Interrupted power hot wire gas ignition control system
US4432722A · kind A · utility
34Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1981 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Jul 13, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q7/24
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A hot wire type of gas ignition system uses a negative temperature coefficient resistor-ignitor element that is deenergized after ignition has occurred. The ignition and safety monitoring of the circuit is accomplished by a second flame detector means, and the flame responsive circuit that has been disclosed in a flame rectification circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.