Invention Grant
- Patent Title: Heavy duty tire and method for manufacturing the same
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Application No.: US15891020Application Date: 2018-02-07
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Publication No.: US11198329B2Publication Date: 2021-12-14
- Inventor: Atsushi Maehara
- Applicant: Sumitomo Rubber Industries, Ltd.
- Applicant Address: JP Kobe
- Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee: Sumitomo Rubber Industries, Ltd.
- Current Assignee Address: JP Kobe
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2017-021478 20170208,JPJP2017-231954 20171201
- Main IPC: B60C11/11
- IPC: B60C11/11 ; B60C11/13 ; B60C11/00 ; B60C11/03 ; B29D30/06 ; B60C9/28 ; B60C3/04

Abstract:
A heavy-duty tire includes a tread portion including a crown land portion, a shoulder land portion with a tread edge and a middle land portion disposed therebetween. In a tire cross-section of a 5% inflated state, the tread portion comprises a surface profile which comprises an inner arc portion having a radius (R1) of curvature with a center located in a tire equatorial plane and an outer arc portion having a radius (R2) of curvature smaller than the radius (R1) of curvature of the inner arc portion and intersecting the inner arc portion at an inflection point (P). The inflection point (P) is located on the middle land portion, wherein a distance (Lp) in the tire axial direction from the tire equatorial plane to the inflection point (P) is in a range of from 0.35 to 0.50 times a tread half-width (Wt).
Public/Granted literature
- US20180222255A1 HEAVY DUTY TIRE AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2018-08-09
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