US3196923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner control system
Assignee: Honeywell Inc
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Filing: 1963-06-17
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Granted: 1965-07-27
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Eric P Selinder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:43
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N2227/00; F23N2227/28; F23N2229/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
BURNER CONTROL APPARATUS IN THE FORM OF A BRIDGE CIRCUIT HAVING FIRST, SECOND, THIRD AND FOURTH LEGS, AND HAVING INPUT AND OUTPUT MEANS, COMPRISING; A PAIR OF INPUT TERMINALS; A FIRST RESISTOR AND IGNITION MEANS CONNECTED IN SERIES BETWEEN SAID INPUT TERMINALS TO FORM THE FIRST AND SECOND LEGS OF THE BRIDGE CIRCUIT WITH THE INTERCONNECTION POINT BEING A FIRST OUTPUT TERMINAL, A CLOSED FLAME SWITCH CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR AND MOVABLE TO AN OPEN POSITION IN THE PRESENCE OF FLAME; A SECOND RESISTOR AND A FUEL VALVE CONNECTED IN SERIES BETWEEN SAID INPUT TERMINALS TO FORM THE THIRD AND FOURTH LEGS OF TEH BRIDGE CIRCUIT WITH THE INTERCONNECTION POINT BEING A SECOND OUTPUT TERMINAL; TIME DELAYED SAFETY CUTOUT MEANS HAVING A CLOSED SWITCH AND A TIME DELAYED ACTUATOR ADAPTED TO OPEN SAID SWITCH AFTER A TIME PERIOD
Claim 2
Dependent Claim
141 words
BURNER CONTROL APPARATUS IN THE FORM OF A BRIDGE CIRCUIT HAVING FIRST, SECOND, THIRD AND FOURTH LEGS, AND HAVING INPUT AND OUTPUT MEANS, COMPRISING; A PAIR OF INPUT TERMINALS; A FIRST RESISTOR AND IGNITION MEANS CONNECTED IN SERIES BETWEEN SAID INPUT TERMINALS TO FORM THE FIRST AND SECOND LEGS OF THE BRIDGE CIRCUIT WITH THE INTERCONNECTION POINT BEING A FIRST OUTPUT TERMINAL, A CLOSED FLAME SWITCH CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR AND MOVABLE TO AN OPEN POSITION IN THE PRESENCE OF FLAME; A SECOND RESISTOR AND A FUEL VALVE CONNECTED IN SERIES BETWEEN SAID INPUT TERMINALS TO FORM THE THIRD AND FOURTH LEGS OF TEH BRIDGE CIRCUIT WITH THE INTERCONNECTION POINT BEING A SECOND OUTPUT TERMINAL; TIME DELAYED SAFETY CUTOUT MEANS HAVING A CLOSED SWITCH AND A TIME DELAYED ACTUATOR ADAPTED TO OPEN SAID SWITCH AFTER A TIME PERIOD
References Cited (Backward Citations)
US2380125A
Cited
US2761625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |