Pneumatic tire

Details Pneumatic tire Pneumatic tire

2006-12-06

2009-06-30

Fischer, Justin (Department: 1791)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S539000, C152S554000

Reexamination Certificate

active

07552754

ABSTRACT:
A pneumatic radial tire has at least one carcass reinforcing ply and a pair of opposing bead portions. Each bead portion has a bead core and a bead apex, while the carcass reinforcing ply has a main portion and two turnups, with one turnup extending from each end of the main portion and having a terminal end. In each bead portion, there is a minimum distance DMINbetween the carcass main portion and the carcass turnup, as measured perpendicular to the tire equatorial plane EP. The distance DMINis not less than 50% of the maximum bead core width WBas measured perpendicular to the equatorial plane EP. In each bead portion, radially outward of the minimum distance DMIN, a radially outermost portion of the carcass turnup extends at an angle so the radially outermost portion of the carcass turnup is divergent from the carcass main portion.

REFERENCES:
patent: 3612137 (1971-10-01), Guyot
patent: 4705091 (1987-11-01), Iuchi
patent: 5080158 (1992-01-01), Kawamura
patent: 5433257 (1995-07-01), Yamaguchi et al.
patent: 6260597 (2001-07-01), Miyazono
patent: 6427743 (2002-08-01), Ueyoko et al.
patent: 2004/0007305 (2004-01-01), Ueyoko
European Search Report, completed Sep. 25, 2008.

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