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:
Jun. 15, 2004
Filed:
Jan. 29, 2001
Kouichi Nakamura, Tokyo, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A pneumatic tire having a tread pattern is provided, in which occurrence of uneven wear observed in a conventional lug-type tread pattern can be prevented without causing degradation in the various characteristics of the tire. The pneumatic tire having a tread pattern in which main lug grooves are disposed in the opposing tread shoulder regions at a predetermined pitch in the circumferential direction of the tire. The main lug grooves are so arranged as to provide circumferential phase difference between the opposing tread shoulder regions. In this construction, a narrow shallow groove is disposed in the central region of the tread portion in the tread width direction for connecting the main lug grooves located in the opposing tread shoulder regions, and a shallow groove portion is formed in the shoulder end region inside the main lug groove.