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. 04, 1990
Filed:
May. 25, 1989
Peter R Shepler, Stow, OH (US);
Nathan A Gammon, Akron, OH (US);
William M Hopkins, Hudson, OH (US);
James E Koerner, Uniontown, OH (US);
Charles K Schmalix, Canal Fulton, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A tread for a unidirectional pneumatic tire has first, second and third circumferentially extending zones. The edges of the zones are parallel to the equatorial plane of the tire. The width of the first zone is between 25% and 50% of the tread width, the width of the second zone is between 15% and 35%, and the width of the third zone is between 25% and 50%. The first zone has substantially aligned lateral wide groove segments extending across the width of the first zone. The segments form an angle between 70 and 90 degrees with a plane in the first zone parallel to the equatorial plane. The second zone has substantially aligned lateral wide groove segments extending across the width of the second zone. The segments form an angle between 10 and 45 degrees with a plane in the second zone parallel to the equatorial plane. The third zone has substantially aligned lateral wide groove segments extending across the width of the third zone which are generally perpendicular to the lateral wide groove segments of the second zone. The segments form an angle between 45 and 70 degrees with a plane in the third zone parallel to the equatorial plane.