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:
Apr. 07, 2015
Filed:
Jul. 09, 2009
Ryoichi Watabe, Nakano-ku, JP;
Ryoichi Watabe, Nakano-ku, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
Provided is a studless tire capable of achieving both the traction performance and the steering stability at the time of traveling on the ice and snow at a high level. A tread surfaceis disposed on the studless tire such that, among lateral groovesA,B,C,D,extending in an axial direction within each block arrayA,B,C,D, an axial length of a lateral grooveA,B,C,D opening to at least one straight circumferential grooveA,B adjacent to the block array provided with the lateral groove is referred to as a groove edge component, a proportion of the total length of the groove edge components on the inner tread surface IN to the total length of the groove edge components on the outer tread surface OUT is 1.03-1.3, and, a proportion of a negative ratio of the outer side surface OUT to a negative ratio of the inner side surface IN is 0.85-1.0.