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US3273044A Expired / Lapsed US ⏱️ 0.0 years remaining

Transformer replacement system

Assignee: AT&T Inc
•
Filing: 1962-12-19
•
Granted: 1966-09-13
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Expires: 1982-12-19
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Abstract

No abstract record available.

Inventors

  • 👤 Patrick W Clarke

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 19:21
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/125; H02M3/135; H02M3/137; H02M5/00

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 622 words
A TRANSFORMERLESS RECTIFIER REGULATING SYSTEM HAVING FIRST AND SECOND TERMINALS, FIRST, SECOND, THIRD, FOURTH, FIFTH AND SIXTH CONTROLLED RECTIFIERS, EACH HAVING ANODE, CATHODE, AND GATE ELECTRODES, FIRST SECOND, THIRD, FOURTH FIFTH, SIXTH, SEVENTH, EIGHTH, NINTH, TENTH, ELEVENTH, AND TWELFTH ENERGY STORAGE MEANS FIRST, SECOND, THIRD, FOURTH, FIFTH, SIXTH, SEVENTH, EIGHTH, NINTH, AND TENTH ASYMMETRICALLY CONDUCTING DEVICES, A SOURCE OF ALTERNATING CURRENT HAVING FIRST, SECOND, AND THIRD PHASES, A LOAD, MEANS FOR SERIALLY CONNECTING SAID FIRST AND SECOND ASYMMETRICALLY CONDUCTING DEVICES BETWEEN SAID FIRST AND SECOND INPUT TERMINALS, MEANS FOR SERIALLY CONNECTING SAID THIRD AND FOURTH ASYMMETRICALLY CONDUCTING DEVICES BETWEEN SAID FIRST AND SECOND INPUT TERMINALS, MEANS FOR SERIALLY CONNECTING SAID FIFTH AND SIXTH ASYMMETRICALLY CONDUCTING DEVICES BETWEEN SAID FIRST AND SECOND INPUT TERMINALS, MEANS FOR CONNECTING SAID FIRST PHASE OF SAID SOURCE OF ALTERNATING CURRENT TO SAI FIRST AND SECON ASYMMETRICALLY CONDUCTING DEVICES, MEANS FOR CONNECTING SAID SECOND PHASE OF SAID SOURCE OF ALTERNATING CURRENT TO SAID THIRD AND FOURTH ASYMMETRICALLY CONDUCTING DEVICES, MEANS FOR CONNECTING SAID THIRD PHASE OF SAID SOURCE OF ALTERNATING CURRENT TO SAID FIFTH ANDSIXTH ASYMMETRICALLY CONDUCTING DEVICE, MEANS FOR SERIALLY CONNECTING SAID FIRST INPUT TERMINAL, SAID FIRST ENERGY STORAGE,MEAND AND SECON ENERGY STORAGE MEANS, SAID THIRD ENERGY STORAGE MEANS, AND SAID SECOND INPUT TERMINAL, MEANS FOR SERIALLY CONNECTING SAID FIRST INPUT TERMINAL, SAID FIRST ENERGY STORAGE MEANS, THE ANODE-CATHODE ELECTRODES OF SAID FIRST CONTROLLED RECTIFIER, SAID FOURTH ENERGY STORAGE MEANS, THE ANODE-CATHODE ELECTRODES OF SAID SECOND CONTROLLED RECTIFIER, SAID FIFTH ENERGY STORAGE MEANS, SAID LOAD, THE ANODE-CATHODE ELECTRODES OF SAID THIRD CONTROLLED RECTIFIER, SAID SIXTH ENERGY STORAGE MEANS, THE ANODE-CATHODE ELECTRODES OF SAID FOURTH CONTROLLED RECRIFIER, SAID THIRD STORAGE MEANS AND SAID SECOND INPUT TERMINAL, MEANS FOR SERIALLY CONNECTING THE CATHODE ELECTRODE OF SAID FIRST CONTROLLED RECTIFIER, SAID SEVENTH ASYMMETRICALLY CONDUCTING DEVICE, SAID SEVENTH ENERGY STORAGE MEANS, SAID EIGHTH ENERGY STORAGE MEANS, AND THE ANODE ELECTRODE OF SAID FOURTH CONTROLLED RECTIFIER, MEANS FOR CONNECTING THE ANODE ELECTRODE OF SAID FIFTH CONTROLLED RECTIFIER TO SAID SEVENTH AND EIGHTH ENERGY STORAGE MEANS, MEANS FOR CONNECTING THE CATHODE ELECTRODE OF SAID FIFTH CONTROLLED RECTIFIER TO THE CATHODE ELECTRODE OF SAID FIRST CONTROLLED RECTIFIER, MEANS FOR CONNECTING SAID EIGHTH ASYMMETRICALLY CONDUCTING DEVICE BETWEEN THE ANODE ELECTRODE OF SAID FOURTH CONTROLLED RECTIFIER AND THE CATHODE ELECTRODE OF SAID FIRST CONTROLLED RECTIFIER, MEANS FOR CONNECTING SAID NINTH ENERGY STORAGE MEANS BETWEEN THE CATHODE ELECTRODE OF SAID THIRD CONTROLLED RECTIFIER AND THE ANODE ELECTRODE OF SAID SECOND CONTROLLED RECTIFIER, MEANS FOR SERIALLY CONNECTING THE CATHODE ELECTRODE OF SAID SECOND CONTROLLED RECTIFIER, SAID NINTH ASYMMETRICALLY CONDUCTING DEVICE, SAID TENTH ENERGY STORAGE MEANS, SAID ELEVENTH, ENERGY STORAGE MEANS AND THE ANODE ELECTRODE OF SAID THIRD CONTROLLED RECTIFIER, MEANS FOR CONNECTING THE ANODE ELECTRODE OF SAID SIXTH CONTROLLED RECTIFIER TO SAID TENTH AND ELEVENTH ENERGY STORAGE MEANS, MEANS FOR CONNECTING THE CATHODE ELECTRODE OF SAID SIXTH CONTROLLED RECTIFIER TO THE CATHODE ELECTRODE OF SAID SECOND CONTROLLED RECTIFIER, MEANS FOR CONNECTING SAID TENTH ASYMMETRICALLY CONDUCTING DEVICE BETWEEN THE ANODE ELECTRODE OF SAID THIRD CONTROLLED RECTIFIER AND THE CATHODE ELECTRODE OF SAID SECOND CONTROLLED RECTIFIER, MEANS FOR CONNECTING SAID TWELFTH ENERGY STORAGE MEANS ACROSS SAID LOAD, GATING MEANS CONNECTED TO THE GATE ELECTRODES OF EACH OF SAID FIRST, SECOND, THIRD, AND FOURTH CONTROLLED RECTIFIERS TO INITIATE THE CONDUCTIVE CONDITION OF SAID CONTROLLED RECTIFIERS AT FIXED EQUAL INTERVALS, SAID FIRST AND FOURTH CONTROLLED RECTIFIERS BEING CONDUCTIVE AT INTERVALS ALTERNATE TO THE INTERVALS THAT SAID SECOND AND THIRD CONTROLLED RECTIFIERS ARE CONDUCTIVE, MEANS RESPONSIVE TO LOAD VOLTAGE VARIATIONS CONNECTED TO THE GATE ELECTRODES OF SAID FIFTH AND SIXTH CONTROLLED RECTIFIERS TO CONTROL THE CONDUCTIVITY OF SAID FIFTH AND SIXTH CONTROLLED RECTIFIERS TO EXTINGUISH THE CONDUCTIVITY OF SAID FIRST AND FOURTH AND SECOND AND THIRD CONTROLLED RECTIFIERS, RESPECTIVELY, TO OBTAIN VOLTAGE REGULATION.

References Cited (Backward Citations)

US2810105A Cited
US3040239A Cited
US3015739A Cited
US3147419A Cited
US3192468A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-09-12 1970-03-14 1970-09-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-09-12 1974-03-14 1974-09-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-09-12 1978-03-14 1978-09-13 $7700.00 Window Closed / Lapsed

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