US3229132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eddy-current coupling
Assignee: Individual
•
Filing: 1962-06-11
•
Granted: 1966-01-11
•
Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 Cohen Elie
- 👤 Roth Szymon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:50
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN EDDY-CURRENT COUPLING COMPRISING HOUSING MEANS INCLUDING A STATOR AND DEFINING A CHAMBER THEREWITHIN HAVING AN AXIS AND AXIALLY SPACED ENDS; A FIRST AND A SECOND SHAFT EXTENDING INTO SAID CHAMBER FROM OPPOSITE ENDS THEREOF COAXIALLY WITH SAID CHAMBER AND JOURNALED FOR ROTATION THEREIN; AN INNER ROTOR ON SAID FIRST SHAFT AND AN OUTER ROTOR ON SAID SECOND SHAFT AND PARTLY SURROUNDING SAID INNER ROTOR, SAID INNER ROTOR BEING FORMED WITH A PLURALITY OF PERIPHERALLY SPACED TEETH AND CONSTITUTING A HOMOPOLAR INDUCTOR, SAID OUTER ROTOR FORMING AND ARMATURE AND COMPRISING A RING OF MAGNETICALLY PERMEABLE MATERIAL COAXIAL WITH SAID SECOND SHAFT; A DISK OF LIGHTWEIGHT ALLOY, DISPOSED AT ONE END OF SAID CHAMBER COAXIAL WITH SAID OUTER ROTOR AND SUBSTANTIALLY CLOSING SAID CHAMBER AGAINST AIR CIRCULATION, CONTIGUOUS WITH SAID
Claim 2
Dependent Claim
129 words
AN EDDY-CURRENT COUPLING COMPRISING HOUSING MEANS INCLUDING A STATOR AND DEFINING A CHAMBER THEREWITHIN HAVING AN AXIS AND AXIALLY SPACED ENDS; A FIRST AND A SECOND SHAFT EXTENDING INTO SAID CHAMBER FROM OPPOSITE ENDS THEREOF COAXIALLY WITH SAID CHAMBER AND JOURNALED FOR ROTATION THEREIN; AN INNER ROTOR ON SAID FIRST SHAFT AND AN OUTER ROTOR ON SAID SECOND SHAFT AND PARTLY SURROUNDING SAID INNER ROTOR, SAID INNER ROTOR BEING FORMED WITH A PLURALITY OF PERIPHERALLY SPACED TEETH AND CONSTITUTING A HOMOPOLAR INDUCTOR, SAID OUTER ROTOR FORMING AND ARMATURE AND COMPRISING A RING OF MAGNETICALLY PERMEABLE MATERIAL COAXIAL WITH SAID SECOND SHAFT; A DISK OF LIGHTWEIGHT ALLOY, DISPOSED AT ONE END OF SAID CHAMBER COAXIAL WITH SAID OUTER ROTOR AND SUBSTANTIALLY CLOSING SAID CHAMBER AGAINST AIR CIRCULATION, CONTIGUOUS WITH SAID
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |