发明授权
US5221385A Pneumatic radial tire with noise suppressing rubber sheet in the bead
region
失效
气动子午线轮胎，胎圈区域具有噪音抑制橡胶片
- 专利标题： Pneumatic radial tire with noise suppressing rubber sheet in the bead region
- 专利标题（中）： 气动子午线轮胎，胎圈区域具有噪音抑制橡胶片
-
申请号： US745806申请日： 1991-08-16
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公开(公告)号： US5221385A公开(公告)日： 1993-06-22
- 发明人: Ryoji Hanada , Makoto Misawa
- 申请人： Ryoji Hanada , Makoto Misawa
- 申请人地址： JPX Tokyo
- 专利权人： The Yokohama Rubber Co., Ltd.
- 当前专利权人： The Yokohama Rubber Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-334898 19881230
- 主分类号： B60C15/06
- IPC分类号： B60C15/06
摘要：
A pneumatic radial tire having a rubber sheet incorporated in a region lying between a bead core and at least an outer surface portion of the bead portion which is in contact with a rim on which the tire is mounted, to suppress the noise generation. The rubber sheet has a dynamic modulus of elasticity at 20.degree. C., E'(20.degree. C.), of 6.0 MPa to 14.0 MPa and a ration of the dynamic modulus E'(20.degree. C.) to a dynamic modulus of elasticity at 60.degree. C., E'(60.degree. C.), namely E'(20.degree. C.)/E'(60.degree. C.), of at least 1.2 but less than 1.4.
公开/授权文献
- US4672749A Mechanical perspective drafting device 公开/授权日：1987-06-16
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