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:
May. 26, 2015
Filed:
Feb. 27, 2013
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Kei Kohara, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;
Abstract
A rigid core for forming a tire is configured so that the non-uniformity of the amount of thermal expansion of the core body is reduced to improve the quality of the tire. The core body comprises divided core pieces () divided inward and outward in a tire radial direction at a tire radial position (P) including a maximum width position (P) of the tire forming surface. Outward divided core pieces () disposed outward in the tire radial direction than the maximum width position (P) and inward divided core pieces () disposed inward in the tire radial direction than the maximum width position (P) are respectively formed of metal materials different from each other in coefficient of thermal expansion. The coefficient of thermal expansion of the inward divided core piece () is higher than a coefficient of thermal expansion of the outward divided core piece ().