US3273018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast action current limiting circuit employing release of stored energy to initiate current limiting action
Assignee: General Electric Co
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Filing: 1964-09-15
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Granted: 1966-09-13
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Expires: 1984-09-15
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Leon Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:41
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A FAST-ACTION CURRENT LIMITING CIRCUIT INCLUDING IN COMBINATION A LOAD TO BE PROTECTED AND CURRENT LIMITING MEANS CONNECTED IN SERIES CIRCUIT RELATIONSHIP ACROSS A PAIR OF POWR SUPPLY TERMINALS THAT IN TURN ARE ADAPTED TO BE CONNECTED ACROSS A SOURCE OF ELECTRIC POTENTIAL, A COMMUTATING CAPACITOR AND FAST-ACTING CONDUCTIVITY CONTROLLED CONDUCTING MEANS CONNECTED IN SERIES CIRCUIT RELATIONSHIP ACROSS SAID CURRENT LIMITING MEANS, SAID COMMUTATING CAPACITOR HAVING ITS PRIMARY DISCHARGE PATH THROUGH SAID CURRENT LIMITING MEANS UPON SAID FAST ACTING CONTROLLED CONDUCTING MEANS BEING TURNED ON TO THEREBY INITIATE CURRENT LIMITING ACTION BY SAID CURRENT LIMITING MEANS, MEANS FOR CHARGING THE COMMUTATING CAPACITOR TO A PREDETERMINED VOLTAGE LEVEL, SENSING MEANS OPERATIVELY CONNECTED IN CIRCUIT RELATIONSHIP WITH THE LOAD FOR SENSING LOAD CURRENT FLOW THROUGH THE LOAD AND DERIVING AN OUTPUT GATING SIGNAL UPON THE LOAD CURRENT ASSUMING AN UNDESIRED LOAD CURRENT CONDITION, AND MEANS OPERATIVELY COUPLING THE OUTPUT OF SAID SENSING MEANS TO THE FAST-ACTING CONDUCTIVITY CONTROLLED CONDUCTING MEANS FOR CAUSING THE FAST-ACTING CONDUCTING MEANS TO TURN ON THEREBY DISCHARGING THE COMMUNTATING CAPACITOR THROUGH THE CURRENT LIMITING MEANS TO INITIATE ITS CURRENT LIMITING ACTION.
Claim 2
Dependent Claim
183 words
A FAST-ACTION CURRENT LIMITING CIRCUIT INCLUDING IN COMBINATION A LOAD TO BE PROTECTED AND CURRENT LIMITING MEANS CONNECTED IN SERIES CIRCUIT RELATIONSHIP ACROSS A PAIR OF POWR SUPPLY TERMINALS THAT IN TURN ARE ADAPTED TO BE CONNECTED ACROSS A SOURCE OF ELECTRIC POTENTIAL, A COMMUTATING CAPACITOR AND FAST-ACTING CONDUCTIVITY CONTROLLED CONDUCTING MEANS CONNECTED IN SERIES CIRCUIT RELATIONSHIP ACROSS SAID CURRENT LIMITING MEANS, SAID COMMUTATING CAPACITOR HAVING ITS PRIMARY DISCHARGE PATH THROUGH SAID CURRENT LIMITING MEANS UPON SAID FAST ACTING CONTROLLED CONDUCTING MEANS BEING TURNED ON TO THEREBY INITIATE CURRENT LIMITING ACTION BY SAID CURRENT LIMITING MEANS, MEANS FOR CHARGING THE COMMUTATING CAPACITOR TO A PREDETERMINED VOLTAGE LEVEL, SENSING MEANS OPERATIVELY CONNECTED IN CIRCUIT RELATIONSHIP WITH THE LOAD FOR SENSING LOAD CURRENT FLOW THROUGH THE LOAD AND DERIVING AN OUTPUT GATING SIGNAL UPON THE LOAD CURRENT ASSUMING AN UNDESIRED LOAD CURRENT CONDITION, AND MEANS OPERATIVELY COUPLING THE OUTPUT OF SAID SENSING MEANS TO THE FAST-ACTING CONDUCTIVITY CONTROLLED CONDUCTING MEANS FOR CAUSING THE FAST-ACTING CONDUCTING MEANS TO TURN ON THEREBY DISCHARGING THE COMMUNTATING CAPACITOR THROUGH THE CURRENT LIMITING MEANS TO INITIATE ITS CURRENT LIMITING ACTION.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |