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:
Aug. 30, 2005
Filed:
Dec. 12, 2002
Takeo Masaki, Hiratsuka, JP;
Takeo Masaki, Hiratsuka, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
A pneumatic tire according to the present invention includes a tread surface having a tire rotation direction designated in one direction. The tread surface has a straight main groove extending in a circumferential direction of the tire in the center, and lateral grooves obliquely extending in a width direction of the tire on both sides thereof, defining blocks thereon. On both sides of the straight main groove, left and right slant main grooves are arranged to cross three or more lateral grooves. Both ends of-the slant main grooves are positioned within the blocks, and the groove width thereof is gradually enlarged from both end portions toward the center portion of the slant main groove. The inclination angle of the slant main grooves relative to the tire circumferential direction is set in a range of 10 to 45°, and the maximum groove width thereof is set to 80 to 110% of the groove width of the straight main groove.