Electric heating furnace
US4056678A · kind A · utility
12Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1976 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Feb 20, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric heating furnace which includes a conductive electric resistance heating element strip mounted within a chamber defined by walls of porous refractory insulating material. Terminal or mounting pins extend through the wall of insulating material and the heating strip are secured thereby. A sleeve of non-porous refractory material surrounds the portion of the pin within the wall of insulating material for electrically insulating the pin from the porous refractory wall material which may have a conductive layer of carbon build up therein under certain heat treating conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.