Method of manufacturing loop-formed metal foil elements
US4642887A · kind A · utility
5Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Aug 23, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49794
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Method of manufacturing two loop-formed metal foil elements (1,2) intended to serve as electrical resistance heating elements. Starting from a unitary metal foil, possibly enclosed by plastic foils, at least two complementarily extending loop elements, one inside the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.