US3076128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant current supply apparatus
Assignee: Motors Liquidation Co
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Filing: 1961-01-30
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Granted: 1963-01-29
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Expires: 1981-01-30
Abstract
No abstract record available.
Inventors
- 👤 John W Toski
- 👤 Robert F Spain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:51
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
AN ELECTRICAL CIRCUIT FOR MAINTAINING A CONSTANT CURRENT OUTPUT FROM A SOURCE OF D.C. VOLTAGE COMPRISING, A TRANSISTOR HAVING EMITTER, BASE AND COLLECTOR ELECTRODES, MEANS CONNECTING THE EMITTER TO COLLECTOR CIRCUIT OF SAID TRANSISTOR IN SERIES WITH SAID D.C. VOLTAGE SOURCE, A SOURCE OF BIAS VOLTAGE SEPARATE FROM SAID D.C. VOLTAGE SOURCE, A POTENTIOMETER RESISTOR HAVING OPPOSITE ENDS CONNECTED WITH SAID SOURCE OF BIASING VOLTAGE AND HAVING SHIFTABLE TAP MEANS, MEANS CONNECTING SAID EMITTER AND BASE ELECTRODES OF SAID TRANSISTOR BETWEEN SAID TAP MEANS AND ANOTHER PART OF SAID POTENTIOMETER RESISTOR, AND MEANS FOR CAUSING A SHIFTABLE MOVEMENT OF SAID TAP MEANS IN ACCORDANCE WITH CURRENT FLOW IN THE SERIES CIRCUIT BETWEEN SAID D.C. VOLTAGE SOURCE AND TRANSISTOR.
References Cited (Backward Citations)
US2983831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |