US3142029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding of foil wound electrical apparatus
Assignee: General Electric Co
•
Filing: 1960-08-22
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Granted: 1964-07-21
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Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Keen
- 👤 Anthony J Damasca
- 👤 Rabins Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:41
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2847; H01F27/288; H01F27/2885; H01F27/34; H01F27/36; H01F27/363; H01F2027/2857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN COMBINATION, AN ELECTRIC FOIL WINDING AND AN ELECTRIC SHIELD FOR REDUCING CURRENT CONCENTRATIONS AT AN EDGE OF SAID WINDING, SAID SHIELD COMPRISING A SUBSTANTIALLY RECTANGULAR SHEET OF ELECTRICAL CONDUCTING MATERIAL FORMED INTO A SUBSTANTIALLY CYLINDRICAL SHAPE FOR ENCOMPASSING SAID WINDING, THERE BEING A NARROW GAP SEPARATING THE ENDS OF SAID SHIELD, SAID SHIELD COMPRISING A FIRST EDGE PORTION, A SECOND EDGE PORTION, AND END PORTIONS CONNECTING SAID FIRST AND SECOND EDGE PORTIONS SO AS TO DEFINE A CLOSED OUTER PERIPHERAL LOOP PORTION, AN INTERTERMEDIATE PORTION INTEGRAL AT ONE END WITH AN END PORTION, AND SAID INTERMEDIATE PORTION EXTENDING INTO SAID LOOP PORTION.
Claim 2
Dependent Claim
103 words
IN COMBINATION, AN ELECTRIC FOIL WINDING AND AN ELECTRIC SHIELD FOR REDUCING CURRENT CONCENTRATIONS AT AN EDGE OF SAID WINDING, SAID SHIELD COMPRISING A SUBSTANTIALLY RECTANGULAR SHEET OF ELECTRICAL CONDUCTING MATERIAL FORMED INTO A SUBSTANTIALLY CYLINDRICAL SHAPE FOR ENCOMPASSING SAID WINDING, THERE BEING A NARROW GAP SEPARATING THE ENDS OF SAID SHIELD, SAID SHIELD COMPRISING A FIRST EDGE PORTION, A SECOND EDGE PORTION, AND END PORTIONS CONNECTING SAID FIRST AND SECOND EDGE PORTIONS SO AS TO DEFINE A CLOSED OUTER PERIPHERAL LOOP PORTION, AN INTERTERMEDIATE PORTION INTEGRAL AT ONE END WITH AN END PORTION, AND SAID INTERMEDIATE PORTION EXTENDING INTO SAID LOOP PORTION.
References Cited (Backward Citations)
DE468973C
Cited
US1717347A
Cited
US2608089A
Cited
US2714710A
Cited
US2608610A
Cited
US2738425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |