Patent US3282322A successfully refreshed from Google Patents.
US3282322A
Expired / Lapsed
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Flame supervision devices for burners
Assignee: Satchwell Controls Ltd
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Filing: 1965-07-13
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Granted: 1966-11-01
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Expires: 1985-07-13
Abstract
No abstract record available.
Inventors
- 👤 Steghart Fritz Ludwig Felix
- 👤 Kershaw Peter Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:01
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A FLAME SUPERVISION DEVICE FOR A BURNER, THE DEVICE COMPRISING TWO DETECTORS EACH ADAPTED TO PROVIDE AN ELECTRICAL SIGNAL WHEN EXPOSED TO RADIATION FROM THE FLAME A FIRST RELAY MEANS ADAPTED TO RESPOND TO THE SIGNAL FROM AT LEAST ONE OF THE DETECTORS WHEN FLAME IS PRESENT TO PREVENT INTERRUPTION OF SUPPLY OF FUEL TO THE BURNER, AND A SECOND RELAY MEANS ADAPTED TO RESPOND TO A DIFFERENCE BETWEEN THE SIGNALS FROM THE TWO DETECTORS DEPARTING FROM A PREDETERMINED VALUE TO CAUSE THE DEVICE TO INTERRUPT THE SUPPLY OF FUEL.
Claim 2
Dependent Claim
90 words
A FLAME SUPERVISION DEVICE FOR A BURNER, THE DEVICE COMPRISING TWO DETECTORS EACH ADAPTED TO PROVIDE AN ELECTRICAL SIGNAL WHEN EXPOSED TO RADIATION FROM THE FLAME A FIRST RELAY MEANS ADAPTED TO RESPOND TO THE SIGNAL FROM AT LEAST ONE OF THE DETECTORS WHEN FLAME IS PRESENT TO PREVENT INTERRUPTION OF SUPPLY OF FUEL TO THE BURNER, AND A SECOND RELAY MEANS ADAPTED TO RESPOND TO A DIFFERENCE BETWEEN THE SIGNALS FROM THE TWO DETECTORS DEPARTING FROM A PREDETERMINED VALUE TO CAUSE THE DEVICE TO INTERRUPT THE SUPPLY OF FUEL.
References Cited (Backward Citations)
FR1211844A
Cited
FR1233672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |