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:
Feb. 11, 2014
Filed:
Jul. 05, 2005
Kentaro Saeki, Tokyo, JP;
Kentaro Saeki, Tokyo, JP;
Kabushiki Kaisha Bridgestone, Tokyo, JP;
Abstract
A pneumatic tire is molded by using a vulcanizing mold in which blades, each composed of a metal thin plate having an inclined portionin the depth direction and a plurality of through holesG with the same sectional form as that of projections to be formed in the sipe in the inclined portionare buried in a groove portion corresponding to the tire block of the vulcanizing mold, thereby forming 3D sipes having unevenness in the radial direction of the block and a plurality of pairs of projections in the inclined portion in the block of the tire. Thereby, when longitudinal force is applied to the tire, adjacent small blocks of the block come into close contact with each other only at the positions of the projections of the 3D sipes, thereby making it possible to ensure the block stiffness of the pneumatic tirewithout reducing the drainage function.