Patent US3174528A successfully refreshed from Google Patents.
US3174528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staring burner control system
Assignee: —
•
Filing: —
•
Granted: 1965-03-23
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Expires: 1982-03-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:36
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/002; F23N2223/00; F23N2239/00; F23N2239/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A BURNER CONTROL CIRCUIT CONNECTING IN SERIES RELATIONSHIP ACROSS AN ALTERNATING POWER SOURCE A SAFETY SWITCH INCLUDING A SAFETY SWITCH RESISTANCE HEATER, A SPACE THERMOSTAT, A SOLID STATE DIODE, AND THE WINDING OF A BURNER OPERATING RELAY WHICH WHEN ENERGIZING REVERSES THE OPERATIVE POSITIONS OF NORMALLY OPEN AND NORMALLY CLOSED RELAY CONSTACTS, FIRST CIRCUIT CONNECTIONS PARALLELING SAID SAFETY SWITCH HEATER AND INCLUDING A SERIES RELATIONSHIP SAID NORMALLY OPEN RELAY CONTACTS AND A NORMALLY NONCONDUCTIVE SILICON CONTROLLED RECTIFIER HAVING MEANS RESPONSIVE TO THE LIGHT OF BURNER FLAME TO RENDER IN CONDUCTIVE, AND SECOND CIRCUIT CONNECTIONS PARALLELING SAID THERMOSTAT, SAID DIODE, AND SAID RELAY WINDING AND INCLUDING IN SERIES AND SAFETY SWITCH HEATER, SAID SILICON CONTROLLED RETIFIER, AND SAID NORMALLY CLOSED RELAY CONTACTS.
Claim 2
Dependent Claim
121 words
A BURNER CONTROL CIRCUIT CONNECTING IN SERIES RELATIONSHIP ACROSS AN ALTERNATING POWER SOURCE A SAFETY SWITCH INCLUDING A SAFETY SWITCH RESISTANCE HEATER, A SPACE THERMOSTAT, A SOLID STATE DIODE, AND THE WINDING OF A BURNER OPERATING RELAY WHICH WHEN ENERGIZING REVERSES THE OPERATIVE POSITIONS OF NORMALLY OPEN AND NORMALLY CLOSED RELAY CONSTACTS, FIRST CIRCUIT CONNECTIONS PARALLELING SAID SAFETY SWITCH HEATER AND INCLUDING A SERIES RELATIONSHIP SAID NORMALLY OPEN RELAY CONTACTS AND A NORMALLY NONCONDUCTIVE SILICON CONTROLLED RECTIFIER HAVING MEANS RESPONSIVE TO THE LIGHT OF BURNER FLAME TO RENDER IN CONDUCTIVE, AND SECOND CIRCUIT CONNECTIONS PARALLELING SAID THERMOSTAT, SAID DIODE, AND SAID RELAY WINDING AND INCLUDING IN SERIES AND SAFETY SWITCH HEATER, SAID SILICON CONTROLLED RETIFIER, AND SAID NORMALLY CLOSED RELAY CONTACTS.
References Cited (Backward Citations)
US3079982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |