# US 12,109,845 B2 · Pneumatic tire

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- Number: US 12,109,845 B2
- Document ID: US12109845B2
- Status: Granted
- Kind: B2
- Application number: 16/642,516
- Filed: 2018-08-31
- Published: 2020-06-18
- Granted: 2024-10-08
- Earliest claimed: 2017-09-12
- Assignees: Sumitomo Rubber Industries, Ltd.
- Applicants: Sumitomo Rubber Industries, Ltd.
- Inventors: Takuma Yoshizumi; Hiroki Nakajima
- Web page: https://patentgrep.com/patent/US12109845B2

## CPC

- B60C 19/00: Tyre parts or constructions not otherwise provided for
- B60C 23/0433: {Radio signals}
- B60C 2013/006: {Modulus; Hardness; Loss modulus or "tangens delta"}
- B60C 2015/0614: {characterised by features of the chafer or clinch portion, i.e. the part of the bead contacting the rim}
- B60C 2019/004: {Tyre sensors other than for detecting tyre pressure}
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES

## Abstract

Provided is a tire structure technology with which sufficient reading performance can be maintained even when a tire having an electronic component provided therein is caused to travel at high speed with severe handling. A pneumatic tire in which an electronic component is provided farther outward in a tire axial direction than a carcass, and in which the E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of a first rubber member, and the E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of a second rubber member, satisfy the following formula, where the first rubber member is a tire rubber member that has the greatest E* at 50° C. among tire rubber members positioned inward from the electronic component in the tire axial direction, and the second rubber member is a tire rubber member that has the greatest E* at 50° C. among tire rubber members positioned outward from the electronic component in the tire axial direction. (E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥1.0

## Claims

### Claim 1

A pneumatic tire provided with an electronic component at a position outside of a carcass in a tire axial direction, wherein:
E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of a first rubber member having a largest E*(50° C.) at 50° C. among rubber members for the tire located inward in the tire axial direction from a position where the electronic component is provided, and
E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of a second rubber member having a largest E*(50° C.) at 50° C. among rubber members for the tire located outward in the tire axial direction from a position where the electronic component is provided, E*(1)50° C. is larger than E*(2)50° C., and satisfy the following formula:
(E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥1.0.

### Claim 2 (depends on 1)

The pneumatic tire according to claim 1, wherein E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of the first rubber member and E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of the second rubber member satisfy the following formula:
(E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥2.0.

### Claim 3 (depends on 2)

The pneumatic tire according to claim 2, wherein E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of the first rubber member and E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of the second rubber member satisfy the following formula:
(E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥3.0.

### Claim 4 (depends on 3)

The pneumatic tire according to claim 3, wherein E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of the first rubber member and E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of the second rubber member satisfy the following formula:
(E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥4.0.

### Claim 5 (depends on 4)

The pneumatic tire according to claim 4, wherein E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of the first rubber member and E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of the second rubber member satisfy the following formula:
(E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥5.0.

### Claim 6 (depends on 1)

The pneumatic tire according to claim 1, wherein E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of the first rubber member and E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of the second rubber member satisfy the following formula:
(E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥8.

### Claim 7 (depends on 6)

The pneumatic tire according to claim 6, wherein E*(1)50° C. at 50° C. and E*(1)150° C. at 150° C. of the first rubber member and E*(2)50° C. at 50° C. and E*(2)150° C. at 150° C. of the second rubber member satisfy the following formula:
(E*(1)50° C./E*(2)50° C.)−(E*(1)150° C./E*(2)150° C.)≥7.

### Claim 8 (depends on 1)

The pneumatic tire according to claim 1, wherein the electronic component is located outer side of the carcass in the tire axial direction in the cross-sectional view, and is embedded at a position of 20 to 80% from the bottom of bead core with respect to the distance from the position of the maximum tire width to the bottom of bead core in the equatorial direction.

### Claim 9 (depends on 1)

The pneumatic tire according to claim 1, wherein the electronic component is a RFID.