Patent US3358280A successfully refreshed from Google Patents.
US3358280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchro data conversion method and apparatus
Assignee: Vitro Corp of America
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Filing: 1964-06-26
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Granted: 1967-12-12
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Jr James G Dougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:16
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/38; G08C19/46; G08C19/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A SYNCHRO DATA CONVERSION APPARATUS INCLUDING A SYNCHRO TRANSMITTER AND THE LIKE HAVING A ROTOR WINDING AND THREE STATOR WINDINGS, WHEREIN THE ROTOR WINDING IS ADAPTED TO HAVE AN ALTERNATING CURRENT EXCITATION VOLTAGE APPLIED THERETO AND TO BE ROTATED WITH RESPECT TO THE STATOR WINDINGS, THE COMBINATION THEREWITH OF OUTPUT MEANS, TRANSFORMER MEANS HAVING PRIMARY WINDING MEANS AND SECONDARY WINDING MEANS, SAID PRIMARY WINDING MEANS BEING ADAPTED TO BE CONNECTED TO TWO OF THE STATOR WINDINGS FOR COMBINING ELECTRICAL SIGNALS APPEARING ACROSS THE TWO STATOR WINDINGS IN SUBTRACTIVE RELATION, SAID SECONDARY WINDING MEANS HAVING OPPOSITE ENDS, ONE OF SAID OPPOSITE ENDS OF SAID SECONDARY WINDING MEANS BEING ELECTRICALLY COUPLED TO A REFERENCE POINT OF GIVEN POTENTIAL, VOLTAGE DIVIDER MEANS FOR DIVIDING SAID COMBINED SUBSTRACTIVE SIGNAL BY A FIXED PROPORTIONATE FACTOR INDEPENDENT OF FREQUENCY AND HAVING AN INPUT COUPLED TO THE OTHER OF SAID OPPOSITE ENDS OF SAID SECONDARY WINDING MEANS AND AN OUTPUT COUPLED TO SAID OUTPUT MEANS TO
Claim 2
Dependent Claim
159 words
A SYNCHRO DATA CONVERSION APPARATUS INCLUDING A SYNCHRO TRANSMITTER AND THE LIKE HAVING A ROTOR WINDING AND THREE STATOR WINDINGS, WHEREIN THE ROTOR WINDING IS ADAPTED TO HAVE AN ALTERNATING CURRENT EXCITATION VOLTAGE APPLIED THERETO AND TO BE ROTATED WITH RESPECT TO THE STATOR WINDINGS, THE COMBINATION THEREWITH OF OUTPUT MEANS, TRANSFORMER MEANS HAVING PRIMARY WINDING MEANS AND SECONDARY WINDING MEANS, SAID PRIMARY WINDING MEANS BEING ADAPTED TO BE CONNECTED TO TWO OF THE STATOR WINDINGS FOR COMBINING ELECTRICAL SIGNALS APPEARING ACROSS THE TWO STATOR WINDINGS IN SUBTRACTIVE RELATION, SAID SECONDARY WINDING MEANS HAVING OPPOSITE ENDS, ONE OF SAID OPPOSITE ENDS OF SAID SECONDARY WINDING MEANS BEING ELECTRICALLY COUPLED TO A REFERENCE POINT OF GIVEN POTENTIAL, VOLTAGE DIVIDER MEANS FOR DIVIDING SAID COMBINED SUBSTRACTIVE SIGNAL BY A FIXED PROPORTIONATE FACTOR INDEPENDENT OF FREQUENCY AND HAVING AN INPUT COUPLED TO THE OTHER OF SAID OPPOSITE ENDS OF SAID SECONDARY WINDING MEANS AND AN OUTPUT COUPLED TO SAID OUTPUT MEANS TO
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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |