Invention Grant
- Patent Title: Pneumatic tire
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Application No.: US16768643Application Date: 2018-11-21
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Publication No.: US11524531B2Publication Date: 2022-12-13
- Inventor: Atsushi Tanno , Hiraku Koda , Jun Matsuda
- 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
- Priority: JPJP2017-232079 20171201
- International Application: PCT/JP2018/043079 WO 20181121
- International Announcement: WO2019/107253 WO 20190606
- Main IPC: B60C15/00
- IPC: B60C15/00 ; B60C15/04 ; B60C15/06

Abstract:
In a pneumatic tire, bead cores have a wire arrangement. In a cross-sectional view in a tire meridian direction, a tangential line and a contact point are defined. The tangential line contacts an innermost layer in a radial direction and the wire cross sections innermost and outermost in a lateral direction in the wire arrangement from a rim fitting surface side. The contact point of the tangent line is on the wire cross section on the outermost side. A gauge Wh in the lateral direction from the contact point to the rim fitting surface and an outer diameter φ of the bead wire have a relationship 2.0≤Wh/φ≤15.0. A radial height H2 of a contact portion between a body portion and a turned back portion of a carcass layer has a relationship 0.80≤H2/H1≤3.00 to a radial height H1 of the bead cores.
Public/Granted literature
- US11554615B2 Pneumatic tire Public/Granted day:2023-01-17
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