Patent DE646559C successfully refreshed from Google Patents.
US3141101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushless synchro construction
Assignee: RTX Corp
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Filing: 1960-12-02
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Granted: 1964-07-14
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Expires: 1980-12-02
Abstract
No abstract record available.
Inventors
- 👤 Morris F Ketay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:14
CPC Classifications
H; H02; H02K; H02K24/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A SYNCHRONOUS DEVICE INCLUDING IN COMBINATION A STATOR, A SHAFT, MEANS MOUNTING SAID SHAFT FOR ROTARY MOVEMENT ON SAID STATOR, MEANS FORMING AN ANNULAR WINDING-RECEIVING SLOT IN SAID STATOR, SAID SLOT EXTENDING AROUND SAID SHAFT AT A LOCATION ALONG THE LENGTH OF SAID SHAFT, MEANS FORMING STATOR WINDING-RECEIVING SLOTS IN SAID STATOR, SAID STATOR WINDING-RECEIVING SLOTS BEING DISPOSED GENERALLY AT SAID LOCATION ALONG THE SHAFT LENGTH IN RADIALLY SPACED RELATION TO SAID ANNULAR SLOT, A PRIMARY WINDING DISPOSED IN SAID ANNULAR SLOT, SAID PRIMARY WINDING HAVING AN AXIS EXTENDING SUBSTANTIALLY PARALLEL TO SAID SHAFT AXIS, A STATOR WINDING DISPOSED IN SAID STATOR WINDING SLOTS, SAID STATOR WINDING COMPRISING A COIL HAVING AN AXIS SUBSTANTIALLY PERPENDICULAR TO SAID SHAFT AXIS, A SECONDARY WINDING HAVING AN AXIS EXTENDING SUBSTANTIALLY PARALLEL TO SAID SHAFT AXIS, A ROTOR WINDING, SAID ROTOR WINDING COMPRISING A COIL HAVING AN AXIS EXTENDING SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF SAID SHAFT, MEANS MOUNTING SAID SECONDARY AND ROTOR WINDINGS ON SAID SHAFT IN INDUCTIVE RELATIONSHIP RESPECTIVELY WITH SAID PRIMARY WINDING AND WITH SAID STATOR WINDING AND MEANS CONNECTING SAID SECONDARY WINDING TO SAID ROTOR WINDING.
Claim 2
Dependent Claim
186 words
A SYNCHRONOUS DEVICE INCLUDING IN COMBINATION A STATOR, A SHAFT, MEANS MOUNTING SAID SHAFT FOR ROTARY MOVEMENT ON SAID STATOR, MEANS FORMING AN ANNULAR WINDING-RECEIVING SLOT IN SAID STATOR, SAID SLOT EXTENDING AROUND SAID SHAFT AT A LOCATION ALONG THE LENGTH OF SAID SHAFT, MEANS FORMING STATOR WINDING-RECEIVING SLOTS IN SAID STATOR, SAID STATOR WINDING-RECEIVING SLOTS BEING DISPOSED GENERALLY AT SAID LOCATION ALONG THE SHAFT LENGTH IN RADIALLY SPACED RELATION TO SAID ANNULAR SLOT, A PRIMARY WINDING DISPOSED IN SAID ANNULAR SLOT, SAID PRIMARY WINDING HAVING AN AXIS EXTENDING SUBSTANTIALLY PARALLEL TO SAID SHAFT AXIS, A STATOR WINDING DISPOSED IN SAID STATOR WINDING SLOTS, SAID STATOR WINDING COMPRISING A COIL HAVING AN AXIS SUBSTANTIALLY PERPENDICULAR TO SAID SHAFT AXIS, A SECONDARY WINDING HAVING AN AXIS EXTENDING SUBSTANTIALLY PARALLEL TO SAID SHAFT AXIS, A ROTOR WINDING, SAID ROTOR WINDING COMPRISING A COIL HAVING AN AXIS EXTENDING SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF SAID SHAFT, MEANS MOUNTING SAID SECONDARY AND ROTOR WINDINGS ON SAID SHAFT IN INDUCTIVE RELATIONSHIP RESPECTIVELY WITH SAID PRIMARY WINDING AND WITH SAID STATOR WINDING AND MEANS CONNECTING SAID SECONDARY WINDING TO SAID ROTOR WINDING.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |