Patent US3135910A successfully refreshed from Google Patents.
US3135910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant current rectifier power supply system
Assignee: AT&T Inc
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Filing: 1959-11-17
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Granted: 1964-06-02
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Expires: 1979-11-17
Abstract
No abstract record available.
Inventors
- 👤 Billy H Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:08
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
225 words
A CONSTANT CURRENT RECTIFIER POWER SUPPLY SYSTEM COMPRISING AN ALTERNATING-CURRENT SOURCE, A PLURALITY OF REGULATOR-RECTIFIERS, EACH OF SAID REGULATOR-RECTIFIERS COMPRISING A TRANSFORMER HAVING PRIMARY AND SECONDARY WINDINGS, A REFERENCE CURRENT SOURCE, A RECTIFIER BRIDGE HAVING AN INPUT AND AN OUTPUT, AND A SATURABLE REACTOR HAVING REFERENCE, MAIN AND CONTROL WINDINGS, MEANS FOR CONNECTING THE REFERENCE CURRENT SOURCE IN EACH OF SAID PLURALITY OF REGULATOR-RECTIFIERS TO ITS CORRESPONDING REFERENCE WINDINGS, MEANS FOR SERIALLY CONNECTING THE MAIN WINDINGS OF SAID SATURABLE REACTOR IN EACH OF SAID REGULATOR RECTIFIERS, THE CORRESPONDING PRIMARY WINDING OF SAID TRANSFORMER AND SAID ALTERNATING-CURRENT SOURCE, MEANS FOR CONNECTING THE SECONDARY WINDING OF SAID TRANSFORMER IN EACH OF SAID REGULATOR-RECTIFIERS TO THE INPUT OF ITS CORRESPONDING RECTIFIER BRIDGE, A PLURALITY OF ASYMMETRICALLY CONDUCTING DEVICES, MEANS FOR CONNECTING AN INDIVIDUAL ONE OF SAID ASYMMETRICALLY CONDUCTING DEVICES ACROSS THE OUTPUT TERMINALS OF EACH OF SAID RECTIFIER BRIDGES, A LOAD, MEANS FOR SERIALLY CONNECTING SAID ASYMMETRICALLY CONDUCTING DEVICES AND SAID LOAD, INDIVIDUAL DETECTING MEANS ASSOCIATED WITH EACH OF SAID REGULATOR-RECTIFIERS SAID DETECTING MEANS BEING RESPONSIVE TO LOAD VOLTAGE IN EXCESS OF A PREDETERMINED VALUE TO PROVIDE AN OUTPUT SIGNAL SUITABLE FOR SATURABLE REACTOR CONTROL, MEANS CONNECTING SAID DETECTING MEANS TO SAID SATURABLE REACTOR CONTROL WINDINGS TO TRANSMIT SAID OUTPUT SIGNAL THERETO AND THEREBY REDUCE THE CURRENT IN SAID MAIN SATURABLE REACTOR WINDINGS TO A RELATIVELY NEGLIGIBLE VALUE.
Claim 2
Dependent Claim
225 words
A CONSTANT CURRENT RECTIFIER POWER SUPPLY SYSTEM COMPRISING AN ALTERNATING-CURRENT SOURCE, A PLURALITY OF REGULATOR-RECTIFIERS, EACH OF SAID REGULATOR-RECTIFIERS COMPRISING A TRANSFORMER HAVING PRIMARY AND SECONDARY WINDINGS, A REFERENCE CURRENT SOURCE, A RECTIFIER BRIDGE HAVING AN INPUT AND AN OUTPUT, AND A SATURABLE REACTOR HAVING REFERENCE, MAIN AND CONTROL WINDINGS, MEANS FOR CONNECTING THE REFERENCE CURRENT SOURCE IN EACH OF SAID PLURALITY OF REGULATOR-RECTIFIERS TO ITS CORRESPONDING REFERENCE WINDINGS, MEANS FOR SERIALLY CONNECTING THE MAIN WINDINGS OF SAID SATURABLE REACTOR IN EACH OF SAID REGULATOR RECTIFIERS, THE CORRESPONDING PRIMARY WINDING OF SAID TRANSFORMER AND SAID ALTERNATING-CURRENT SOURCE, MEANS FOR CONNECTING THE SECONDARY WINDING OF SAID TRANSFORMER IN EACH OF SAID REGULATOR-RECTIFIERS TO THE INPUT OF ITS CORRESPONDING RECTIFIER BRIDGE, A PLURALITY OF ASYMMETRICALLY CONDUCTING DEVICES, MEANS FOR CONNECTING AN INDIVIDUAL ONE OF SAID ASYMMETRICALLY CONDUCTING DEVICES ACROSS THE OUTPUT TERMINALS OF EACH OF SAID RECTIFIER BRIDGES, A LOAD, MEANS FOR SERIALLY CONNECTING SAID ASYMMETRICALLY CONDUCTING DEVICES AND SAID LOAD, INDIVIDUAL DETECTING MEANS ASSOCIATED WITH EACH OF SAID REGULATOR-RECTIFIERS SAID DETECTING MEANS BEING RESPONSIVE TO LOAD VOLTAGE IN EXCESS OF A PREDETERMINED VALUE TO PROVIDE AN OUTPUT SIGNAL SUITABLE FOR SATURABLE REACTOR CONTROL, MEANS CONNECTING SAID DETECTING MEANS TO SAID SATURABLE REACTOR CONTROL WINDINGS TO TRANSMIT SAID OUTPUT SIGNAL THERETO AND THEREBY REDUCE THE CURRENT IN SAID MAIN SATURABLE REACTOR WINDINGS TO A RELATIVELY NEGLIGIBLE VALUE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |