Patent FR872877A successfully refreshed from Google Patents.
Patent US3405283A successfully refreshed from Google Patents.
US3405283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical transformer apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1965-08-20
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Granted: 1968-10-08
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Expires: 1985-08-20
Abstract
No abstract record available.
Inventors
- 👤 Merrill G Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:09
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/06; H01F27/40; H01F27/402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN COMBINATION, A TRANSFORMER COMPRISING A METALLIC CASING, A MAGNETIC CORE IN SAID CASING, FIRST WINDING MEANS INDUCTIVELY ASSOCIATED WITH SAID MAGNETIC CORE, MEANS FOR CONNECTING AN INPUT TO SAID FIRST WINDING MEANS, SECOND WINDING MEANS INDUCTIVELY ASSOCIATED WITH SAID MAGNETIC CORE SO THAT A VOLTAGE IS INDUCED, IN SAID SECOND WINDING MEANS, AN AUXILIARY METALLIC ANODE SPACED FROM SAID METALLIC TRANSFORMER CASING, MEANS RECTIFYING A PORTION OF THE CURRENT DUE TO VOLTAGE INDUCED IN SAID SECOND WINDING MEANS, AND MEANS CONNECTING THE OUTPUT FROM SAID RECTIFYING MEANS BETWEEN SAID METALLIC TRANSFORMER CASING THE SAID AUXILIARY ANODE.
Claim 2
Dependent Claim
97 words
IN COMBINATION, A TRANSFORMER COMPRISING A METALLIC CASING, A MAGNETIC CORE IN SAID CASING, FIRST WINDING MEANS INDUCTIVELY ASSOCIATED WITH SAID MAGNETIC CORE, MEANS FOR CONNECTING AN INPUT TO SAID FIRST WINDING MEANS, SECOND WINDING MEANS INDUCTIVELY ASSOCIATED WITH SAID MAGNETIC CORE SO THAT A VOLTAGE IS INDUCED, IN SAID SECOND WINDING MEANS, AN AUXILIARY METALLIC ANODE SPACED FROM SAID METALLIC TRANSFORMER CASING, MEANS RECTIFYING A PORTION OF THE CURRENT DUE TO VOLTAGE INDUCED IN SAID SECOND WINDING MEANS, AND MEANS CONNECTING THE OUTPUT FROM SAID RECTIFYING MEANS BETWEEN SAID METALLIC TRANSFORMER CASING THE SAID AUXILIARY ANODE.
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) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |