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USRE26630E Expired / Lapsed US ⏱️ 0.0 years remaining

Variable speed constant frequency system

Assignee: —
•
Filing: 1966-05-25
•
Granted: 1969-07-15
•
Expires: 1986-05-25
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Abstract

No abstract record available.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 02:39
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/27; H02M5/272

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 242 words
IN COMBINATION WITH A VARYING FREQUENCY POWER SOURCES HAVING A CHOSEN PLURALITY OF LIKE BALANCED PHASE OUTPUTS, SAID CHOSEN PLURALITY OF FREQUENCY CONVERSION MEANS, EACH OF SAID CONVERSION MEANS COMPRISING SAID CHOSEN PLURALITY OF FIRST AND SECOND SILICON CONTROLLED RECTIFIERS, EACH OF SAID SILICON CONTROLLED RECTIFIERS COMPRISING AN ANODE, A CATHODE AND A GATE ELECTRODE, THE ANODE OF EACH OF SAID FIRST SILICON CONTROLLED RECTIFIERS RESPECTIVELY BEING COUPLED AT ONE OF SAID POWER SOURCE OUTPUTS, THE CATHODE OF EACH OF SAID SECOND SILICON CONTROLLED RECTIFIERS RESPECTIVELY BEING CONNECTED TO ONE OF SAID POWER SOURCE OUTPUTS, A REFERENCE VOLTAGE SOURCE HAVING SAID CHOSEN PLURALITY OF BALANCED PHASE OUTPUTS, THE FREQUENCY OF SAID REFERENCE VOLTAGES BEING LESS THAN THE LOWEST FREQUENCY OF THE OUTPUTS FROM SAID POWER SOURCE, SAID CHOSEN PLURALITY OF MODULATING MEANS, EACH OF SAID MODULATING MEANS BEING IN CIRCUIT WITH THE OUTPUTS OF SAID POWER SOURCE AND ONE OF THE OUTPUTS OF SAID REFERENCE VOLTAGE SOURCE FOR MIXING SAID POWER SOURCE OUTPUTS WITH SAID REFERENCE VOLTAGE, MEANS FOR APPLYING THE RESPECTIVE OUTPUTS OF SAID MODULATING MEANS TO THE GATE ELECTRODES OF SAID SILICON COTROLLED RECTIFIERS COMPRISING CORRESPONDING ONES OF SAID FREQUENCY CONVERSION MEANS, SAID CHOSEN PLURALITY OF MEANS FOR RESPECTIVELY COMBINING THE OUTPUTS OF THE SILICON CONTROLLED RECTIFIERS INCLUDED IN EACH OF SAID FREQUENCY CONVERSION MEANS TO PROVIDE SAID CHOSEN PLURALITY OF BALANCED PHASE SYSTEM OUTPUTS, THE CATHODES OF SAID FIRST RECTIFIERS AND THE ANODES OF SAID SECOND RECTIFIERS BEING CONNECTED

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1972-07-14 1973-01-13 1973-07-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1976-07-14 1977-01-13 1977-07-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1980-07-14 1981-01-13 1981-07-15 $7700.00 Window Closed / Lapsed

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