US2659043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for converting direct current into alternating current
Assignee: NORDEN LAB CORP
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Filing: 1949-10-01
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Granted: 1953-11-10
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Expires: 1969-10-01
Abstract
No abstract record available.
Inventors
- 👤 James E Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:19
CPC Classifications
H; H02; H02M; H02M11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
APPARATUS FOR CONVERTING DIRECT CURRENT INTO ALTERNATING CURRENT, INCLUDING IN COMBINATION A MAGNETIC CIRCUIT, A BISMUTH CONDUCTOR POSITIONED IN SAID MAGNETIC CIRCUIT, CIRCUIT MEANS INCLUDING A VOLTAGE DROPPING RESISTOR FOR IMPRESSING A UNIDIRECTIONAL POTENTIAL ACROSS SAID BISMUTH CONDUCTOR, ALTERNATING MEANS FOR MODULATING THE MAGNETIC FLUX FLOWING THROUGH SAID MAGNETIC CURCUIT WHEREBY TO VARY THE RESISTANCE OF SAID BISMUTH CONDUCTOR, AND A PAIR OF CONDUCTORS CONNECTED ACROSS THE BISMUTH CONDUCTOR TO REMOVE THE DESIRED ALTERNATING CURRENT.
Claim 2
Dependent Claim
75 words
APPARATUS FOR CONVERTING DIRECT CURRENT INTO ALTERNATING CURRENT, INCLUDING IN COMBINATION A MAGNETIC CIRCUIT, A BISMUTH CONDUCTOR POSITIONED IN SAID MAGNETIC CIRCUIT, CIRCUIT MEANS INCLUDING A VOLTAGE DROPPING RESISTOR FOR IMPRESSING A UNIDIRECTIONAL POTENTIAL ACROSS SAID BISMUTH CONDUCTOR, ALTERNATING MEANS FOR MODULATING THE MAGNETIC FLUX FLOWING THROUGH SAID MAGNETIC CURCUIT WHEREBY TO VARY THE RESISTANCE OF SAID BISMUTH CONDUCTOR, AND A PAIR OF CONDUCTORS CONNECTED ACROSS THE BISMUTH CONDUCTOR TO REMOVE THE DESIRED ALTERNATING CURRENT.
References Cited (Backward Citations)
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Cited
US1543475A
Cited
US1596558A
Cited
US1810539A
Cited
US2482820A
Cited
US2464807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |