Heavy duty tire

Details Heavy duty tire Heavy duty tire

2011-06-07

2011-06-07

Fischer, Justin (Department: 1747)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S540000, C152S541000, C152S542000, C152S546000, C152S547000

Reexamination Certificate

active

07954529

ABSTRACT:
A heavy duty tire comprises: a carcass ply of cords extending between bead portions; and a bead reinforcing layer disposed in each of the bead portion. The carcass ply has edges winded around the bead cores so that the winded portion has a base part extending along the bead core from the axially inside to the axially outside thereof, and a radially outer part extending axially inwards on the radially outside of the bead core. The bead reinforcing layer comprises: a curved portion extending along the base part; an axially outer portion extending radially outwardly, separation from the base part; and an axially inner portion extending radially outwardly along a main portion of the carcass ply. The bead reinforcing layer is composed of a ply of cords laid side by side, and the spacing Da of the cords in an axially outer part beneath the bead core, of the curved portion is not less than 1.5 times and not more than 3.0 times the spacing Db of the cords in the axially outer portion.

REFERENCES:
patent: 6354351 (2002-03-01), Miyazono
patent: 2006/0207710 (2006-09-01), Yoshikawa et al.
patent: 2005-178618 (2005-07-01), None

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