Steel belted radial ply tires with cap plies employing single yarn reinforcing elements
OwnerDionysius J. Poque, Horst Lorenzinventors
Life of this patent
Estimating the term…
Abstract
A steel belted radial ply tire construction characterized by an improved cap ply is disclosed. In the finished tire, a cap ply is formed from at least one layer of rubberized yarns of synthetic filamentary textile material. The cap ply is disposed in direct surrounding relation to the radially outermost belt ply of the tire. Since the cap ply is formed from single yarns rather than cords, the cap ply is thinner than conventional cap plies, has superior flexibility and heat dissipation characteristics. This abstract is not to be taken either as a complete exposition or a limitation of the present invention, the full nature and extent of the invention being discernable only by reference to and from the entire disclosure.
Claims11
A pneumatic tire comprising a radial ply carcass, a tread overlaying the crown region of said carcass, a belt interposed between said tread and said crown region of said carcass in circumferential surrounding relation to the latter, said belt including at least two plies of belt cords of high modulus material, the belt cords in each ply extending parallel to one another and being in crossing relation with respect to the cord of the next adjacent belt ply, a cap ply interposed between the radially outwardmost one of said belt plies and said tread, said cap ply consisting of a strip of material having non-metallic reinforcing elements parallel to one another and to the median plane of the tire, said reinforcing elements consisting of a series of single yarns only, having a twist of approximately 100 to 400 turns per meter and having a packing density of said single yarns in said cap ply between 60 to 300 yarns per decimeter and being longitudinally prestressed for exerting compressive stress on said belt plies.
Dependencies are inferred from the claim text.