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:
Apr. 03, 1990
Filed:
Jan. 21, 1988
Norman D Anderson, Uniontown, OH (US);
Harold D Fetty, Asheville, NC (US);
Deborah K Vaughn, Mogadore, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A pneumatic tire (10) having a tread (12), carcass (70), sidewalls (14), bead portions (18) and an annular reinforcing structure or belt structure (76). The tread (12) has two different types of circumferential grooves. Two circumferential straight grooves (20) divide the tire into three circumferentially extending portions (24,26,28). Each portion is further divided by a circumferentially extending zig-zag groove (22) or an 'S' shaped groove. Each portion is then divided into blocks (30) by a plurality of axially extending grooves (32). The tread-reinforcing structure (76) has two belt plies (78,80) of steel cords (82), the cords of one are oriented at an angle A, with respect to the mid-circumferential centerplane (MC), while the cords of the other are oriented at an angle B, where angle B is less than angle A. The difference between angle A and angle B is greater than one degree and less than or equal to four degrees.