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:
Apr. 03, 2012
Filed:
Apr. 24, 2009
Kiyoto Maruoka, Kobe, JP;
Kiyoto Maruoka, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
A heavy-duty pneumatic tire includes a carcass ply turned up around a bead core in each bead portion from the inside to the outside of the tire so as to have a pair of turnup portions and a main portion therebetween; and a bead apex and an L-shaped reinforcing cord layer. The bead apex includes: an L-shaped high-modulus inner bead apex including a base part and a radial part; and a delta-shaped low-modulus outer bead apex disposed on the radially outside of the base part of the L-shaped inner bead apex and on the axially outside of the radial part of the L-shaped inner bead apex. The L-shaped reinforcing cord layer is made up of an radially inner part extending on the radially inner side of the bead core, and an radially outer part extending along the axially outer surface of the carcass ply turnup portion.