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US 4,073,330 AGranted
Tire cord fabrics for belts of belted pneumatic tires
AssigneeUniroyal, Inc.
InventorClaude H. Allard
Life of this patent
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AssigneeUniroyal, Inc.
InventorClaude H. Allard
Estimating the term…
Belted pneumatic tires, each belt ply of which includes both metallic and non-metallic cords interspersed with one another and of which the non-metallic cords are made of a material having a relatively high modulus generally of the same order of magnitude as that of the metal, are disclosed. In a preferred arrangement, each belt ply has steel wire cords arranged in a 1:1 alternating sequence with glass fiber cords. The sequence can be varied by having successive metal wire cords separated by two or more non-metallic cords, or by having successive pairs or greater numbers of metal cords separated by one, two or more non-metallic cords, and so forth. The use in tires of belts of such cords, eliminates tire wear and failure due to buckling and birdcaging of belts formed solely from non-metallic tire cords. This abstract is not to be taken either as a complete exposition or as a limitation of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.
A belted tire comprising a toroidal carcass terminating at its radially inward-most edges in a pair of beads, a tread surrounding the region of said carcass, sidewalls outlying the lateral regions of said carcass from said beads to the marginal regions of said treads, and a tread-reinforcing belt structure disposed circumferentially of the crown region of said carcass beneath said tread, said belt structure including at least one ply of a plurality of first continuous filament tire cords in which the filamentary elements are exclusively of metal wire and a plurality of second continuous filament tire cords in which the filamentary elements are exclusively of a high modulus non-metallic synthetic fiber, each ply of said belt structure having all said cords extending in the same direction in closely spaced, non-intertwined, side by side, relation and being interspersed with one another in such a fashion that at least some of said first cords have disposed therebetween at least one of said second cords.
Dependencies are inferred from the claim text.