Method for manufacturing nails
US5033181A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1990 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Jun 8, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49885
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Nails suitable for outdoor use, such as, for example, roofing nails, are formed from carbon steel wire precoated with a metallic layer, which has corrosion-resistant properties, such as, for example, a zinc layer applied by pre-galvanizing the stock carbon steel wire. Each nail is formed with a shank and with a head. The metallic layer is discontinuous within a region formed upon the head of each nail. The nails are collated by means of collating wires welded to the shanks of the nails. The collated nails are coiled. The coiled nails are cleaned in a cleaning bath, such as, for example, 1,1,trichloroethane. The cleaned nails are coated with a polymeric layer, which covers the region of the head of each nail where the metallic layer is discontinuous, thus restoring the corrosion-resistant properties of the nails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.