# US 11,027,577 B2 · Tire

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- Number: US 11,027,577 B2
- Document ID: US11027577B2
- Status: Granted
- Kind: B2
- Application number: 16/069,061
- Filed: 2017-01-27
- Published: 2019-01-24
- Granted: 2021-06-08
- Earliest claimed: 2016-01-29
- Assignees: Bridgestone Corporation
- Applicants: Bridgestone Corporation
- Inventors: Daisuke Nakajima
- Web page: https://patentgrep.com/patent/US11027577B2

## CPC

- B60C 1/00: Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60B 3/04: with a single disc body not integral with rim {, i.e. disc body and rim being manufactured independently and then permanently attached to each other in a second step, e.g. by welding}
- B60C 7/14: using springs
- B60C 7/18: disposed radially relative to wheel axis
- C08L 23/26: modified by chemical after-treatment (saponified copolymers C08L23/0861; unsaturated acid salts C08L23/0876)
- C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence)
- C08L 101/00: Compositions of unspecified macromolecular compounds
- B60B 3/10: apertured to simulate spoked wheels
- B60B 2360/104: Aluminum
- B60B 2900/321: Lifetime
- B60B 2900/721: Use under adverse external conditions
- B60C 7/146: {extending substantially radially, e.g. like spokes}
- B60C 2001/0091: {Compositions of non-inflatable or solid tyres}
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

The provided tire has excellent durability regardless of use in a high-humidity environment or contact with water, even though the framework member of the tire is made of a resin material. The resin material is made of a resin composition including 60 mass % or more of a polyamide resin formed by polymerizing an aliphatic diamine having 6 to 20 carbon atoms and an aliphatic dicarboxylic acid having 10 to 20 carbon atoms.

## Claims

### Claim 1

A tire comprising:
an attachment body to be attached to an axle;
a ring member including an inner cylinder externally covering the attachment body and an outer cylinder surrounding the inner cylinder from a tire radial outer side;
a plurality of connecting members arranged along a tire circumferential direction between the inner cylinder and the outer cylinder and connecting the inner cylinder and the outer cylinder to each other; and
a tread member made of vulcanized rubber and located on the tire radial outer side of the outer cylinder of the ring member;
wherein the tire is a non-pneumatic tire,
the ring member and the connecting members form a framework member and are made of a resin material;
wherein the resin material is made of a resin composition including 60 mass % or more of a polyamide resin formed by polymerizing an aliphatic diamine having 6 to 20 carbon atoms and an aliphatic dicarboxylic acid having 10 to 20 carbon atoms, and 40 mass % or less of a flexible component having a glass transition temperature of 0° C. or lower,
the flexible component includes poly α-olefin, and
maleic anhydride is copolymerized with or grafted onto at least a portion of the poly α-olefin.