Patent US3076925A successfully refreshed from Google Patents.
US3076925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current supply apparatus
Assignee: North Electric Co
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Filing: 1960-03-29
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Granted: 1963-02-05
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Expires: 1980-03-29
Abstract
No abstract record available.
Inventors
- 👤 Stuart P Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:39
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
APPARATUS FOR SUPPLYING TO A LOAD CURRENT FROM A SOURCE OF ALTERNATING CURRENT HAVING A FUNDAMENTAL FREQUENCY WHICH IS SUBSTANTIALLY CONSTANT COMPRISING A TRANSFORMER HAVING A PRIMARY AND A SECONDARY ON A SATURABLE CORE OF SUBSTANTIALLY SQUARE HYSTERESIS LOOP MAGNETIC MATERIAL, A TRANSISTOR HAVING AN EMITTER, A COLLECTOR AND A BASE, A CIRCUIT COMPRISING SAID CURRENT SOURCE, SAID PRIMARY, THE EMITTER-COLLECTOR PATH OF SAID TRANSISTOR AND SAID LOAD ALL IN SERIES, AND MEANS COMPRISING SAID SECONDARY FOR MAKING SAID TRANSISTOR SUBSTANTIALLY FULLY CONDUCTING IN RESPONSE TO INCREASING CURRENT IN SAID CIRCUIT DURING A HALF CYCLE PERIOD OF SAID ALTERNATING CURRENT AND FOR SUBSEQUENTLY DURING SAID HALF CYCLE PERIOD MAKING SAID TRANSISTOR SUBSTANTIALLY NON-CONDUCTING IN RESPONSE TO DECREASING CURRENT IN SAID CIRCUIT.
Claim 2
Dependent Claim
121 words
APPARATUS FOR SUPPLYING TO A LOAD CURRENT FROM A SOURCE OF ALTERNATING CURRENT HAVING A FUNDAMENTAL FREQUENCY WHICH IS SUBSTANTIALLY CONSTANT COMPRISING A TRANSFORMER HAVING A PRIMARY AND A SECONDARY ON A SATURABLE CORE OF SUBSTANTIALLY SQUARE HYSTERESIS LOOP MAGNETIC MATERIAL, A TRANSISTOR HAVING AN EMITTER, A COLLECTOR AND A BASE, A CIRCUIT COMPRISING SAID CURRENT SOURCE, SAID PRIMARY, THE EMITTER-COLLECTOR PATH OF SAID TRANSISTOR AND SAID LOAD ALL IN SERIES, AND MEANS COMPRISING SAID SECONDARY FOR MAKING SAID TRANSISTOR SUBSTANTIALLY FULLY CONDUCTING IN RESPONSE TO INCREASING CURRENT IN SAID CIRCUIT DURING A HALF CYCLE PERIOD OF SAID ALTERNATING CURRENT AND FOR SUBSEQUENTLY DURING SAID HALF CYCLE PERIOD MAKING SAID TRANSISTOR SUBSTANTIALLY NON-CONDUCTING IN RESPONSE TO DECREASING CURRENT IN SAID CIRCUIT.
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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |