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. 07, 2010
Filed:
Jan. 09, 2007
Aaron Scott Puhala, Kent, OH (US);
Rachel Rebekah Barnette, Akron, OH (US);
David Charles Poling, Uniontown, OH (US);
Eric John Marazzi, Tallmadge, OH (US);
Kuo-chih Hua, Richfield, OH (US);
Shingo Futamura, Wadsworth, OH (US);
Aaron Scott Puhala, Kent, OH (US);
Rachel Rebekah Barnette, Akron, OH (US);
David Charles Poling, Uniontown, OH (US);
Eric John Marazzi, Tallmadge, OH (US);
Kuo-Chih Hua, Richfield, OH (US);
Shingo Futamura, Wadsworth, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
The invention relates to a tire having a circumferential tread of a cap/base configuration composed of an outer tread rubber cap layer with a running surface of the tread and an underlying tread rubber base layer, wherein said tread cap layer is composed of two longitudinal adjacent zones, namely a primary tread cap zone and a minor lateral outboard control element (zone). The primary tread cap zone and the lateral outboard tread cap element provide a significant gradation of cold dynamic storage moduli (G') at −25° C. and hot tan delta values at 100° C., yet similar warm dynamic storage moduli (G′) at 60° C. The primary tread cap zone and lateral outboard control tread cap element are load bearing in the sense of extending from the running surface of the tread radially inward to the unitary (non-zoned) tread base rubber layer. The zoned rubber tread cap layer and unitary rubber tread base layer are an integral tread composite in a sense of being co-extruded. In one aspect of the invention, the primary tread cap zone rubber composition is silica-rich and the lateral, outboard element rubber composition is carbon black-rich and which furthermore provide a gradation of filler reinforcement content; provide a gradation of silica to carbon black ratio and provide a gradation of cis 1,4-polybutadiene rubber content.