Method for the production of a three-layer metal cord of the type that is rubberized in situ
US9010079B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 6, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Nov 29, 2031 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2501/2046
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Method for manufacturing a metal cord with three concentric layers including a first layer of diameter dc made up of M wire(s) of diameter d1, around which layer are wound together as a helix at a pitch p2, as a second layer, N wires of diameter d2, around which are wound as a helix at pitch p3, as a third layer, P wires of diameter d3. The N wires of the second layer are assembled around the layer to form, at a point called “assembling point”, an intermediate cord called “core strand” of M+N construction; upstream and/or downstream of the assembling point, the layer and/or the core strand is sheathed with a rubber or rubber composition by passing through at least one extrusion head; then the P wires of the third layer are assembled around the core strand to form a cord of M+N+P construction thus rubberized from the inside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.