US3289019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating machine
Assignee: General Electric Co
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Filing: 1965-05-06
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Granted: 1966-11-29
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Expires: 1985-05-06
Abstract
No abstract record available.
Inventors
- 👤 Buchhold Theodor Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:15
CPC Classifications
H; H02; H02K; H02K55/00; Y; Y02; Y02E; Y02E40/00; Y02E40/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
IN ELECTRIC MOTOR FOR DEVELOPING ROTATIONAL MECHANICAL POWER IN A CRYOGENIC ENVIROMENT COMPRISING A MOTOR HOUSING, A STATOR SUPPORTED BY SAID HOUSING AND PROVIDING WITH ALTERNATING CURRENT WINDINGS FOR PRODUCING A MAGNETIC FIELD ROTATING IN PROPORTION TO THE FREQUENCY OF THE ALTERNATING CURRENT PROVIDED SAID WINDINGS, A METALLIC ROTOR ADAPTED FOR CONTINUOUS ROTATION ABOUT ITS AXIS, SAID ROTOR BEING PROVIDED WITH A SUPERCONDUCTIVE PORTION AS WELL AS A NON-SUPERCONDUCTIVE PORTION IN THE SAME CRYOGENIC ENVIRONMNET, WHEREIN THE SAID NON-SUPERCONDUCTIVE PORTION IS DISPOSED IN JUXTAPOSITION WITH RESPECT TO SAID STATOR AT A SUBSTANTIALLY CONSTANT SPACING FROM SAID STATOR IN THE MAGNETIC FIELD THEREOF, AND MAGNETIC BEARING MEANS SUPPORTED BY SAID HOUSING POSITIONED IN CONFRONTING RELATION AROUND A SUPERCONDUCTIVE PORTION OF SAID ROTOR FOR PROVIDING A MAGNETIC FIELD CONFINING THE ROTOR IN ALIGNED RELATION WITH SAID AXIS BY VIRTUE OF THE SAID SUPERCONDUCTIVE PORTION''S EXCLUDING THE MAGNETIC FIELD OF SAID BEARING MEANS, SAID ROTATING FIELD OF SAID STATOR PENETRATING ONLY THE NONSUPERCONDUCTIVE PORTION OF SAID ROTOR INDUCING HEAVY CURRENTS THEREIN AS AIDED BY THE RESISTANCE REDUCING PROPERTY OF SAID CRYOGENIC ENVIRONMENT AND REACTIONG WITH SAID ROTAING FIELD TO PRODUCE ROTATION OF SAID ROTOR ABOUT SAID AXIS.
Claim 2
Dependent Claim
194 words
IN ELECTRIC MOTOR FOR DEVELOPING ROTATIONAL MECHANICAL POWER IN A CRYOGENIC ENVIROMENT COMPRISING A MOTOR HOUSING, A STATOR SUPPORTED BY SAID HOUSING AND PROVIDING WITH ALTERNATING CURRENT WINDINGS FOR PRODUCING A MAGNETIC FIELD ROTATING IN PROPORTION TO THE FREQUENCY OF THE ALTERNATING CURRENT PROVIDED SAID WINDINGS, A METALLIC ROTOR ADAPTED FOR CONTINUOUS ROTATION ABOUT ITS AXIS, SAID ROTOR BEING PROVIDED WITH A SUPERCONDUCTIVE PORTION AS WELL AS A NON-SUPERCONDUCTIVE PORTION IN THE SAME CRYOGENIC ENVIRONMNET, WHEREIN THE SAID NON-SUPERCONDUCTIVE PORTION IS DISPOSED IN JUXTAPOSITION WITH RESPECT TO SAID STATOR AT A SUBSTANTIALLY CONSTANT SPACING FROM SAID STATOR IN THE MAGNETIC FIELD THEREOF, AND MAGNETIC BEARING MEANS SUPPORTED BY SAID HOUSING POSITIONED IN CONFRONTING RELATION AROUND A SUPERCONDUCTIVE PORTION OF SAID ROTOR FOR PROVIDING A MAGNETIC FIELD CONFINING THE ROTOR IN ALIGNED RELATION WITH SAID AXIS BY VIRTUE OF THE SAID SUPERCONDUCTIVE PORTION''S EXCLUDING THE MAGNETIC FIELD OF SAID BEARING MEANS, SAID ROTATING FIELD OF SAID STATOR PENETRATING ONLY THE NONSUPERCONDUCTIVE PORTION OF SAID ROTOR INDUCING HEAVY CURRENTS THEREIN AS AIDED BY THE RESISTANCE REDUCING PROPERTY OF SAID CRYOGENIC ENVIRONMENT AND REACTIONG WITH SAID ROTAING FIELD TO PRODUCE ROTATION OF SAID ROTOR ABOUT SAID AXIS.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |