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.:
Date of Patent:
Dec. 25, 2012
Filed:
Oct. 09, 2008
Shingo Takahashi, Kobe, JP;
Satoshi Tsuda, Kobe, JP;
Shingo Takahashi, Kobe, JP;
Satoshi Tsuda, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
It aims to provide a heavy duty pneumatic tire with block patterns and capable of improving deflected wear resisting performances without sacrificing wet grip performances or on-snow performances and that can particularly be favorably used for all seasons. The present invention comprises block patterns employing at least three types of blockscomprised of central blocksC delimited by the central longitudinal grooveM, the intermediate longitudinal groovesM, and the central lateral groovesC, intermediate blocksM delimited by the intermediate longitudinal groovesM, the outer longitudinal groovesS and the intermediate lateral groovesM, and outer blocksS that are delimited by outer longitudinal groovesS, outer lateral groovesS that extend from this outer longitudinal groovesS to the tread ends E, and wherein longitudinal length ratios (L/W) of blocks, groove width ratios of longitudinal grooves and lateral grooves (w/w), maximum widths of blocks, minimum widths of blocks and ratios thereof (Wmax/Wmin), and circumferential edge components and tire axial edge components and ratios thereof (EC/EL) at respective stages of wear are defined to be within specified ranges.