US3306339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas furnace ignition control system
Assignee: Motors Liquidation Co
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Filing: 1964-06-05
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Granted: 1967-02-28
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Edward D Barton
- 👤 Frederick T Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:42
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN INGNITION CONTROL SYSTEM FOR A FLUID BURNER HAVING AN ELECTRICALLY ACTIVATED FUEL SUPPLY MEANS INCLUDING, A SPARK IGNITER, AN ELECTRIC POWER SUPPLY FOR ENERGIZING SAID SPARK IGNITER, A RADIO FREQUENCY DETECTION MEANS ASSOCIATED WITH SAID SPARK IGNITER IN WHICH A RADIO FREQUENCY SIGNAL IS DERIVED IN RESPONSE TO OPERATION OF SAID SPARK IGNITER, A FUEL CONTROL SOLENOID, A SILICON CONTROLLED RECTIFIER CONTROLLED FULL WAVE RECTIFIER BRIDGE MEANS CONNECTING SAID FUEL CONTROL SOLENOID WITH SAID POWER SUPPLY WHEN GATED, CIRCUIT MEANS CONNECTING SAID RADIO FREQUENCY DETECTION MEANS WITH THE GATE OF SAID SILICON CONTROLLED
Claim 2
Dependent Claim
94 words
AN INGNITION CONTROL SYSTEM FOR A FLUID BURNER HAVING AN ELECTRICALLY ACTIVATED FUEL SUPPLY MEANS INCLUDING, A SPARK IGNITER, AN ELECTRIC POWER SUPPLY FOR ENERGIZING SAID SPARK IGNITER, A RADIO FREQUENCY DETECTION MEANS ASSOCIATED WITH SAID SPARK IGNITER IN WHICH A RADIO FREQUENCY SIGNAL IS DERIVED IN RESPONSE TO OPERATION OF SAID SPARK IGNITER, A FUEL CONTROL SOLENOID, A SILICON CONTROLLED RECTIFIER CONTROLLED FULL WAVE RECTIFIER BRIDGE MEANS CONNECTING SAID FUEL CONTROL SOLENOID WITH SAID POWER SUPPLY WHEN GATED, CIRCUIT MEANS CONNECTING SAID RADIO FREQUENCY DETECTION MEANS WITH THE GATE OF SAID SILICON CONTROLLED
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |