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. 11, 1996
Filed:
Sep. 13, 1994
Yoshiyuki Takada, Akashi, JP;
Keiji Yasufuku, Akashi, JP;
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Abstract
A heavy duty tire having an improved tread wear resistance, which comprises a tread portion provided on each side of the tire equator with a wide circumferential groove and a narrow circumferential groove. The wide circumferential groove is spaced apart from the tire equator by an axial distance of 15 to 25% of the tread width. The narrow circumferential groove is disposed on the axially inside of the wide circumferential groove and spaced apart from the axially inner groove edge of the wide circumferential groove by an axial distance of 0.02 to 0.05 times the tread width. The depth of the wide circumferential groove is in the range of 0.05 to 0.08 times the tread width. The depth of the narrow circumferential groove is in the range of 0.7 to 1.0 times the depth of the wide circumferential groove. The groove width of the narrow circumferential groove is in the range of 1.5 to 2.5 mm.