Method and device for manufacturing a three-layer cord of the type rubberized in situ
US8474235B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 10, 2009 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Nov 14, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2501/2046
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A device and method for manufacturing a metal cord with three concentric layers, rubberized in situ, of M+N+P construction, wherein the method comprises the following steps which are performed in line: an assembling step by twisting N wires around a first layer to form, at a point named the “assembling point”, an intermediate cord named a “core strand” of M+N construction; downstream of the assembling point, a sheathing step in which the M+N core strand is sheathed with a rubber composition named “filling rubber” in the uncrosslinked state, an assembling step in which P wires of the first layer are twisted around the core strand thus sheathed, and a final twist-balancing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.