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:
Nov. 05, 2002
Filed:
Nov. 01, 1999
Naruhiro Akiyama, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
Method and apparatus for manufacturing pneumatic tires, wherein a green case comprised of at least one inner liner rubber member and a carcass ply member is formed on a first drum and transferred to a position around a second drum. The green case is the fixedly secured to the second drum by axially moving a pair of centering elements in opposite directions into pressure contact with opposite inner sides at the bead portions of the green case, and urging the inner peripheries of the bead portions by a pair of lock elements. The second drum is then caused to expand and undergo a width reduction, thereby expanding the green case into a toroidal shape. Sidewall rubber members, which have been previously wound on a pair of side bladders on the outer side of the lock elements, are expanded and reversed by inflating the side bladders and joined to the toroidal green case to thereby form a green tire.