US 12,709,117 B2Granted

Tire

AssigneeThe Yokohama Rubber Co., Ltd.

InventorsKento Ishizu, Yoshifumi Koishikawa

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Abstract

In a tire, an outermost circumferential groove is on the outermost side in the width direction, a center land portion and center lug grooves are on an inner side of the outermost circumferential groove in the width direction, the center lug grooves include an end opening to the outermost circumferential groove, a width-direction sipe and a circumferential sipe are on an individual side of both sides in the circumferential direction of a center lug groove of an individual pair of the center lug grooves adjacent in the circumferential direction, the width-direction sipe includes one end opening to the outermost circumferential groove to which the center lug groove opens and the other end terminating within the center land portion, and the circumferential sipe includes one end opening to the center lug groove and the other end terminating near the width-direction sipe or communicating with the width-direction sipe.

Claims26

Dependent claims

A tire, comprising:

a plurality of circumferential grooves extending in a tire circumferential direction;
a plurality of land portions defined by the circumferential grooves;
and
a plurality of lug grooves extending in a tire width direction;
of the plurality of circumferential grooves, a circumferential groove located on an outermost side in the tire width direction being an outermost circumferential groove,
of the plurality of land portions, the land portion located on an inner side of the outermost circumferential groove in the tire width direction being a center land portion,
of the plurality of lug grooves, the lug grooves located on an inner side of the outermost circumferential groove in the tire width direction being center lug grooves,
one end of the center lug grooves opening to one of the circumferential grooves,
an other end of the center lug grooves, which is located on an opposite side of the one end opening to the one of the circumferential grooves, terminates within the center land portion without opening to an other groove or sipe,
a width-direction sipe extending in the tire width direction and a circumferential sipe extending in the tire circumferential direction being disposed on an individual side of both sides in the tire circumferential direction of the center lug groove of an individual pair of the center lug grooves adjacent in the tire circumferential direction,
the width-direction sipe opening to, at one end, the one of the circumferential grooves to which the center lug groove opens and terminating at an other end within the center land portion,
the circumferential sipe opening to the center lug groove at one end and terminating at an other end near the width-direction sipe or communicating with the width-direction sipe, and
through sipes being disposed at different pitches, where one end of each of the through sipes communicates with one of the circumferential grooves and an other end of each of the through sipes communicates with an other one of the circumferential grooves.

10 more elements

A tire, comprising:

a tread portion being point-symmetric with respect to a point on the tire equator line in a plane view,
the tread portion comprising,
a plurality of circumferential grooves extending in a tire circumferential direction;
a plurality of land portions defined by the circumferential grooves;
and
a plurality of lug grooves extending in a tire width direction;
of the plurality of circumferential grooves, a circumferential groove located on an outermost side in the tire width direction being an outermost circumferential groove,
of the plurality of land portions, the land portion located on an inner side of the outermost circumferential groove in the tire width direction being a center land portion,
of the plurality of lug grooves, the lug grooves located on an inner side of the outermost circumferential groove in the tire width direction being center lug grooves,
one end of the center lug grooves opening to one of the circumferential grooves,
an other end of the center lug grooves, which is located on an opposite side of the one end opening to the one of the circumferential grooves, terminates within the center land portion without opening to an other groove or sipe,
a width-direction sipe extending in the tire width direction and a circumferential sipe extending in the tire circumferential direction being disposed on an individual side of both sides in the tire circumferential direction of the center lug groove of an individual pair of the center lug grooves adjacent in the tire circumferential direction,
the width-direction sipe opening to, at one end, the one of the circumferential grooves to which the center lug groove opens and terminating at an other end within the center land portion,
the circumferential sipe opening to the center lug groove at one end and terminating at an other end near the width-direction sipe or communicating with the width-direction sipe, and
no lug grooves connecting to the center lug groove between the one end and the other end of the center lug groove.

12 more elements

A tire, comprising:

a plurality of circumferential grooves extending in a tire circumferential direction;
a plurality of land portions defined by the circumferential grooves;
and
a plurality of lug grooves extending in a tire width direction;
wherein one of the circumferential grooves is disposed on a tire equatorial plane,
of the plurality of circumferential grooves, a circumferential groove located on an outermost side in the tire width direction being an outermost circumferential groove,
of the plurality of land portions, the land portion located on an inner side of the outermost circumferential groove in the tire width direction being a center land portion,
of the plurality of lug grooves, the lug grooves located on an inner side of the outermost circumferential groove in the tire width direction being center lug grooves,
one end of the center lug grooves opening to one of the circumferential grooves,
an other end of the center lug grooves, which is located on an opposite side of the one end opening to the one of the circumferential grooves, terminates within the center land portion without opening to an other groove or sipe,
a width-direction sipe extending in the tire width direction and a circumferential sipe extending in the tire circumferential direction being disposed on an individual side of both sides in the tire circumferential direction of the center lug groove of an individual pair of the center lug grooves adjacent in the tire circumferential direction,
the width-direction sipe opening to, at one end, the one of the circumferential grooves to which the center lug groove opens and terminating at an other end within the center land portion,
the circumferential sipe opening to the center lug groove at one end and terminating at an other end near the width-direction sipe or communicating with the width-direction sipe, and
no lug grooves connecting to the center lug groove between the one end and the other end of the center lug groove.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/907,638Filed 2 Apr 2021
Priority: JP 2020-0675393 Apr 2020
Published: US 2023/0125096 A127 Apr 2023
Granted: 18 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B60C 11/0306
Tread patterns: patterns comprising block rows or discontinuous ribs
B60C 11/1236
Characterised by the use of narrow slits or incisions, e.g. sipes: with special arrangements in the tread pattern
B60C 2011/0341
Grooves: circumferential grooves
B60C 2011/0344
Circumferential grooves: provided at the equatorial plane