Invention Grant
- Patent Title: Pneumatic tire with specified outer carcass periphery length and outer ground-contact area
- Patent Title (中): 具有特定外胎周长和外接地面积的气动轮胎
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Application No.: US11662472Application Date: 2005-08-29
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Publication No.: US08151843B2Publication Date: 2012-04-10
- Inventor: Shigemasa Ishii , Nobuaki Toyosato
- Applicant: Shigemasa Ishii , Nobuaki Toyosato
- Applicant Address: JP Tokyo
- Assignee: Bridgestone Corporation
- Current Assignee: Bridgestone Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPP2004-265960 20040913
- International Application: PCT/JP2005/015612 WO 20050829
- International Announcement: WO2006/030619 WO 20060323
- Main IPC: B60C3/06
- IPC: B60C3/06 ; B60C9/17 ; B60C11/03

Abstract:
A pneumatic tire 1 according to the invention has bead portions 11, 12 including bead cores 11a, 12a, and at least a carcass layer 13 and a tread portion 16 arranged, wherein in a section in a tire-width direction, assuming as a reference a tire centerline CL making right angles with a bead line BL interconnecting a center of the bead core 11a and a center of the bead core 12a, and passing a center of the bead line BL, an outer ground-contact area 20B is wider by 5 to 15% than an inner ground-contact area 20B, and wherein in the section in the tire-width direction, a carcass periphery length as a distance along a carcass centerline CaL from a crossing point P to an approach point P2 is longer by 0.5 mm to 10 mm than a carcass periphery length Ca as a distance from the crossing point P to an approach point P1.
Public/Granted literature
- US20080149239A1 Pneumatic Tire Public/Granted day:2008-06-26
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