US3198975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eddy current coupling
Assignee: General Electric Co
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Filing: 1962-03-02
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Granted: 1965-08-03
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Expires: 1982-03-02
Abstract
No abstract record available.
Inventors
- 👤 Fisher Alec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
AN EDDY CURRENT COUPLING COMPRISING: A HOUSING MEMBER; FIRST AND SECOND AXIALLY ALIGNED SHAFTS ROTATABLY SUPPORTED BY SAID HOUSING; A FLUX-CONCENTRATING MEMBER MOUNTED ON SAID FIRST OF SAID SHAFTS FOR ROTATION THEREWITH; AN INDUCTOR MEMBER ADAPTED TO BE ROTATABLY DRIVE BY THE SECOND OF SAID SHAFTS, SAID INDUCTION MEMBER COMPRISING AN ANNULAR INDUCTOR DRUM PORTION CONCENTRICALLY OVERLYING SAID FLUX-CONCENTRATING MEMBER AND HAVING AN IMPERFORATE WEB PORTION SUPPORTING ONE END OF SAID DRUM PORTION THEREOF ON SAID SECOND SHAFT; AIR INLET APERTURES DEFINED IN SAID HOUSING ADJACENT THE SAID SUPPORTED END OF SAID DRUM; FAN MEANS ON SAID WEB PORTION ADAPTED TO DRAW AIR INTO SAID HOUSING AND DIRECT AIR OVER THE OUTER SURFACE OF SAID DRUM PORTION TO REMOVE HEAT THEREFROM; AIR EXHAUST APERTURES DEFINED IN SAID HOUSING ADJACENT THE OTHER END OF SAID DRUM PORTION WHEREBY UPON ROTATION OF SAID SECOND OF SAID SHAFTS AIR IS DRAWN INTO SAID HOUSING BY SAID FAN MEANS, AND DIRECTED OVER THE OUTER SURFACE OF SAID DRUM PORTION TOWARD THE OTHER END OF SAID DRUM PORTION; AND SEALING MEANS IN SAID HOUSING COOPERATING WITH SAID OTHER END OF SAID DRUM PORTION TO DIRECT AFTER FLOWING OVER SAID DRUM PORTION THROUGH SAID EXHAUST APERTURES SAID BLOCK ENTRANCE OF AIR FLOWING INTO THE INTERIOR OF SAID DRUM PORTION.
Claim 2
Dependent Claim
213 words
AN EDDY CURRENT COUPLING COMPRISING: A HOUSING MEMBER; FIRST AND SECOND AXIALLY ALIGNED SHAFTS ROTATABLY SUPPORTED BY SAID HOUSING; A FLUX-CONCENTRATING MEMBER MOUNTED ON SAID FIRST OF SAID SHAFTS FOR ROTATION THEREWITH; AN INDUCTOR MEMBER ADAPTED TO BE ROTATABLY DRIVE BY THE SECOND OF SAID SHAFTS, SAID INDUCTION MEMBER COMPRISING AN ANNULAR INDUCTOR DRUM PORTION CONCENTRICALLY OVERLYING SAID FLUX-CONCENTRATING MEMBER AND HAVING AN IMPERFORATE WEB PORTION SUPPORTING ONE END OF SAID DRUM PORTION THEREOF ON SAID SECOND SHAFT; AIR INLET APERTURES DEFINED IN SAID HOUSING ADJACENT THE SAID SUPPORTED END OF SAID DRUM; FAN MEANS ON SAID WEB PORTION ADAPTED TO DRAW AIR INTO SAID HOUSING AND DIRECT AIR OVER THE OUTER SURFACE OF SAID DRUM PORTION TO REMOVE HEAT THEREFROM; AIR EXHAUST APERTURES DEFINED IN SAID HOUSING ADJACENT THE OTHER END OF SAID DRUM PORTION WHEREBY UPON ROTATION OF SAID SECOND OF SAID SHAFTS AIR IS DRAWN INTO SAID HOUSING BY SAID FAN MEANS, AND DIRECTED OVER THE OUTER SURFACE OF SAID DRUM PORTION TOWARD THE OTHER END OF SAID DRUM PORTION; AND SEALING MEANS IN SAID HOUSING COOPERATING WITH SAID OTHER END OF SAID DRUM PORTION TO DIRECT AFTER FLOWING OVER SAID DRUM PORTION THROUGH SAID EXHAUST APERTURES SAID BLOCK ENTRANCE OF AIR FLOWING INTO THE INTERIOR OF SAID DRUM PORTION.
References Cited (Backward Citations)
US3047754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |