Coil coating of sheet metal to provide localized corrosion protection
US5271144A · kind A · utility
4Cited by
21References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Jun 29, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49982
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of providing localized corrosion protection to products manufactured of sheet metal wherein coils of sheet metal are passed through a coil coating line wherein one or more stripes of corrosion resistant material are applied to selected areas along both the upper and lower surfaces of the metal prior to the metal being cut, punched, or bent to form a product having predetermined portions of its surface area coated. In one embodiment, a selected corrosion resistant coating is applied to galvanized sheet metal prior to the metal being punched and formed into sheet metal fasteners having coated heads but uncoated shanks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.