Invention Grant
- Patent Title: Pneumatic tire
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Application No.: US14170743Application Date: 2014-02-03
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Publication No.: US09757991B2Publication Date: 2017-09-12
- Inventor: Masao Tagashira , Hiroyuki Nakayama
- Applicant: Sumitomo Rubber Industries, Ltd.
- Applicant Address: JP Kobe-Shi
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Kobe-Shi
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2013-030360 20130219; JP2013-102442 20130514; JP2013-117159 20130603; JP2013-117160 20130603
- Main IPC: B60C11/03
- IPC: B60C11/03 ; B60C11/12

Abstract:
A pneumatic tire is provided in the tread portion with a central land portion between two crown main grooves. The central land portion is provided with notches each having a depth of 55% to 65% of the depth of the crown main groove and having a closed end and an open end opening to the crown main groove.The maximum axial length of the central notch is 10% to 15% of the maximum axial length of the central land portion, and the circumferential length of the opening is 10% to 15% of one circumferential pitch of the shoulder block row 7R.The circumferential length of the opening is 15% to 25% of one circumferential pitch of the central notches.
Public/Granted literature
- US20140230983A1 PNEUMATIC TIRE Public/Granted day:2014-08-21
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