Strand for application as reinforcement in objects of polymer material as well as one or more such strand comprising objects of polymer material
US4818631A · kind A · utility
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5References
5Claims
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Assignee
Inventor
Key dates
| Filing date | May 11, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | May 11, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/294
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A strand for reinforcing objects made of polymer material comprising at least one core wire and less than six outside wires arranged round it, the core wire having an outside diameter larger than the diameter of the circle tangent to each of the outside wires in the hollow space that remains free when their cross-sections have the highest packing density and smaller than the diameter of the outside wires, whereby the outside wires are made of carbon steel wire with a tensile strength of at least 2250-1130 log d N/mm.sup.2, d being the wire diameter in mm. The core wire has a tensile strength less than 2250-1130 log d N/mm.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.