# US 2018/0022162 A1 · Pneumatic Tire

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- Number: US 2018/0022162 A1
- Document ID: US20180022162A1
- Status: Published application
- Kind: A1
- Application number: 15/547,482
- Filed: 2016-01-28
- Published: 2018-01-25
- Earliest claimed: 2015-01-29
- Assignees: The Yokohama Rubber Co., Ltd.
- Applicants: The Yokohama Rubber Co., LTD.
- Inventors: Ryohei Takemori
- Web page: https://patentgrep.com/patent/US20180022162A1

## CPC

- B60C 11/01: Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
- B60C 11/0311: {Patterns comprising tread lugs arranged parallel or oblique to the axis of rotation}
- B60C 11/11: in which the raised area of the pattern consists only of isolated elements, e.g. blocks (B60C11/12, B60C11/13 take precedence)
- B60C 13/02: Arrangement of grooves or ribs
- B60C 3/04: characterised by the relative dimensions of the section, e.g. low profile (B60C3/06 takes precedence)
- B60C 11/0306: {Patterns comprising block rows or discontinuous ribs}
- B60C 2011/0346: {with zigzag shape}
- B60C 2011/0381: {Blind or isolated grooves}
- B60C 2011/1213: {sinusoidal or zigzag at the tread surface}
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES

## Abstract

A pneumatic tire is provided whereby superior driving performance on muddy ground, snowy roads, sandy land, and the like can be obtained. The pneumatic tire includes main grooves provided in shoulder regions of a tread portion and extending in a tire circumferential direction; a plurality of lug grooves extending outward in a tire width direction from the main grooves and reaching sidewall portions; and a plurality of blocks that is partitioned by the main grooves and the lug grooves. In this pneumatic tire, a raised portion protruding from the blocks is provided at an end portion on an outer side in the tire width direction of the blocks; and the raised portion extends in the tire circumferential direction so as to protrude into the lug grooves positioned on both sides of the raised portion.

## Claims

### Claim 1

A pneumatic tire, comprising:
a tread portion extending in a tire circumferential direction to form an annular shape;
a pair of sidewall portions disposed on both sides of the tread portion;
a pair of bead portions disposed inward in a tire radial direction of the sidewall portions;
main grooves disposed in shoulder regions of the tread portion and extending in the tire circumferential direction;
a plurality of lug grooves extending outward in a tire width direction from the main grooves and reaching the sidewall portions; and
a plurality of blocks partitioned by the main grooves and the lug grooves; wherein
a raised portion protruding from the blocks is provided at an end portion outward in the tire width direction of the blocks; and
the raised portion extends in the tire circumferential direction so as to protrude into lug grooves positioned on both sides of the raised portion.

### Claim 2 (depends on 1)

The pneumatic tire according to claim 1, wherein:
a pair of the raised portions protruding into a same lug groove is disposed such that phases in the tire width direction in the same lug groove differ from each other.

### Claim 3 (depends on 1)

The pneumatic tire according to claim 1, wherein:
a ratio A/H of a vertical distance A measured in the tire radial direction from a ground contact edge position of the tread portion to the raised portion, to a tire cross-sectional height H is from 0.15 to 0.30.

### Claim 4 (depends on 1)

The pneumatic tire according to claim 1, wherein:
at least one cavity for which surroundings are obstructed is provided in the blocks.

### Claim 5 (depends on 4)

The pneumatic tire according to claim 4, wherein:
a ratio B/H of a vertical distance B measured in the tire radial direction from the ground contact edge position of the tread portion to the cavity, to the tire cross-sectional height H is from 0.05 to 0.15.