Patent US3209205A successfully refreshed from Google Patents.
US3209205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current supply apparatus
Assignee: North Electric Co
•
Filing: 1960-06-07
•
Granted: 1965-09-28
•
Expires: 1980-06-07
Abstract
No abstract record available.
Inventors
- 👤 Everette C Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:16
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/08; H02H3/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
APPARATUS FOR SUPPLYING CURRENT TO A LOAD COMPRISING A PAIR OF TRANSISTORS OF THE P-N-P AND N-P-N TYPES RESPECTIVELY, FIRST MEANS FOR TRANSMITTING CURRENT THROUGH A FIRST CIRCUIT COMPRISING THE EMITTER-COLLECTOR PATH OF SAID FIRST TRANSISTOR AND THE BASE-EMITTER PATH OF SAID SECOND TRANSISTOR IN SERIES, SECOND MEANS FOR TRANSMITTING CURRENT THROUGH A SECOND CIRCUIT COMPRISING THE EMITTERCOLLECTOR PATH OF SAID SECOND TRANSISTOR AND THE BASEEMITTER PATH OF THE FIRST TRANSISTOR IN SERIES, AND PATH MEANS INCLUDING THE EMITTER-COLLECTOR PATHS OF SAID FIRST AND SECOND TRANSISTORS CONNECTED IN SERIES TO TRANSMIT THE CURRENT FROM A SOURCE TO A LOAD, SAID TRANSISTORS BEING OPERATIVE TO SUBSTANTIALLY INTERRUPT SAID CURRENT FLOW OT SAID LOAD RESPONSIVE TO FLOW OF CURRENT IN EXCESS OF SAID PREDETERMINED AMPLITUDE OVER SAID SERIES EMITTER-COLLECTOR PATHS.
Claim 2
Dependent Claim
128 words
APPARATUS FOR SUPPLYING CURRENT TO A LOAD COMPRISING A PAIR OF TRANSISTORS OF THE P-N-P AND N-P-N TYPES RESPECTIVELY, FIRST MEANS FOR TRANSMITTING CURRENT THROUGH A FIRST CIRCUIT COMPRISING THE EMITTER-COLLECTOR PATH OF SAID FIRST TRANSISTOR AND THE BASE-EMITTER PATH OF SAID SECOND TRANSISTOR IN SERIES, SECOND MEANS FOR TRANSMITTING CURRENT THROUGH A SECOND CIRCUIT COMPRISING THE EMITTERCOLLECTOR PATH OF SAID SECOND TRANSISTOR AND THE BASEEMITTER PATH OF THE FIRST TRANSISTOR IN SERIES, AND PATH MEANS INCLUDING THE EMITTER-COLLECTOR PATHS OF SAID FIRST AND SECOND TRANSISTORS CONNECTED IN SERIES TO TRANSMIT THE CURRENT FROM A SOURCE TO A LOAD, SAID TRANSISTORS BEING OPERATIVE TO SUBSTANTIALLY INTERRUPT SAID CURRENT FLOW OT SAID LOAD RESPONSIVE TO FLOW OF CURRENT IN EXCESS OF SAID PREDETERMINED AMPLITUDE OVER SAID SERIES EMITTER-COLLECTOR PATHS.
References Cited (Backward Citations)
US2890353A
Cited
US2769907A
Cited
US2864062A
Cited
FR1160405A
Cited
US2922945A
Cited
US2853633A
Cited
US2832900A
Cited
US2904742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |