Patent US3444323A successfully refreshed from Google Patents.
US3382422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positioning control circuit including a signal proportional to the smaller of error and rate signals
Assignee: Schneider Electric USA Inc
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Filing: 1965-02-23
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Granted: 1968-05-07
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Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Roger D Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:47
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B2219/00; G05B2219/30; G05B2219/43; G05B2219/43179
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
AN ELECTRICAL CIRCUIT COMPONENT FOR USE IN A POSITIONING SYSTEM AND RESPONSIVE TO A VARIABLE ERROR SIGNAL AND A RATE SIGNAL, EITHER OF WHICH MIGHT BE SMALLER THAN THE OTHER AT ANY INSTANT, TO PROVIDE AN OUTPUT SIGNAL PROPORTIONAL TO THE SMALLER OF THE ERROR AND RATE SIGNALS, SAID COMPONENT COMPRISING A FIRST RESISTOR OF RELATIVELY SMALL RESISTANCE AND A SECOND RESISTOR OF RELATIVELY LARGE RESISTANCE CONNECTED IN SERIES WITH EACH OTHER TO FORM A SERIES CIRCUIT, MEANS FOR IMPRESSING THE ERROR SIGNAL AS A VOLTAGE ACROSS SAID SERIES CIRCUIT, RECTIFIER MEANS CONNECTED IN SERIES WITH SAID FIRST RESISTOR AND IN PARALLEL WITH SAID SECOND RESISTOR TO FORM A BRANCH CIRCUIT, SAID RECTIFIER BEING POLED TO CONDUCT CURRENT FLOWING IN SAID FIRST RESISTOR AS A RESULT OF SAID IMPRESSION OF THE ERROR SIGNAL, MEANS FOR IMPRESSING THE RATE SIGNAL AS A VOLTAGE IN SAID BRANCH CIRCUIT IN OPPOSITION TO THE ERROR SIGNAL, AND MEANS AT THE TERMINALS OF SAID SECOND RESISTOR TO PROVIDE AN OUTPUT SIGNAL.
Claim 2
Dependent Claim
166 words
AN ELECTRICAL CIRCUIT COMPONENT FOR USE IN A POSITIONING SYSTEM AND RESPONSIVE TO A VARIABLE ERROR SIGNAL AND A RATE SIGNAL, EITHER OF WHICH MIGHT BE SMALLER THAN THE OTHER AT ANY INSTANT, TO PROVIDE AN OUTPUT SIGNAL PROPORTIONAL TO THE SMALLER OF THE ERROR AND RATE SIGNALS, SAID COMPONENT COMPRISING A FIRST RESISTOR OF RELATIVELY SMALL RESISTANCE AND A SECOND RESISTOR OF RELATIVELY LARGE RESISTANCE CONNECTED IN SERIES WITH EACH OTHER TO FORM A SERIES CIRCUIT, MEANS FOR IMPRESSING THE ERROR SIGNAL AS A VOLTAGE ACROSS SAID SERIES CIRCUIT, RECTIFIER MEANS CONNECTED IN SERIES WITH SAID FIRST RESISTOR AND IN PARALLEL WITH SAID SECOND RESISTOR TO FORM A BRANCH CIRCUIT, SAID RECTIFIER BEING POLED TO CONDUCT CURRENT FLOWING IN SAID FIRST RESISTOR AS A RESULT OF SAID IMPRESSION OF THE ERROR SIGNAL, MEANS FOR IMPRESSING THE RATE SIGNAL AS A VOLTAGE IN SAID BRANCH CIRCUIT IN OPPOSITION TO THE ERROR SIGNAL, AND MEANS AT THE TERMINALS OF SAID SECOND RESISTOR TO PROVIDE AN OUTPUT SIGNAL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |