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:
Sep. 18, 2007
Filed:
Jan. 17, 2003
Atsushi Miyasaka, Kodaira, JP;
Hajime Nakamura, Kodaira, JP;
Atsushi Miyasaka, Kodaira, JP;
Hajime Nakamura, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
To provide a pneumatic tire for a motorcycle in which both wear resistance and wet steering stability can be attained. Since a pair of zigzag circumferential direction groovesare positioned at the center of a tread central regionC and has an amplitude, even when a certain camber angle is exceeded, an occurrence of a sudden separation of the zigzag circumferential direction groovefrom a road-contact surfacecan be prevented, whereby deterioration of wet steering stability can be suppressed. When the camber angle increases, water in a road-contact surfaceis drained by inclining grooveswhich are arranged at an external side of the zigzag circumferential direction groove. Since sharp inclining groove portionsA of the inclining groovesare positioned in the tread central regionC, and no lug groove components are employed, circumferential direction rigidities of land portions in the tread central regionC are high and exhibits excellent wear resistance. Since loose inclining groove portionsB and sub-inclining groovesof the inclining groovesare positioned in tread side regionsS, rigidities of land portionsresisting to inputs at the time of a large camber angle are high, and accordingly, wear resistance is high.