Invention Grant
- Patent Title: Pneumatic tire with tread having sipes and shallow grooves
- Patent Title (中): 具有胎面的气动轮胎具有刀槽花纹和浅槽
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Application No.: US11791768Application Date: 2005-11-30
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Publication No.: US08020595B2Publication Date: 2011-09-20
- Inventor: Yukihiro Kiwaki , Ryoichi Watabe , Kenichi Shibata , Kazuyoshi Tagawa
- Applicant: Yukihiro Kiwaki , Ryoichi Watabe , Kenichi Shibata , Kazuyoshi Tagawa
- Applicant Address: JP Tokyo
- Assignee: Bridgestone Corporation
- Current Assignee: Bridgestone Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2004-345848 20041130; JP2004-345851 20041130; JP2004-345866 20041130
- International Application: PCT/JP2005/021983 WO 20051130
- International Announcement: WO2006/059640 WO 20060806
- Main IPC: B60C11/12
- IPC: B60C11/12

Abstract:
A plurality of shallow grooves which are shallower than a sipe are formed on land sections formed on treads of a pneumatic tire. The shallow grooves are configured so that a total sectional area of the shallow grooves per unit area in a cross section in a tire width direction in at least one of tread end areas arranged at end sides of the tread surface in the tire width direction or land end areas arranged at portions adjacent to a drain main groove on the land sections becomes larger than a total sectional area of the shallow grooves per unit on the other areas.
Public/Granted literature
- US20080135150A1 Pneumatic Tire Public/Granted day:2008-06-12
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