Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1992-11-16
1995-05-09
Johnstone, Adrienne
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152517, 152549, 152555, B60C 1704, B60C 1706
Patent
active
054131600
ABSTRACT:
A tire, intended to be inflated but capable of running in a deflated condition, the carcass (2) of which incorporates, at each of the sidewalls (5) thereof, a first and a second reinforcing insert (16, 17) having in cross-section a substantially lenticular form tapering to the ends, interposed between a first carcass ply (10) and a second carcass ply (11) and mutually joined at the tire maximum-chord point. Also applied to each sidewall against the carcass ply (10) turned to the inner part of the tire is an elastic support insert (13) of lenticular cross-section having a maximum thickness portion (13a) disposed at the junction point (18) between the two reinforcing insertions (16, 17). The elastic support insert (13) comprises a substantially stiff counter core (14) of lenticular cross-section, and a cover (15) made of elastomeric material have a low modulus of elasticity, coating the counter core (14) at one side thereof turned towards the carcass plies.
REFERENCES:
patent: 3717190 (1973-02-01), Boileau
patent: 3954131 (1976-05-01), Hoshino et al.
patent: 4287924 (1981-09-01), Deck et al.
patent: 4779658 (1988-10-01), Kawabata et al.
patent: 5058646 (1991-10-01), Kajikawa et al.
patent: 5238040 (1993-08-01), Ghilardi
patent: 5309970 (1994-05-01), Kawabata et al.
Johnstone Adrienne
Pirelli Coordinamento Pneumatici S.p.A.
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