Electrical heating elements for example made of silicon carbide
US6723969B1 · kind B1 · utility
2Cited by
9References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2002 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Oct 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical resistance ceramic heating element comprises: a) three or more ceramic legs comprising regions of the element in which at least the majority of the electrical heating occurs (hot zones), at least one of the legs being effectively entirely a hot zone and at least two of the legs each comprising a hot zone and a cold zone; b) a number of leg terminal portions less than the number of legs, for connection to a power supply; and, c) ceramic bridging portions providing electrical connectivity between the legs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.