US3072811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric coupling
Assignee: Eaton Corp
•
Filing: 1959-11-18
•
Granted: 1963-01-08
•
Expires: 1979-11-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Jaeschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:59
CPC Classifications
H; H02; H02K; H02K49/00; H02K49/02; H02K49/04; H02K49/043
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
AN ELECTRIC COUPLING COMPRISING A CASING, A ROTATABLE EDDY-CURRENT DRUM THEREIN OPEN AT ONE END, SUPPORTING MEANS FOR THE DRUM LOCATED AT ITS OTHER END, SAID SUPPORTING MEANS HAVING COOLANT INLET OPENING MEANS, A ROTATABLE FIELD POLE MEMBER EXTENDING INTO THE DRUM THROUGH ITS OPEN END, BEARING MEANS FOR THE DRUM AND THE POLE MEMBER WITHIN THE CASING, MEANS ADAPTED TO INTRODUCE COOLANT INTO THE DRUM FOR MOVEMENT THERETHROUGH AND CENTRIFUGAL EXIT FROM ITS OPEN END INTO THE CASING, SAID CASING HAVING A COOLANT OUTLET THERETHROUGH LOCATED SUBSTANTIALLY IN THE PLANE OF THE OPEN END OF THE DRUM, SAID CASING BEING INTERIORLY FORMED SUBSTANTIALLY IN THE PLANE OF
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |