Annular concentric-lay bead cord
US7735307B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 1, 2005 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Nov 16, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10819
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The disclosed bead cord which is lightweight and inexpensive and high in formability includes an annular core and a wrap wire helically wrapped around the annular core, the annular core being made of a medium carbon steel or an alloy steel having a lower carbon content and containing specific elements in suitable amounts. The diameter dC of alular core satisfies 1.04≦dC/dS≦1.30 where dS is the diameter of the wrap wire. The wrap wire has a coil diameter DS which is 0.5 to 1.3 times diameter DC of an annular shape of the annular core. The annular core may be formed with a plating layer of an Al—Zn alloy or a thick plating layer of Zn, or the annular core may be made of stainless steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.