Invention Grant
- Patent Title: Pneumatic tire with reinforcement rubber layer
- Patent Title (中): 带增强橡胶层的气动轮胎
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Application No.: US10555648Application Date: 2004-05-12
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Publication No.: US07546863B2Publication Date: 2009-06-16
- Inventor: Naoya Amino , Katsunori Tanaka , Atsushi Tanno
- Applicant: Naoya Amino , Katsunori Tanaka , Atsushi Tanno
- Applicant Address: JP Tokyo
- Assignee: The Yokohama Rubber Co., Ltd.
- Current Assignee: The Yokohama Rubber Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Greer, Burns & Crain, Ltd.
- Priority: JP2003-171961 20030617
- International Application: PCT/JP2004/006377 WO 20040512
- International Announcement: WO2004/113099 WO 20041229
- Main IPC: B60C1/00
- IPC: B60C1/00 ; B60C13/00 ; B60C15/06

Abstract:
A pneumatic tire allowed to increase steering stability and durability while reducing rolling resistance, wherein a reinforced rubber layer extending from a bead part along a side wall part is installed in the side wall part. A rubber composition forming the reinforced rubber layer has a loss of tangent (tan δ) measured at 60° C. of 0.01 to 0.25, a JIS-A hardness measured at 23° C. of 70 to 95, and a breaking elongation in a tension test measured at 23° C. of 200% or more.
Public/Granted literature
- US20070000591A1 Pneumatic tire Public/Granted day:2007-01-04
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