Tire for heavy load use

Details Tire for heavy load use Tire for heavy load use

2006-03-14

2006-03-14

Johnstone, Adrienne C. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S552000

Reexamination Certificate

active

07011127

ABSTRACT:
A tire for heavy load use includes a carcass ply made of steel cords including ply turn-up portions that are turned up around bead cores from inside to outside in a tire axial direction. Each ply turn-up portion includes a turn-up sub-portion that is first turned up around the bead core and that extends in an inclined manner towards the ply main portion at an angle θ, that is less than 90°, with respect to an outer surface of the bead core in the tire radial direction. The steel cords of the turn-up sub-portion include piercing steel cords that pass through the steel cords of the ply main portion. As a result, the durability of the bead portions is improved while achieving a light-weighted structure.

REFERENCES:
patent: 2005/0006018 (2005-01-01), Maruoka et al.
patent: 11-321244 (1999-11-01), None
patent: 2000-219016 (2000-08-01), None

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