Heavy duty pneumatic radial tire with carcass ply winding-up...

Details Heavy duty pneumatic radial tire with carcass ply winding-up... Heavy duty pneumatic radial tire with carcass ply winding-up...

2007-01-23

2007-01-23

Johnstone, Adrienne C. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S543000, C152S547000, C152S552000, C152S564000

Reexamination Certificate

active

10967300

ABSTRACT:
A heavy duty pneumatic radial tire includes a carcass ply, in which a ply folding portion folding a bead core is successively disposed in a ply body. The ply folding portion includes a main portion folded along the bead core, and a winding-up portion extending continuously to the main portion and apart from the bead core. The winding-up portion extends with an inclination of an angle θ in a direction in which a diameter is increased inward in the tire axial direction, the angle θ being set to 20 to 65 degrees with respect to an upper surface in the radial direction of the bead core, a distance La from the upper surface in the radial direction of the bead core at the inner end point of the winding-up portion being set to 5 mm to 15 mm, and a distance Lb between the inner end point of the winding-up portion and the ply body being set to 1 mm to 5 mm.

REFERENCES:
patent: 2888058 (1959-05-01), Manis et al.
patent: 2982328 (1961-05-01), Luigi et al.
patent: 2002/0033219 (2002-03-01), Ueyoko
patent: 2004/0194864 (2004-10-01), Saeki
patent: 2005/0006018 (2005-01-01), Maruoka et al.
patent: 64036509 (1989-02-01), None
patent: 08-040026 (1996-02-01), None
patent: 11-321244 (1999-11-01), None
patent: 2000-219016 (2000-08-01), None
patent: WO-02/102612 (2002-12-01), None
English machine translation of JP 8-40026 A.

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