Patent US3196335A successfully refreshed from Google Patents.
US3196335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
D.c.-d.c. converter
Assignee: General Dynamics Corp
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Filing: 1960-06-06
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Granted: 1965-07-20
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Expires: 1980-06-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Don A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:08
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/337; H02M3/3376; H02M3/3378
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A CONSTANT CURRENT D.C.-D.C. CONVERTER COMPRISING A DIRECT VOLTAGE SOURCE, A PULSING CIRCUIT CONNECTED TO SAID DIRECT VOLTAGE SOURCE FOR PROVIDING VARIABLE WIDTH ALTERNATE POLARITY PULSES, SAID PULSING CIRCUIT INCLUDING A TRANSFORMER HAVING FIRST AND SECOND CONTROL WINDINGS AND AB OUTPUT WINDING, ELECTRONIC SWITCH MEANS HAVING OUTPUT ELECTRODES CONNECTED TO SAID FIRST CONTROL WINDING AND CONTROL ELECTRODES, PULSE POLARITY SWITCHING MEANS INCLUDING A PARALLEL RESISTOR CAPACITOR CIRCUIT CONNECTED TO EACH END OF SAID SECOND CONTROL WINDING AND TO SAID CONTROL ELECTRODES, A POWER AMPLIFIER CONNECTED TO SAID OUTPUT WINDING, A RECTIFIER CONNECTED TO SAID POWER AMPLIFIER, A LOAD, AN INDUCTANCE CONNECTED BETWEEN SAID RECTIFIER AND SAID LOAD, A LOAD CURRENT SENSING RESISTOR CONNECTED TO SAID RECTIFIER, AND PULSE WIDTH CONTRL MEANS INCLUDING A VOLTAGE RESPONSIVE TRIGGER CIRCUIT CONNECTED TO SAID SECOND CONTROL WINDING AND RESPONSIVE TO THE VOLTAGE DROP ACROSS SAID LOAD CURRENT SENSING RESISTOR FOR CONTROLLING SAID PULSING CIRCUIT.
Claim 2
Dependent Claim
150 words
A CONSTANT CURRENT D.C.-D.C. CONVERTER COMPRISING A DIRECT VOLTAGE SOURCE, A PULSING CIRCUIT CONNECTED TO SAID DIRECT VOLTAGE SOURCE FOR PROVIDING VARIABLE WIDTH ALTERNATE POLARITY PULSES, SAID PULSING CIRCUIT INCLUDING A TRANSFORMER HAVING FIRST AND SECOND CONTROL WINDINGS AND AB OUTPUT WINDING, ELECTRONIC SWITCH MEANS HAVING OUTPUT ELECTRODES CONNECTED TO SAID FIRST CONTROL WINDING AND CONTROL ELECTRODES, PULSE POLARITY SWITCHING MEANS INCLUDING A PARALLEL RESISTOR CAPACITOR CIRCUIT CONNECTED TO EACH END OF SAID SECOND CONTROL WINDING AND TO SAID CONTROL ELECTRODES, A POWER AMPLIFIER CONNECTED TO SAID OUTPUT WINDING, A RECTIFIER CONNECTED TO SAID POWER AMPLIFIER, A LOAD, AN INDUCTANCE CONNECTED BETWEEN SAID RECTIFIER AND SAID LOAD, A LOAD CURRENT SENSING RESISTOR CONNECTED TO SAID RECTIFIER, AND PULSE WIDTH CONTRL MEANS INCLUDING A VOLTAGE RESPONSIVE TRIGGER CIRCUIT CONNECTED TO SAID SECOND CONTROL WINDING AND RESPONSIVE TO THE VOLTAGE DROP ACROSS SAID LOAD CURRENT SENSING RESISTOR FOR CONTROLLING SAID PULSING CIRCUIT.
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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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |