Reinforced articles
AssigneeW & A Bates Limited
InventorsEric Holroyd, David J. B. Perkins
Life of this patent
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Abstract
Tire breaker fabric for a pneumatic tire comprising a sheet of tire cords wherein the cords comprise a twisted package of high modulus material filaments having a twist angle of not more than 18.degree. and the cords are formed by one single continuous cord which extends back and forth across the sheet in a zig-zag formation. The cords are preferably closely spaced and held in the sheet by a thin sheet of elastomeric material. The invention provides in addition a tire including breaker fabric of this type.
Claims17
A tire breaker fabric for a pneumatic tire comprising an elongate sheet of tire cord fabric having edges spaced apart by a width of a breaker for which said fabric is intended wherein the tire cords are formed by one single continuous tire cord of twisted filaments of a material having a modulus of 5000-21,000 Kg/mm.sup.2, the filaments of the cord having an angle of twist of not more than 18.degree. where a tangent of the angle of twist is given by the formula ##EQU2## the cord being folded back on itself at folded edges about an axis perpendicular to the plane of the sheet with the filaments of the cord arranged at said folded edges in a vertical line parallel to said axis so that the filaments each have substantially the same bend radius.
Dependencies are inferred from the claim text.