Expanded metal electric heating element with edge support
US4292504A · kind A · utility
19Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1979 |
| Grant date | Sep 29, 1981 |
| Priority date | — |
| Expiry date | Oct 2, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric resistance heating unit in which the heating element is a thin, foil-like strip of expanded metal supported on edge substantially along its entire length on a board of insulating material. The heating element is formed in a serpentine pattern, and its bottom edge is embedded in a similar serpentine groove in the upper surface of a ceramic fiberboard and cemented therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.