Metal cord and process for manufacturing a metal cord
AssigneePirelli Pneumatici S.p.A.
InventorOmero Noferi
Life of this patent
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Abstract
A process for manufacturing a metal cord includes the steps of permanently deforming at least one wire using a substantially sinusoidal deformation lying in a plane and stranding the at least one wire together with one or more other wires by helicoidally double twisting the wires around a longitudinal axis of the metal cord. The metal cord may include at least two wires each with diameter greater than or equal to 0.10 mm and less than or equal to 0.50 mm. An associated metal cord includes at least two wires. One or more of the at least two wires is permanently deformed using a substantially sinusoidal deformation lying in a plane. The at least two wires are stranded together by helicoidally double twisting the at least two wires around a longitudinal axis of the metal cord.
Claims13
A process for manufacturing a metal cord, comprising the steps of:
- permanently deforming at least one wire using a substantially sinusoidal deformation lying in a plane;
- and
- stranding the at least one wire together with one or more other wires by helicoidally double twisting the at least one wire and the one or more other wires around a longitudinal axis of the metal cord.
A metal cord, comprising:
- a wire permanently deformed in a substantially-sinusoidal deformation lying in a plane;
- and
- one or more other wires;
- wherein at least one of the one or more other wires also may be permanently deformed, and
- wherein the wires are helicoidally double-twisted together around a longitudinal axis of the metal cord.
A metal cord, comprising:
- a wire permanently deformed in a substantially-sinusoidal deformation lying in a plane;
- and
- one or more other wires;
- wherein at least one of the one or more other wires also may be permanently deformed,
- wherein the wires are helicoidally double-twisted together around a longitudinal axis of the metal cord, and
- wherein the helicoidally double-twisted wires comprise a stranding pitch greater than or equal to 3 mm and less than or equal to 50 mm.
Dependencies are inferred from the claim text.