigidity during lateral force loading;
- wherein said stepped shape has a different shape than said one of said wave and zig-zap shape.
A motor vehicle tire having a tread comprising:
- an asymmetrically shaped tread pattern, including an inner tread portion and an outer tread portion;
- a plurality of circumferentially extending rows of tread pattern structures, said rows of tread pattern structures including a circumferentially extending inner shoulder block row in said inner tread portion and a circumferentially extending outer shoulder block row in said outer tread portion;
- said inner shoulder block row comprising a plurality of inner shoulder blocks including only sipes having a stepped shape, which comprises successively arranged long sipe portions and short sipe portions for facilitating opening of the inner shoulder block sipes in a circumferential direction;
- and
- said outer shoulder block row comprising a plurality of outer shoulder blocks including only sipes having a substantially symmetric wave shape for providing the blocks of the outer shoulder block row with high rigidity during lateral force loading,
- wherein said stepped shape has a different shape than said wave shape.
Dependencies are inferred from the claim text.