Invention Grant
- Patent Title: Run-flat tire
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Application No.: US16956525Application Date: 2018-11-22
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Publication No.: US11697308B2Publication Date: 2023-07-11
- Inventor: Takanori Uemura
- Applicant: The Yokohama Rubber Co., LTD.
- Applicant Address: JP Tokyo
- Assignee: The Yokohama Rubber Co., LTD.
- Current Assignee: The Yokohama Rubber Co., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Thorpe North & Western LLP
- Priority: JP 17246764 2017.12.22
- International Application: PCT/JP2018/043265 2018.11.22
- International Announcement: WO2019/123973A 2019.06.27
- Date entered country: 2020-06-19
- Main IPC: B60C9/18
- IPC: B60C9/18 ; B60C9/20 ; B60C11/13 ; B60C17/00 ; B60C11/00 ; B60C11/03

Abstract:
A run-flat tire includes a belt reinforcing layer outward of a belt layer in a tire radial direction and reinforcing rubber in sidewall portions. Where a center region is a region of a tread portion in which a center land portion corresponding to a land portion included in land portions in a tread portion and located closest to a tire equatorial plane is positioned, the belt reinforcing layer includes a center reinforcing portion in which more pieces of the belt reinforcing layer are layered at a position of the center region than at positions other than the position of the center region, and in the belt reinforcing layer, a width Wc of the center reinforcing portion in a tire lateral direction with respect to a thickness Gr of the side reinforcing rubber at a tire maximum width position is within a range of 0.5 Gr≤Wc≤2.0 Gr.
Public/Granted literature
- US20220134804A1 Run-Flat Tire Public/Granted day:2022-05-05
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