US 9,434,212 B2Granted

Tire

AssigneeBridgestone Corporation

InventorAtaka Takei

Life of this patent

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Abstract

First inclined grooves (110) and second inclined grooves (160) are formed on a land portion (40) of a tire. The first inclined grooves (110) and second inclined grooves (160) are alternately formed in the circumferential direction of the tire. Circumferential direction sipes (200) comprise: first circumferential direction sipes (210) that are formed extending from the end at the land portion (40) side of the first inclined grooves (110) to the central portion, in the tread width direction, of the second inclined grooves (160); and second circumferential direction sipes (220) that extend from the central portion, in the tread width direction, of the second inclined grooves (160) along the extension line from the first circumferential sipes (210). The second circumferential sipes (220) terminate in the land portion (40).

Claims6

Dependent claims

A tire comprising a land portion divided by a circumferential groove extending in a tire circumferential direction and extending in the tire circumferential direction, and a circumferential siping, which is formed in the land portion, extending in the tire circumferential direction, wherein

the land portion is formed with:
a first inclined groove that extends from one lateral portion in a tread widthwise direction of the land portion and that is inclined relative to the tire circumferential direction;
and
a second inclined groove that extends from the other lateral portion in the tread widthwise direction of the land portion and that is inclined relative to the tire circumferential direction,
the first inclined groove and the second inclined groove are alternately formed in the tire circumferential direction,
the circumferential siping includes:
a first circumferential siping that is formed from an end at a land portion side of the first inclined groove to an intermediate portion in the tread widthwise direction of the second inclined groove;
and
a second circumferential siping that extends from an intermediate portion in the tread widthwise direction of the second inclined groove along on an extended line of the first circumferential siping, and
the second circumferential siping is terminated within the land portion.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/234,802Filed 26 Jul 2012
Priority: JP 2011-16336326 Jul 2011
Published: US 2014/0150941 A15 Jun 2014
Granted: 6 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

B60C 11/0304
Tread patterns: asymmetric patterns
B60C 11/0306
Tread patterns: patterns comprising block rows or discontinuous ribs
B60C 11/04
Tread patterns: in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
B60C 11/12
Tread patterns: characterised by the use of narrow slits or incisions, e.g. sipes

Family

US 2014/0150941 A1Pre-grant publication · published 5 Jun 2014
US 9,434,212 B2This patent

From the US filing history. Foreign family members aren’t listed.

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