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. 19, 2000
Filed:
Sep. 19, 1997
Hideaki Sugihara, Amagasaki, JP;
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Abstract
A pneumatic tire has a tread portion with one circumferential wide groove extending continuously in the circumferential direction. A centroid of the cross-section of the circumferential wide groove deviates from the tire's equatorial plane so as to divide the tread part into a narrow tread section and a broad tread section. One of the groove walls extends along a curve convexed outwardly in the tire radial direction from one of the bottom edges of the circumferential wide groove and is smoothly connected to the outer surface of the tread portion. When the tire is mounted on a regular rim, inflated with regular internal pressure and applied with a normal load, the groove width GW of the circumferential wide groove is defined to be not less than 35 mm and not more than 0.35 times the ground contact width TW of the tread part.