US3078409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical power converter
Assignee: Motors Liquidation Co
•
Filing: 1959-02-26
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Granted: 1963-02-19
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Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph H Bertsche
- 👤 Richard A Carlson
- 👤 Lewis R Hetzler
- 👤 Louis J Raver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; H02K11/00; H02K11/04; H02K11/049; H02K11/05; Y; Y10; Y10S; Y10S257/00; Y10S257/909
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
IN COMBINATION, AN ALTERNATING-CURRENT GENERATOR HAVING A HOUSING FORMED IN PART BY AN END FRAME ENCLOSING A FIXED STATOR WINDING AND A FIXED FIELD WINDING THAT IS SPACED FROM SAID STATOR WINDING, A ROTOR INCLUDING A PAIR OF MAGNETIC PARTS SEPARATED BY A NONMAGNETIC PART ROTATABLE BETWEEN SAID STATOR WINDING AND FIELD WINDING, A MEMBER ATTACHED TO SAID END FRAME AND FORMING A COMPARTMENT THEREWITH, A SEMICONDUCTOR RECTIFIER HAVING AN OUTER METAL PART LOCATED IN AN OPENING FORMED IN SAID END FRAME AND EXTENDING INTO SAID COMPARTMENT, MEANS ELECTRICALLY CONNECTING SAID RECTIFIER AND STATOR WINDINGS, MEANS FOR SUPPLYING SAID COMPARTMENT WITH A COOLING MEDIUM AT A POINT LOCATED BELOW SAID RECTIFIER, AND PASSAGE MEANS CONNECTING SAID COMPARTMENT AND THE INTERIOR OF SAID HOUSING HAVING AN INLET LOCATED ABOVE SAID RECTIFIER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |