Pneumatic tire

Details Pneumatic tire Pneumatic tire

2006-08-22

2006-08-22

Fischer, Justin R. (Department: 1733)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S540000, C152S545000, C152S552000

Reexamination Certificate

active

07093636

ABSTRACT:
The invention can firmly fix both ends of a carcass ply while maintaining a weight saving and an effect of inhibiting a bead damage high. A pneumatic tire is provided with a bead core (5) constituted by core separated pieces (20U,20L) separated into upper and lower sides in a radial direction, a bead apex rubber (8) extending from an upper surface thereof to an upper side in the radial direction, and a carcass ply (6A) having a ply lock portion (11) locked to the bead core (5). The ply lock portion (11) is provided with an apex and core horizontal ply portion (31) pinched between the bead core (5) and the bead apex rubber (8), or a core lower ply portion (32) extending along a lower surface of the lower core separated piece (20L), or a lower middle vertical ply portion (33Lm) pinched between separated portions (20Li,20Lo) formed by separating the lower core separated piece (20L) into inner and outer portions in a tire axial direction, in addition to a separated piece horizontal ply portion (30) pinched between the core separated pieces (20U,20L).

REFERENCES:
patent: 0 467 277 (1992-01-01), None
patent: 58 105806 (1983-09-01), None
patent: 11-28915 (1999-02-01), None
patent: 11 301224 (1999-11-01), None

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