# US 9,873,292 B2 · Aircraft tire

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- Number: US 9,873,292 B2
- Document ID: US9873292B2
- Status: Granted
- Kind: B2
- Application number: 14/785,853
- Filed: 2014-04-14
- Published: 2016-03-17
- Granted: 2018-01-23
- Earliest claimed: 2013-04-23
- Assignees: Bridgestone Corporation
- Applicants: Bridgestone Corporation
- Inventors: Tomotaka Sakiyama
- Web page: https://patentgrep.com/patent/US9873292B2

## CPC

- B60C 11/1236: {with special arrangements in the tread pattern}
- B60C 11/04: in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag (B60C11/12, B60C11/13 take precedence)
- B60C 11/042: {further characterised by the groove cross-section}
- B60C 2011/1209: {straight at the tread surface}
- B60C 2011/129: {Sipe density, i.e. the distance between the sipes within the pattern}
- B60C 2011/1295: {variable}
- B60C 2200/02: for aircrafts
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES

## Abstract

An aircraft tire has: plural ribs, (a wide rib, narrow ribs) that are provided at a tread portion, and that are demarcated by circumferential direction grooves that extend in a tire circumferential direction; and sipes that are formed in a tire transverse direction in the respective ribs, and that have tire circumferential direction positions that differ in ribs that are adjacent to one another in the tire transverse direction.

## Claims

### Claim 1

An aircraft tire, comprising:
a plurality of ribs that are provided at a tread portion, and that are demarcated by circumferential direction grooves that extend in a tire circumferential direction; and
sipes that are formed in a tire transverse direction in the respective ribs, and that have tire circumferential direction positions that differ in ribs that are adjacent to one another in the tire transverse direction; wherein
the ribs comprise a wide rib and a narrow rib having a smaller width than the wide rib;
an interval between the sipes in the tire circumferential direction in the wide rib is equal to an interval between the sipes in the tire circumferential direction in the narrow rib;
among the ribs that are adjacent to one another in the tire transverse direction, the sipes of one of the ribs are formed at intermediate positions of a tire circumferential direction pitch of the sipes of another of the ribs; and
tire circumferential direction positions of the sipes of one rib are furthest apart from the tire circumferential direction positions of the sipes of the adjacent rib.