# US 2022/0024262 A1 · Pneumatic tire > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0024262 A1 - Document ID: US20220024262A1 - Status: Published application - Kind: A1 - Application number: 17/311,345 - Filed: 2019-07-16 - Published: 2022-01-27 - Earliest claimed: 2019-07-16 - Assignees: Bridgestone Corporation - Applicants: Bridgestone Corporation - Inventors: Taiga ISHIHARA - Web page: https://patentgrep.com/patent/US20220024262A1 ## CPC - B60C 19/002: {Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior} - B60C 5/00: Inflatable pneumatic tyres or inner tubes (B60C1/00, B60C9/00 - B60C17/00 take precedence) - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES ## Abstract The pneumatic tire of the present disclosure has the sound absorbing member applied to the tire inner surface. The sound absorbing member is formed by laminating two or more sound absorbing layers each made of a nonwoven fabric. Each thickness of the sound absorbing layers is equal to or smaller than 2 mm. ## Claims ### Claim 1 A pneumatic tire having a sound absorbing member applied to a tire inner surface, wherein: the sound absorbing member is formed by laminating two or more sound absorbing layers each made of a nonwoven fabric; and each thickness of the sound absorbing layers is equal to or smaller than 2 mm. ### Claim 2 (depends on 1) The pneumatic tire according to claim 1, wherein: the tire includes a tread portion; and at least a part of the sound absorbing member is applied to an inner side of the tread portion in a tire radial direction. ### Claim 3 (depends on 1) The pneumatic tire according to claim 1, wherein the sound absorbing member is formed by laminating 10 to 200 sound absorbing layers each having a thickness ranging from 10 μm to 2 mm. ### Claim 4 (depends on 1) The pneumatic tire according to claim 1, wherein: the sound absorbing member includes one or more cut portions each extending in a width direction of the sound absorbing member; and the one or more cut portions extend from an inner surface of the sound absorbing member toward a tire outer surface side. ### Claim 5 (depends on 4) The pneumatic tire according to claim 4, wherein the one or more cut portions extend from the inner surface of the sound absorbing member toward the tire outer surface side, and terminate in the middle of the sound absorbing member. ### Claim 6 (depends on 1) The pneumatic tire according to claim 1, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member. ### Claim 7 (depends on 2) The pneumatic tire according to claim 2, wherein the sound absorbing member is formed by laminating 10 to 200 sound absorbing layers each having a thickness ranging from 10 μm to 2 mm. ### Claim 8 (depends on 2) The pneumatic tire according to claim 2, wherein: the sound absorbing member includes one or more cut portions each extending in a width direction of the sound absorbing member; and the one or more cut portions extend from an inner surface of the sound absorbing member toward a tire outer surface side. ### Claim 9 (depends on 3) The pneumatic tire according to claim 3, wherein: the sound absorbing member includes one or more cut portions each extending in a width direction of the sound absorbing member; and the one or more cut portions extend from an inner surface of the sound absorbing member toward a tire outer surface side. ### Claim 10 (depends on 2) The pneumatic tire according to claim 2, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member. ### Claim 11 (depends on 3) The pneumatic tire according to claim 3, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member. ### Claim 12 (depends on 4) The pneumatic tire according to claim 4, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member. ### Claim 13 (depends on 5) The pneumatic tire according to claim 5, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member. ### Claim 14 (depends on 7) The pneumatic tire according to claim 7, wherein: the sound absorbing member includes one or more cut portions each extending in a width direction of the sound absorbing member; and the one or more cut portions extend from an inner surface of the sound absorbing member toward a tire outer surface side. ### Claim 15 (depends on 8) The pneumatic tire according to claim 8, wherein the one or more cut portions extend from the inner surface of the sound absorbing member toward the tire outer surface side, and terminate in the middle of the sound absorbing member. ### Claim 16 (depends on 9) The pneumatic tire according to claim 9, wherein the one or more cut portions extend from the inner surface of the sound absorbing member toward the tire outer surface side, and terminate in the middle of the sound absorbing member. ### Claim 17 (depends on 14) The pneumatic tire according to claim 14, wherein the one or more cut portions extend from the inner surface of the sound absorbing member toward the tire outer surface side, and terminate in the middle of the sound absorbing member. ### Claim 18 (depends on 7) The pneumatic tire according to claim 7, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member. ### Claim 19 (depends on 8) The pneumatic tire according to claim 8, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member. ### Claim 20 (depends on 9) The pneumatic tire according to claim 9, wherein the sound absorbing member has one or more reforming portions on an inner surface of the sound absorbing member, each extending in a width direction of the sound absorbing member.