Burner ignition and control system
Abstract
Abstract A DIRECT IGNITION AND CONTROL SYSTEM FOR GASEOUS FUEL BURNERS EMPLOYING AN ELECTRICAL RESISTANCE-TYPE IGNITER, A BIASED CLOSED SOLENOID ACTUATED FUEL VALVE, A DOUBLETHROUGH SWITCH NORMALLY COMPLETING AN ENERGIZING CIRCUIT FOR THE IGNITER AND RESPONSIVE TO THE RADIANT ENERGY OF THE IGNITER WHEN AT IGNITION TEMPERATURE TO BRAKE THE IGNITER CIRCUIT AND COMPLETE AN ENERGIZING CIRCUIT FOR THE WINDING OF THE VALVE SOLENOID, THE VALVE CIRCUIT INCLUDING A SERIES RESISTOR LIMITING CURRENT FLOW THROUGH THE SOLENOID WINDING TO THAT WHICH HOLDS THE VALVE OPEN BUT WILL NOT OPEN IT, AND FURTHER INCLUDES A NORMALLY CHARGED CAPACITOR WHICH UPON COMPLETION OF THE SOLENOID WINDING CIRCUIT BY THE DOUBLE THROW SWITCH IS DISCHARGED THROUGH THE WINDING TO EFFECT OPENING OF THE VALVE, THE DOUBLE THROW SWITCH ALSO BEING RESPONSIVE TO BURNER FLAME TO RETAIN COMPLETION OF THE VALVE HOLD OPEN CIRCUIT AND THE IGNITER HAVING SUFFICIENT MASS TO RETAIN AN IGNITING TEMPERATURE FOR A BRIEF PERIOD AFTER DE-ENERGIZATION.
Inventors
- 👤 James A Wright
- 👤 Allan W Lindberg
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |