Invention Grant
US09409446B2 Pneumatic radial tire with tread having blocks having waved sipes
有权
具有胎面的气动子午线轮胎具有具有波形刀槽花纹的块
- Patent Title: Pneumatic radial tire with tread having blocks having waved sipes
- Patent Title (中): 具有胎面的气动子午线轮胎具有具有波形刀槽花纹的块
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Application No.: US12667572Application Date: 2008-07-01
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Publication No.: US09409446B2Publication Date: 2016-08-09
- Inventor: Ryoichi Watabe , Koujiro Yamaguchi
- Applicant: Ryoichi Watabe , Koujiro Yamaguchi
- Applicant Address: JP Tokyo
- Assignee: BRIDGESTONE CORPORATION
- Current Assignee: BRIDGESTONE CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2007-177502 20070705
- International Application: PCT/JP2008/061897 WO 20080701
- International Announcement: WO2009/005056 WO 20090108
- Main IPC: B60C11/12
- IPC: B60C11/12 ; B60C11/11

Abstract:
The present invention provides a pneumatic radial tire which is, by effectively suppressing collapse-deformation of a relatively large magnitude in sectioned portions of each block, which sections are demarcated by sipes, and also effectively preventing the sipe from making narrowing-deformation, excellent in not only driving performance and braking performance on an icy or snowy road but also driving stability on a general road. The tire characteristically includes: a tread having a contact surface 1; plural circumferential grooves 2; plural lateral grooves 3; blocks 4 demarcated by the circumferential grooves and the lateral grooves in the contact surface of the tread; and plural sipes 5 provided in the blocks 4, wherein the bottom portion of each sipe 5 is provided with at least one upward-protruding projection 7 for integrally connecting respective facing groove walls of the sipe 5.
Public/Granted literature
- US20100212794A1 PNEUMATIC RADIAL TIRE Public/Granted day:2010-08-26
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