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公开(公告)号：US20210061013A1
公开(公告)日：2021-03-04
申请号：US16926999
申请日：2020-07-13
发明人： Yuma WATANABE , Yasuaki KUNIYASU
摘要： A pneumatic tire comprises: a bead portion provided with an inside bead apex rubber disposed between a turned up portion and a main portion of a carcass ply, and an outside bead apex rubber disposed axially outside the turned up portion and having a radially outer edge; and a the sidewall portion provided with a sidewall reinforcing cord layer disposed axially outside the carcass and having a radially inner edge which is spaced apart from the radially outer edge of the outside bead apex rubber by a radial distance of not less than 5% of a tire section height.
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公开(公告)号：US20170274710A1
公开(公告)日：2017-09-28
申请号：US15508682
申请日：2015-09-03
发明人： Tadao MATSUMOTO , Yasutaka IWATA , Kentaro YAGYU , Fumikazu YAMASHITA , Shingo UMEKITA , Yasuaki KUNIYASU , Hiroaki NINOMIYA
IPC分类号： B60C15/06
摘要： In the tire 2, fillers 10 are layered over clinches 8 in portions outward of a carcass 14 in the axial direction. A carcass ply 50 is turned up around cores 44. Turned-up portions 50a are disposed between the fillers 10 and apexes 46. Each clinch 8 has a maximum thickness Tcx that is measured along a line normal to an inner surface, in the axial direction, of the clinch 8. A ratio of a thickness Tf1 of the filler 10 to a sum of the thickness Tf1 and the thickness Tcx is greater than or equal to 0.1 and not greater than 0.6. A percentage of a complex elastic modulus E*f of the filler 10 relative to a complex elastic modulus E*a of the apex 46 is greater than or equal to 70% and not greater than 125%.
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