The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8991449 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 31, 2015

Filed:

May. 07, 2009
Applicant:

Akio Ikeda, Kobe, JP;

Inventor:

Akio Ikeda, Kobe, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C 11/11 (2006.01); B60C 11/12 (2006.01); B60C 11/03 (2006.01);
U.S. Cl.
CPC ...
B60C 11/11 (2013.01); B60C 2011/0348 (2013.04); B60C 11/0306 (2013.04); B60C 11/12 (2013.01); B60C 2011/0388 (2013.04); B60C 2011/1213 (2013.04);
Abstract

A pneumatic tireis provided in a tread portionwith four main circumferential grooveshaving a groove width HG of not less than 4 mm, thereby dividing the tread portion into a central land portion, a pair of middle land portions, and a pair of shoulder land portions. Each land portions, andis made of block rows Bc, Bm, and BS divided by axial grooves, and each blockhas sipes. An axial width Wc of the central land portionis 10 to 15% of a tread ground contacting width TW; an axial width Wm of the middle land portionis 15 to 22% of the tread ground contacting width TW; and an axial width Ws of the shoulder land portionis 15 to 22% of the tread ground contacting width TW. The middle land portionis divided into an axially inner partand an axially outer parteach having a groove width HG of in a range of 2 to 6 mm in the tire circumferential direction.


Find Patent Forward Citations

Ikeda, Akio. (2015). Pneumatic tire with tread having central land portion, middle land portions and shoulder land portions (U.S. Patent No. 8991449). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8991449

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