Patent EP0315371A2 successfully refreshed from Google Patents.
US3133520A
Expired / Lapsed
US
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Automatic turn control system
Assignee: Unisys Corp
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Filing: 1962-04-17
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Granted: 1964-05-19
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Expires: 1982-04-17
Abstract
No abstract record available.
Inventors
- 👤 Bentkowsky Jerome
- 👤 Jr Joseph H Chadwick
- 👤 Virgel E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:18
CPC Classifications
B; B63; B63G; B63G8/00; B63G8/14; B63G8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A SYSTEM FOR AUTOMATICALLY STEERING A NAVIGABLE CRAFT INCLUDING SERVO MEANS OPERABLE TO TURN THE CRAFT HAVING A SYNCHRO PROVIDING A REPEATBACK OUTPUT; MEANS FOR CHANGING THE HEADING OF THE CRAFT TO AN ORDERED HEADING PROVIDING A HEADING ERROR OUTPUT INCLUDING A DIRECTIONAL REFERENCE HAVING A SYNCHRO WITH A HEADING INPUT, A MANUALLY MOVABLE ORDER MEMBER, A HEADING ORDER INDICATOR WITH A MOVABLE ELEMENT CONNECTED TO THE MEMBER, AND AN ORDER SYNCHRO CONNECTED TO THE MEMBER HAVING AN INPUT DEPENDING ON THE MOVEMENT OF THE ORDER MEMBER; MEANS FOR PROVIDING AN OUTPUT IN ACCORDANCE WITH THE RATE OF TURN OF THE CRAFT; MEANS FOR COMBINING THE HEADING ERROR OUTPUT AND TURN RATE OUTPUT INCLUDING MEANS FOR ADJUSTING THE SENSITIVITY OF ONE OF THE OUTPUTS LINEARLY, MEANS FOR ADJUSTING THE SENSITIVITY OF THE OTHER OF THE OUTPUTS NON-LINEARLY AND MEANS FOR LIMITING THE ADJUSTED OUTPUT OF SAID HEADING ERROR OUTPUT MEANS; AND MEANS OPERATIVELY CONNECTING SAID COMBINING MEANS AND REPEATBACK SYNCHRO TO THE SERVO MEANS.
Claim 2
Independent Claim
164 words
A SYSTEM FOR AUTOMATICALLY STEERING A NAVIGABLE CRAFT INCLUDING SERVO MEANS OPERABLE TO TURN THE CRAFT HAVING A SYNCHRO PROVIDING A REPEATBACK OUTPUT; MEANS FOR CHANGING THE HEADING OF THE CRAFT TO AN ORDERED HEADING PROVIDING A HEADING ERROR OUTPUT INCLUDING A DIRECTIONAL REFERENCE HAVING A SYNCHRO WITH A HEADING INPUT, A MANUALLY MOVABLE ORDER MEMBER, A HEADING ORDER INDICATOR WITH A MOVABLE ELEMENT CONNECTED TO THE MEMBER, AND AN ORDER SYNCHRO CONNECTED TO THE MEMBER HAVING AN INPUT DEPENDING ON THE MOVEMENT OF THE ORDER MEMBER; MEANS FOR PROVIDING AN OUTPUT IN ACCORDANCE WITH THE RATE OF TURN OF THE CRAFT; MEANS FOR COMBINING THE HEADING ERROR OUTPUT AND TURN RATE OUTPUT INCLUDING MEANS FOR ADJUSTING THE SENSITIVITY OF ONE OF THE OUTPUTS LINEARLY, MEANS FOR ADJUSTING THE SENSITIVITY OF THE OTHER OF THE OUTPUTS NON-LINEARLY AND MEANS FOR LIMITING THE ADJUSTED OUTPUT OF SAID HEADING ERROR OUTPUT MEANS; AND MEANS OPERATIVELY CONNECTING SAID COMBINING MEANS AND REPEATBACK SYNCHRO TO THE SERVO MEANS.
References Cited (Backward Citations)
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Cited
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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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |