US3105189A
Expired / Lapsed
US
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Positional data system
Assignee: United States Atomic Energy Commission
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Filing: 1961-10-20
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Granted: 1963-09-24
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Expires: 1981-10-20
Abstract
No abstract record available.
Inventors
- 👤 George A Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
B; B25; B25J; B25J3/00; B25J3/04; G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G08; G08C; G08C19/00; G08C19/38; G08C19/46; G08C19/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
APPARATUS FOR PRODUCING A DIRECT CURRENT ERROR SIGNAL COMPRISING A FIRST DEVICE HAVING A SINGLE PHASE WINDING AND AN ASSOCIATED POLYPHASE WINDING, ONE OF SAID WINDINGS BEING WOUND ON A ROTOR AND THE OTHER ON A STATOR, A SECOND DEVICE HAVING A SINGLE PHASE WINDING AND AN ASSOCIATED POLYPHASE WINDING, ONE OF THE WINDINGS OF SAID SECOND DEVICE BEING WOUND ON A ROTOR AND THE OTHER ON A STATOR, MEANS FOR EXCITING THE POLYPHASE WINDINGS OF SAID FIRST AND SECOND DEVICES WITH A POLYPHASE ALTERNATING CURRENT, MEANS FOR OBTAINING THE PHASOR DIFFERENCE BETWEEN THE OUTPUT SIGNALS OF THE SINGLE PHASE WINDINGS OF SAID FIRST AND SECOND DEVICES, MEANS FOR SHIFTING THE PHASE OF ONE OF SAID OUTPUT SIGNALS 90*,
Claim 2
Dependent Claim
119 words
APPARATUS FOR PRODUCING A DIRECT CURRENT ERROR SIGNAL COMPRISING A FIRST DEVICE HAVING A SINGLE PHASE WINDING AND AN ASSOCIATED POLYPHASE WINDING, ONE OF SAID WINDINGS BEING WOUND ON A ROTOR AND THE OTHER ON A STATOR, A SECOND DEVICE HAVING A SINGLE PHASE WINDING AND AN ASSOCIATED POLYPHASE WINDING, ONE OF THE WINDINGS OF SAID SECOND DEVICE BEING WOUND ON A ROTOR AND THE OTHER ON A STATOR, MEANS FOR EXCITING THE POLYPHASE WINDINGS OF SAID FIRST AND SECOND DEVICES WITH A POLYPHASE ALTERNATING CURRENT, MEANS FOR OBTAINING THE PHASOR DIFFERENCE BETWEEN THE OUTPUT SIGNALS OF THE SINGLE PHASE WINDINGS OF SAID FIRST AND SECOND DEVICES, MEANS FOR SHIFTING THE PHASE OF ONE OF SAID OUTPUT SIGNALS 90*,
References Cited (Backward Citations)
US2634387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |