Electrical heating unit
US3978316A · kind A · utility
19Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1975 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Sep 19, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/748
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical heating unit of the integral element type, comprising an electrical heating element indirectly bonded to a supporting beta quartz-zinc petalite glass-ceramic plate is described. A semicrystalline zinc aluminosilicate coating is provided between the glass-ceramic plate and the heating element, to improve the adherence and stabilize the resistance of the element and to protect the plate from deterioration during and subsequent to the bonding of the integral heating element to the unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.