Tire with additional ring and bead having a seat inclined...

Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube

Reexamination Certificate

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Details

C152S455000, C152S539000, C152S543000

Reexamination Certificate

active

07059373

ABSTRACT:
The invention concerns a tire comprising at least a first and a second bead radially extending to at least a first and a second sidewall, respectively, and the sidewalls being joined to a tread; said first bead having a seat the generatrix of which has its axially inner end on a circle of diameter greater than the diameter of the circle on which is located the axially outer end. The tire further comprises a carcass reinforcement formed of at least one carcass ply and anchored in the first bead to at least one annular bead anchoring element. When the tire is mounted on its operating rim and inflated to its recommended pressure, the meridian profile of the carcass reinforcement has a tangent to the point of tangency of the meridian profile with the anchoring element of the first bead that forms, relative to the axis of rotation, an angle open towards the outside and at most equal to 70°. The sidewall further comprises an inextensible additional sidewall ring located axially to the inside of at least an axially outermost carcass reinforcement ply and a profiled rubber mix element located radially between the annular anchoring element of the bead and the additional ring of the sidewall and axially located to the inside of the axially outermost ply.

REFERENCES:
patent: 2186178 (1940-01-01), Shoemaker
patent: 3253636 (1966-05-01), Travers
patent: 3631913 (1972-01-01), Boileau
patent: 3994329 (1976-11-01), Masson et al.
patent: 4124679 (1978-11-01), DeWitt
patent: 4177852 (1979-12-01), Merli et al.
patent: 4307767 (1981-12-01), Calori
patent: 4345634 (1982-08-01), Giron
patent: 4700765 (1987-10-01), Masclaux
patent: 5285835 (1994-02-01), Ueyoko et al.
patent: 5479977 (1996-01-01), Tamano et al.
patent: 5509455 (1996-04-01), Warchol et al.
patent: 5836366 (1998-11-01), Muhlhoff
patent: 5971047 (1999-10-01), Drieux et al.
patent: 6491077 (2002-12-01), Lopez et al.
patent: 6554038 (2003-04-01), Chandezon et al.
patent: 6598644 (2003-07-01), Eynard
patent: 6688354 (2004-02-01), Drieux et al.
patent: 2002/0046795 (2002-04-01), Billieres
patent: 2003/0136488 (2003-07-01), Muhlhoff
patent: 26 04 431 (1977-08-01), None
International Search Report—PCT/EP01/15164.
International Preliminary Examination Report—PCT/EP01/15164.

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