US3105920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device
Assignee: General Electric Co
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Filing: 1961-09-15
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Granted: 1963-10-01
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Expires: 1981-09-15
Abstract
No abstract record available.
Inventors
- 👤 Clyde G Dewey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:57
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
MEANS FOR INITIATING A PREDETERMINED CONTROL FUNCTION IN DELAYED RESPONSE TO THE OCCURRENCE OF AN ABNORMAL CONDITION IN AN ELECTRIC CURRENT CIRCUIT, COMPRISING: MEANS ADAPTED TO BE COUPLED TO THE CIRCUIT FOR DERIVING THEREFROM A D.-C. SIGNAL HAVING A MAGNITUDE DEPENDENT UPON THE VALUE OF A CHARACTERISTIC ELECTRIC QUANTITY OF THE CIRCUIT; ELECTRIC ENERGY STORING MEANS DISPOSED TO ACCUMULATE ENERGY AT A RATE DEPENDENT UPON THE MAGNITUDE OF SAID D.-C. SIGNAL WHEN SAID MAGNITUDE EXCEEDS A PREDETERMINED PICKUP LEVEL, SAID ENERGY STORING MEANS INCLUDING TWO SERIALLY INTERCONNECTED SECTIONS COMPRISING, RESPECTIVELY, A RESISTANCE ELEMENT AND A REACTANCE ELEMENT WITH ONE OF THE SECTIONS COMPRISING AT LEAST TWO ELEMENTS OF LIKE KIND, SAID ENERGY STORING MEANS ALSO INCLUDING A BREAKDOWN DIODE CONNECTED IN CIRCUIT WITH A PREDETERMINED ONE OF THE ELEMENTS OF SAID ONE SECTION FOR CHANGING A PARAMETER OF SAID ONE SECTION TO ALTER THE TIME CONSTANT OF THE ENERGY STORING MEANS WHEN VOLTAGE IMPRESSED ACROSS SAID DIODE REACHES A PREDETERMINED CRITICAL LEVEL; AND MEANS CONNECTED TO SAID ENERGY STORING MEANS FOR INITIATING THE PREDETERMINED CONTROL FUNCTION IN RESPONSE TO THE ACCUMULATION OF A PREDETERMINED AMOUNT OF ENERGY BY THE ENERGY STORING MEANS.
Claim 2
Dependent Claim
192 words
MEANS FOR INITIATING A PREDETERMINED CONTROL FUNCTION IN DELAYED RESPONSE TO THE OCCURRENCE OF AN ABNORMAL CONDITION IN AN ELECTRIC CURRENT CIRCUIT, COMPRISING: MEANS ADAPTED TO BE COUPLED TO THE CIRCUIT FOR DERIVING THEREFROM A D.-C. SIGNAL HAVING A MAGNITUDE DEPENDENT UPON THE VALUE OF A CHARACTERISTIC ELECTRIC QUANTITY OF THE CIRCUIT; ELECTRIC ENERGY STORING MEANS DISPOSED TO ACCUMULATE ENERGY AT A RATE DEPENDENT UPON THE MAGNITUDE OF SAID D.-C. SIGNAL WHEN SAID MAGNITUDE EXCEEDS A PREDETERMINED PICKUP LEVEL, SAID ENERGY STORING MEANS INCLUDING TWO SERIALLY INTERCONNECTED SECTIONS COMPRISING, RESPECTIVELY, A RESISTANCE ELEMENT AND A REACTANCE ELEMENT WITH ONE OF THE SECTIONS COMPRISING AT LEAST TWO ELEMENTS OF LIKE KIND, SAID ENERGY STORING MEANS ALSO INCLUDING A BREAKDOWN DIODE CONNECTED IN CIRCUIT WITH A PREDETERMINED ONE OF THE ELEMENTS OF SAID ONE SECTION FOR CHANGING A PARAMETER OF SAID ONE SECTION TO ALTER THE TIME CONSTANT OF THE ENERGY STORING MEANS WHEN VOLTAGE IMPRESSED ACROSS SAID DIODE REACHES A PREDETERMINED CRITICAL LEVEL; AND MEANS CONNECTED TO SAID ENERGY STORING MEANS FOR INITIATING THE PREDETERMINED CONTROL FUNCTION IN RESPONSE TO THE ACCUMULATION OF A PREDETERMINED AMOUNT OF ENERGY BY THE ENERGY STORING MEANS.
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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |