High voltage ceramic igniter
US5820789A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1997 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Apr 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q7/001
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of heating, comprising the step of providing a line voltage of between 120V and 230 V across a ceramic igniter having a hot zone composition comprising: PA1 (a) between 50 and 80 v/o of an electrically insulating ceramic having a resistivity of at least about 10.sup.10 ohm-cm; PA1 (b) between 10 and 45 v/o of a semiconductive material having a resistivity of between about 1 and about 10.sup.8 ohm-cm; PA1 (c) between 5 and 25 v/o of a metallic conductor having a resistivity of less than about 10.sup.-2 ohm-cm; and PA1 (d) between 2.0 and 20 v/o of a resistivity-enhancing compound selected from the group consisting of metallic oxides, metallic oxynitrides, rare earth oxides, rare earth oxynitrides, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.