Pump purge for oil primary
US6478574B1 · kind B1 · utility
2Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Jul 21, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2239/06
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An oil burner control system is disclosed in which an extended time may be temporarily selected, in situations such as initial set up or periodic maintenance, for priming the pipes, filters and pumps, before a safety lockout of system operation occurs, while otherwise leaving the normal safety lockout functions intact. An igniter in the system operates in an “intermittent” mode during the temporarily selected extended time, and otherwise operates in an “interrupted” mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.