Patent US3171968A successfully refreshed from Google Patents.
US3171968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power converter circuit
Assignee: Individual
•
Filing: 1960-06-10
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Granted: 1965-03-02
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Expires: 1980-06-10
Abstract
No abstract record available.
Inventors
- 👤 Robert D Sanborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:02
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A POWER CONVERTER CIRCUIT COMPRISING FIRST AND SECOND ALTERNATING CURRENT SUPPLY MEANS, EACH OF SAID SUPPLY MEANS HAVING A LOW INTERNAL IMPEDANCE, THE MAXIMUM OUTPUT VOLTAGE OF SAID SECOND SUPPLY MEANS BEING SUBSTANTIALLY LESS THAN THE MAXIMUM OUTPUT VOLTAGE OF SAID FIRST SUPPLY MEANS, VOLTAGE CONTROL MEANS COUPLED TO SAID FIRST AND SECOND SUPPLY MEANS FOR VARYING THE OUTPUT VOLTAGES OF SAID SUPPLY MEANS IN OPPOSITE DIRECTIONS, FIRST AND SECOND OUTPUT TERMINALS, MEANS COUPLING SAID FIRST SUPPLY MEANS TO SAID SECOND SUPPLY MEANS, FIRST AND SECOND RECTIFIER MEANS COUPLING SAID FIRST AND SECOND SUPPLY
Claim 2
Dependent Claim
94 words
A POWER CONVERTER CIRCUIT COMPRISING FIRST AND SECOND ALTERNATING CURRENT SUPPLY MEANS, EACH OF SAID SUPPLY MEANS HAVING A LOW INTERNAL IMPEDANCE, THE MAXIMUM OUTPUT VOLTAGE OF SAID SECOND SUPPLY MEANS BEING SUBSTANTIALLY LESS THAN THE MAXIMUM OUTPUT VOLTAGE OF SAID FIRST SUPPLY MEANS, VOLTAGE CONTROL MEANS COUPLED TO SAID FIRST AND SECOND SUPPLY MEANS FOR VARYING THE OUTPUT VOLTAGES OF SAID SUPPLY MEANS IN OPPOSITE DIRECTIONS, FIRST AND SECOND OUTPUT TERMINALS, MEANS COUPLING SAID FIRST SUPPLY MEANS TO SAID SECOND SUPPLY MEANS, FIRST AND SECOND RECTIFIER MEANS COUPLING SAID FIRST AND SECOND SUPPLY
References Cited (Backward Citations)
US2995215A
Cited
US3019369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |