Pneumatiques, Caoutchouc Manufacture Et Plastiques Kleber-colombes

Pneumatiques, Caoutchouc Manufacture Et Plastiques

Claude LeFaucheur

Henri Greiner

Alphonse Deck

Safety tire comprising a tread (11) reinforced by an inextensible belt (23), spaced beads (12), and side walls (14) connecting the beads to the sides of the tread, defining below the latter a central inflatable chamber (15), each side wall at least being reinforced by a carcass (21), and comprising on the inside of the carcass a supporting shaped part or support member (20) of lenticular section, made of an elastomer and extending from the vicinity of the beads (12) to below the edges of the belt, said tire being characterized in that the said shaped supporting parts (20) are constituted by two parts with different flexibility, whereof one (20.sub.1) disposed near the inner face of the carcass (21) is of a more flexible elastomer while the other (20.sub.2) disposed inside the tire is of less flexible elastomer.

Safety tire with sidewall support members having two parts with

A pneumatic tire of low cross-section of a height to width ratio equal to or less than 0.8, and which is suitable for use at high speed. The tire has a radial carcass and a crown belt interposed between the radial carcass and the tire tread for the width of the tread surface, the belt being formed from two main plies of unequal width composed of high modulus flexible cords which are orientated in opposite direction at small angles, one at least of the plies having its lateral edges folded over and flattened against the inner face of the belt. A third, narrower, belt ply is positioned on the outer face of the belt against the central part of the ply whose edges are folded. The width of the third ply is between the width of the narrower and unfolded ply and the width of the space between the edges of the wider folded ply.

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Paris, France

Claude LeFaucheur