Patent US4478716A successfully refreshed from Google Patents.
Patent US3173116A successfully refreshed from Google Patents.
US3173116A
Expired / Lapsed
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Electrical apparatus having magnetic and non-magnetic shielding
Assignee: Westinghouse Electric Corp
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Filing: 1962-12-31
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Granted: 1965-03-09
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Wilbur G Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:04
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/34; H01F27/36; H01F27/361
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A MAGNETIC FLUX SHIELDING SYSTEM FOR ELECTRIC INDUCTIVE APPARATUS COMPRISING A PLURALITY OF BUNDLES OF FERROMAGNETIC MATERIAL DISPOSED IN SPACED RELATION ABOUT SAID INDUCTIVE APPARATUS, A FIRST PLURALITY OF ELECTRICALLY CONDUCTIVE EDDY CURRENT SHIELDS DISPOSED INTERMEDIATE SAID BUNDLES OF FERROMAGNETIC MATERIAL, SAID FIRST PLU-
Claim 2
Dependent Claim
44 words
A MAGNETIC FLUX SHIELDING SYSTEM FOR ELECTRIC INDUCTIVE APPARATUS COMPRISING A PLURALITY OF BUNDLES OF FERROMAGNETIC MATERIAL DISPOSED IN SPACED RELATION ABOUT SAID INDUCTIVE APPARATUS, A FIRST PLURALITY OF ELECTRICALLY CONDUCTIVE EDDY CURRENT SHIELDS DISPOSED INTERMEDIATE SAID BUNDLES OF FERROMAGNETIC MATERIAL, SAID FIRST PLU-
References Cited (Backward Citations)
US1335837A
Cited
US2340081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |