US3127549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing circuit for compound wound motor
Assignee: Motors Liquidation Co
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Filing: 1960-04-04
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Granted: 1964-03-31
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Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Harold B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:14
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/03; H02P7/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A DYNAMOELECTRIC MACHINE INCLUDING A ROTATABLE ARMATURE, A STATIONARY FIELD MAGNET ASSEMBLY, MEANS FOR EXCITING THE FIELD MAGNET ASSEMBLY INCLUDING A PAIR OF SERIES FIELD WINDINGS, ONE OF SUBSTANTIALLY MORE TURNS THAN THE OTHER, AND A PAIR OF SHUNT FIELD WINDINGS, ONE OF DIFFERENT WIRE SIZE THAN THE OTHER, SAID SHUNT FIELD WINDINGS BEING WOUND TO DEVELOP OPPOSING MAGNETOMOTIVE FORCES, AND MEANS FOR SIMULTANEOUSLY ENERGIZING ALL OF SAID FIELD WINDINGS AND SELECTIVELY CONNECTING ONE OF SAID SHUNT FIELD WINDINGS IN SHUNT ACROSS SAID ARMATURE, ONE OF SAID SERIES FIELD WINDINGS IN SERIES WITH SAID ARMATURE, AND THE OTHER OF SAID SERIES FIELD WINDINGS AND THE OTHER OF SAID SHUNT FIELD WINDINGS IN SERIES RELATION TO EACH OTHER AND IN SHUNT ACROSS SAID ARMATURE TO OBTAIN ROTATION OF THE ARMATURE IN OPPOSITE DIRECTIONS WITH DIFFERENT PERFORMANCE CHARACTERISTICS.
Claim 2
Dependent Claim
136 words
A DYNAMOELECTRIC MACHINE INCLUDING A ROTATABLE ARMATURE, A STATIONARY FIELD MAGNET ASSEMBLY, MEANS FOR EXCITING THE FIELD MAGNET ASSEMBLY INCLUDING A PAIR OF SERIES FIELD WINDINGS, ONE OF SUBSTANTIALLY MORE TURNS THAN THE OTHER, AND A PAIR OF SHUNT FIELD WINDINGS, ONE OF DIFFERENT WIRE SIZE THAN THE OTHER, SAID SHUNT FIELD WINDINGS BEING WOUND TO DEVELOP OPPOSING MAGNETOMOTIVE FORCES, AND MEANS FOR SIMULTANEOUSLY ENERGIZING ALL OF SAID FIELD WINDINGS AND SELECTIVELY CONNECTING ONE OF SAID SHUNT FIELD WINDINGS IN SHUNT ACROSS SAID ARMATURE, ONE OF SAID SERIES FIELD WINDINGS IN SERIES WITH SAID ARMATURE, AND THE OTHER OF SAID SERIES FIELD WINDINGS AND THE OTHER OF SAID SHUNT FIELD WINDINGS IN SERIES RELATION TO EACH OTHER AND IN SHUNT ACROSS SAID ARMATURE TO OBTAIN ROTATION OF THE ARMATURE IN OPPOSITE DIRECTIONS WITH DIFFERENT PERFORMANCE CHARACTERISTICS.
References Cited (Backward Citations)
US2452966A
Cited
US2443459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |