US3109082A
Expired / Lapsed
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Assignee: Avco Corp
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Filing: 1961-06-01
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Granted: 1963-10-29
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Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Polaniecki Salomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:16
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/04; G04F5/06; H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A SYSTEM FOR MAINTAINING THE TEMPERATURE OF AN OVEN CONSTANT, THE COMBINATION COMPRISING: HEATER COILS FOR SAID OVEN; A SOURCE OF UNREGULATED VOLTAGE; MEANS FOR REGULATING THE CURRENT FLOWING THROUGH SAID HEATER COILS, SAID MEANS COMPRISING A FIRST TRANSISTOR HAVING BASE, EMITTER, AND COLLECTOR ELECTRODES, SAID HEATER COILS BEING CONNECTED IN SERIES WITH THE COLLECTOR AND EMITTER ELECTRODES OF SAID FIRST TRANSISTOR AND SAID SOURCE; A TEMPERATURE-SENSING NETWORK IN SAID OVEN FOR GENERATING A DIRECT VOLTAGE RESPONSIVE TO THE TEMPERATURE OF SAID OVEN; A SECOND TRANSISTOR HAVING BASE, EMITTER, AND COLLECTOR ELECTRODES; A FIRST DIODE COUPLING SAID VOLTAGE BETWEEN SAID BASE AND EMITTER ELECTRODES; AND A CIRCUIT COUPLING THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR TO THE BASE ELECTRODE OF SAID FIRST TRANSISTOR, SAID COUPLING CIRCUIT COMPRISING A SECOND DIODE.
Claim 2
Dependent Claim
131 words
IN A SYSTEM FOR MAINTAINING THE TEMPERATURE OF AN OVEN CONSTANT, THE COMBINATION COMPRISING: HEATER COILS FOR SAID OVEN; A SOURCE OF UNREGULATED VOLTAGE; MEANS FOR REGULATING THE CURRENT FLOWING THROUGH SAID HEATER COILS, SAID MEANS COMPRISING A FIRST TRANSISTOR HAVING BASE, EMITTER, AND COLLECTOR ELECTRODES, SAID HEATER COILS BEING CONNECTED IN SERIES WITH THE COLLECTOR AND EMITTER ELECTRODES OF SAID FIRST TRANSISTOR AND SAID SOURCE; A TEMPERATURE-SENSING NETWORK IN SAID OVEN FOR GENERATING A DIRECT VOLTAGE RESPONSIVE TO THE TEMPERATURE OF SAID OVEN; A SECOND TRANSISTOR HAVING BASE, EMITTER, AND COLLECTOR ELECTRODES; A FIRST DIODE COUPLING SAID VOLTAGE BETWEEN SAID BASE AND EMITTER ELECTRODES; AND A CIRCUIT COUPLING THE COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR TO THE BASE ELECTRODE OF SAID FIRST TRANSISTOR, SAID COUPLING CIRCUIT COMPRISING A SECOND DIODE.
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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |