Patent US3196343A successfully refreshed from Google Patents.
US3196343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current regulator
Assignee: Marquardt Corp
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Filing: 1960-08-08
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Granted: 1965-07-20
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Expires: 1980-08-08
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:58
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A SELECTIVELY ADJUSTABLE CURRENT REGULATOR COMPRISING; AN UNREGULATED SUPPLY OF DIRECT CURRENT, A SOURCE OF FIXED REFERENCE VOLTAGE SOURCE, A PLURALITY OF RESISTANCES CONNECTED TO SAID UNREGULATED SUPPLY, THE RESISTANCE IN EACH OF SAID CIRCUITS CORRESPONDING TO COEFFICIENTS OF THE RADIX OF A NUMBER SYSTEM, A SELECTIVE SWITCHING MEANS CONNECTED IN SERIES WITH EACH OF SAID RESISTANCES FOR SELECTIVELY PARALLELING SAID RESISTANCES TO OBTAIN A SELECTED SIGNAL VOLTAGE FROM SAID UNREGULATED SUPPLY, A COMPARISON MEANS CONNECTED TO SAID FIXED REFERENCE VOLTAGE AND TO SAID SELECTED SIGNAL VOLTAGE AND RESPONSIVE TO SAID SIGNAL AND SAID REFERENCE FOR PROVIDING A DIFFERENCE VOLTAGE REPRESENTING THE DIFFERENCE THEREBETWEEN, A LOAD IMPEDANCE, AND CIRCUIT MEANS CONNECTED BETWEEN SAID UNREGULATED SUPPLY AND SAID LOAD IMPEDANCE RESPONSIVE TO THE SELECTED SIGNAL VOLTAGE AND THE DIFFERENCE VOLTAGE FOR MAINTAINING A CONSTANT CURRENT THROUGH SAID LOAD IMPEDANCE, SAID CONSTANT CURRENT CORRESPONDING TO THE SUM OF THE SELECTED COEFFICIENTS OF THE RADIX OF THE NUMBER SYSTEM.
Claim 2
Dependent Claim
156 words
A SELECTIVELY ADJUSTABLE CURRENT REGULATOR COMPRISING; AN UNREGULATED SUPPLY OF DIRECT CURRENT, A SOURCE OF FIXED REFERENCE VOLTAGE SOURCE, A PLURALITY OF RESISTANCES CONNECTED TO SAID UNREGULATED SUPPLY, THE RESISTANCE IN EACH OF SAID CIRCUITS CORRESPONDING TO COEFFICIENTS OF THE RADIX OF A NUMBER SYSTEM, A SELECTIVE SWITCHING MEANS CONNECTED IN SERIES WITH EACH OF SAID RESISTANCES FOR SELECTIVELY PARALLELING SAID RESISTANCES TO OBTAIN A SELECTED SIGNAL VOLTAGE FROM SAID UNREGULATED SUPPLY, A COMPARISON MEANS CONNECTED TO SAID FIXED REFERENCE VOLTAGE AND TO SAID SELECTED SIGNAL VOLTAGE AND RESPONSIVE TO SAID SIGNAL AND SAID REFERENCE FOR PROVIDING A DIFFERENCE VOLTAGE REPRESENTING THE DIFFERENCE THEREBETWEEN, A LOAD IMPEDANCE, AND CIRCUIT MEANS CONNECTED BETWEEN SAID UNREGULATED SUPPLY AND SAID LOAD IMPEDANCE RESPONSIVE TO THE SELECTED SIGNAL VOLTAGE AND THE DIFFERENCE VOLTAGE FOR MAINTAINING A CONSTANT CURRENT THROUGH SAID LOAD IMPEDANCE, SAID CONSTANT CURRENT CORRESPONDING TO THE SUM OF THE SELECTED COEFFICIENTS OF THE RADIX OF THE NUMBER SYSTEM.
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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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |