Patent US3293468A successfully refreshed from Google Patents.
US3293468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saturistors comprising hard magnetic materials energized by alternating currents
Assignee: General Electric Co
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Filing: 1963-09-30
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Granted: 1966-12-20
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Philip L Alger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:47
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/16; H02K17/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN INDUCTION MOTOR COMPRISING: A WOUND ROTOR HAVING TWO OR MORE PARALLEL CONNECTED WINDINGS, A STATOR EQUIPPED WITH A POLE CHANGING WINDING, A REACTOR COMPRISING A LAMINATED MAGNETIC CORE HAVING LEGS OF HARD MAGNETIC MATERIAL OF MORE THAN ONE MILLION GAUSS-OERSTEDS STORED MAGNETIC ENERGY WHEN FULLY MAGNETIZED, A COIL ON EACH OF SAID LEGS ADAPTED FOR ENERGIZATION BY AN ALTERNATING CURRENT, SAID COILS BEING CONNECTED IN SERIES WITH SAID ROTOR WINDINGS, SAID COILS AND ROTOR WINDINGS BEING CONNECTED IN SUCH A WAY THAT WHEN THE STATOR WINDING WITH ONE NUMBER OF POLES IS ENERGIZED, CURRENTS IN EACH PHASE OF THE PARALLEL CONNECTED ROTOR WINDINGS FLOW IN THE SAME DIRECTION, AND WHEN THE STATOR WINDING IS ENERGIZED WITH THE OTHER NUMBER OF POLES OF THE CURRENTS IN THE PARALLEL CONNECTED ROTOR WINDINGS FLOW IN OPPOSITE DIRECTIONS.
Claim 2
Dependent Claim
135 words
AN INDUCTION MOTOR COMPRISING: A WOUND ROTOR HAVING TWO OR MORE PARALLEL CONNECTED WINDINGS, A STATOR EQUIPPED WITH A POLE CHANGING WINDING, A REACTOR COMPRISING A LAMINATED MAGNETIC CORE HAVING LEGS OF HARD MAGNETIC MATERIAL OF MORE THAN ONE MILLION GAUSS-OERSTEDS STORED MAGNETIC ENERGY WHEN FULLY MAGNETIZED, A COIL ON EACH OF SAID LEGS ADAPTED FOR ENERGIZATION BY AN ALTERNATING CURRENT, SAID COILS BEING CONNECTED IN SERIES WITH SAID ROTOR WINDINGS, SAID COILS AND ROTOR WINDINGS BEING CONNECTED IN SUCH A WAY THAT WHEN THE STATOR WINDING WITH ONE NUMBER OF POLES IS ENERGIZED, CURRENTS IN EACH PHASE OF THE PARALLEL CONNECTED ROTOR WINDINGS FLOW IN THE SAME DIRECTION, AND WHEN THE STATOR WINDING IS ENERGIZED WITH THE OTHER NUMBER OF POLES OF THE CURRENTS IN THE PARALLEL CONNECTED ROTOR WINDINGS FLOW IN OPPOSITE DIRECTIONS.
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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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |