Patent US3237070A successfully refreshed from Google Patents.
US3237070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-balancing positional servo system
Assignee: Honeywell Inc
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Filing: 1963-07-31
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Granted: 1966-02-22
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Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 Inaba Yoji
- 👤 Shiragaki Ken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:43
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN ELECTRIC ACTUATOR FOR CONTROLLING POSITION IN PROPORTION TO THE MAGNITUDE OF AN INPUT SIGNAL COMPRISING: TWO POLARITY DISCRIMINATING CIRCUITS CONSISTING OF TWO DIODES AND TWO TRANSISTORS FOR DISCRIMINATING THE DIFFERENCE BETWEEN AN INPUT SIGNAL CURRENT AND A FEEDBACK SIGNAL CURRENT; TWO PAIRS OF SWITCHING CIRCUITS RECEIVING THE OUTPUT SINGAL OF SAID DISCRIMINATING CIRCUITS THROUGH A CURRENT TRANSFORMER AND A RECTIFYING CIRCUIT AND CONSISTING OF A PLURALITY OF DIODES AND SILICON CONTROLLED RECTIFIERS; A BALANCING MOTOR HAVING WINDINGS ADAPTED TO RECEIVE THE OUTPUT SIGNALS OF EACH OF SAID SWITCHING CIRCUITS; A POTENTIONETER HAVING A SLIDER INTERLOCKING WITH SAID BALANCING MOTOR; AND A FEEDBACK CIRCUIT CONNECTED TO SAID POTENTIOMETER AND GENERATING SAID FEEDBACK SIGNAL.
Claim 2
Dependent Claim
113 words
AN ELECTRIC ACTUATOR FOR CONTROLLING POSITION IN PROPORTION TO THE MAGNITUDE OF AN INPUT SIGNAL COMPRISING: TWO POLARITY DISCRIMINATING CIRCUITS CONSISTING OF TWO DIODES AND TWO TRANSISTORS FOR DISCRIMINATING THE DIFFERENCE BETWEEN AN INPUT SIGNAL CURRENT AND A FEEDBACK SIGNAL CURRENT; TWO PAIRS OF SWITCHING CIRCUITS RECEIVING THE OUTPUT SINGAL OF SAID DISCRIMINATING CIRCUITS THROUGH A CURRENT TRANSFORMER AND A RECTIFYING CIRCUIT AND CONSISTING OF A PLURALITY OF DIODES AND SILICON CONTROLLED RECTIFIERS; A BALANCING MOTOR HAVING WINDINGS ADAPTED TO RECEIVE THE OUTPUT SIGNALS OF EACH OF SAID SWITCHING CIRCUITS; A POTENTIONETER HAVING A SLIDER INTERLOCKING WITH SAID BALANCING MOTOR; AND A FEEDBACK CIRCUIT CONNECTED TO SAID POTENTIOMETER AND GENERATING SAID FEEDBACK SIGNAL.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |