US3317699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply for a magnetron
Assignee: HOBART CHICAGO HEIGHTS Inc AN CORP
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Filing: 1964-09-16
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Granted: 1967-05-02
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Expires: 1984-09-16
Abstract
No abstract record available.
Inventors
- 👤 Donald F Helfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:30
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/66; H05B6/666
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A CIRCUIT FOR CONTROLLING APPLICATION OF VOLTAGE TO THE FILAMENT AND ANODE OF A MAGNETRON COMPRISING IN COMBINATION, SUPPLY CIRCUITS TO BE ENERGIZED FROM A POWER SOURCE FOR SUPPLYING VOLTAGE TO THE FILAMENT AND ANODE OF THE MAGNETRON, MEANS FOR EFFECTING INITIAL ENERGIZATION OF SAID FILAMENT SUPPLY CIRCUIT TO SUPPLY AN INITIAL MAGNITUDE OF VOLTAGE OF SAID FILAMENT, MEANS FOR CONTROLLING ENERGIZATION OF SAID ANODE AND FILAMENT SUPPLY CIRCUITS INCLUDING CONTROL SWITCH MEANS, A TIME DELAY DEVICE TO BE ENERGIZED FROM SAID POWER SOURCE SIMULTANEOUSLY WITH ENERGIZATION OF SAID FILAMENT SUPPLY CIRCUIT AND OPERABLE A PRESELECTED TIME AFTER ENERGIZATION THEREOF, AND RELAY MEANS ENERGIZABLE ONLY IN RESPONSE BOTH TO ACTUATION OF SAID CONTROL SWITCH MEANS AND OPERATION OF SAID TIME DELAY DEVICE, SAID RELAY MEANS BEING EFFECTIVE WHEN ENERGIZED SIMULTANEOUSLY TO REDUCE TO A FINITE MAGNITUDE THE INITIAL MAGNITIUDE OF VOLTAGE SUPPLIED BY SAID FILAMENT SUPPLY CIRCUIT, TO EFFECT ENERGIZATION OF SAID ANODE SUPPLY CIRCUIT, AND SO DEENERGIZE SAID TIME DELAY DEVICE.
Claim 2
Dependent Claim
162 words
A CIRCUIT FOR CONTROLLING APPLICATION OF VOLTAGE TO THE FILAMENT AND ANODE OF A MAGNETRON COMPRISING IN COMBINATION, SUPPLY CIRCUITS TO BE ENERGIZED FROM A POWER SOURCE FOR SUPPLYING VOLTAGE TO THE FILAMENT AND ANODE OF THE MAGNETRON, MEANS FOR EFFECTING INITIAL ENERGIZATION OF SAID FILAMENT SUPPLY CIRCUIT TO SUPPLY AN INITIAL MAGNITUDE OF VOLTAGE OF SAID FILAMENT, MEANS FOR CONTROLLING ENERGIZATION OF SAID ANODE AND FILAMENT SUPPLY CIRCUITS INCLUDING CONTROL SWITCH MEANS, A TIME DELAY DEVICE TO BE ENERGIZED FROM SAID POWER SOURCE SIMULTANEOUSLY WITH ENERGIZATION OF SAID FILAMENT SUPPLY CIRCUIT AND OPERABLE A PRESELECTED TIME AFTER ENERGIZATION THEREOF, AND RELAY MEANS ENERGIZABLE ONLY IN RESPONSE BOTH TO ACTUATION OF SAID CONTROL SWITCH MEANS AND OPERATION OF SAID TIME DELAY DEVICE, SAID RELAY MEANS BEING EFFECTIVE WHEN ENERGIZED SIMULTANEOUSLY TO REDUCE TO A FINITE MAGNITUDE THE INITIAL MAGNITIUDE OF VOLTAGE SUPPLIED BY SAID FILAMENT SUPPLY CIRCUIT, TO EFFECT ENERGIZATION OF SAID ANODE SUPPLY CIRCUIT, AND SO DEENERGIZE SAID TIME DELAY DEVICE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |