US3121198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A.c. signal polarizing circuit
Assignee: F V TOPPING ELECTRONICS Ltd
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Filing: 1960-08-24
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Granted: 1964-02-11
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Expires: 1980-08-24
Abstract
No abstract record available.
Inventors
- 👤 David W Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:06
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3052; H03G3/3057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A DEVICE FOR TRANSPOSING AN A.C. SIGNAL HAVING BOTH POLARITIES RELATIVE TO A D.C. LINE INTO A SIGNAL HAVING ONLY ONE POLARITY RELATIVE TO A D.C. LINE, COMPRISING: FIRST AND SECOND LINES FOR RECEIVING A SIGNAL, SAID FIRST LINE HAVING AN OUTPUT TERMINAL AND BEING CONNECTED TO SUCH D.C. LINE THROUGH A RECTIFIER, MEANS FOR MAINTAINING SAID D.C. LINE AT A PREDETERMINED VOLTAGE WITH RESPECT TO GROUND INDEPENDENTLY OF THE SIGNAL ON SAID FIRST AND SECOND LINES, A RESISTOR CONNECTING SAID D.C. LINE AND SAID SECOND LINE, A CAPACITOR CONNECTING SAID SECOND LINE TO GROUND, THE TIME CONSTANT OF SAID RESISTOR AND SAID CAPACITOR BEING LONGER THAN THE PERIOD OF SIGNALS TO BE HANDLED BY SAID FIRST AND SECOND LINES.
Claim 2
Independent Claim
120 words
A DEVICE FOR TRANSPOSING AN A.C. SIGNAL HAVING BOTH POLARITIES RELATIVE TO A D.C. LINE INTO A SIGNAL HAVING ONLY ONE POLARITY RELATIVE TO A D.C. LINE, COMPRISING: FIRST AND SECOND LINES FOR RECEIVING A SIGNAL, SAID FIRST LINE HAVING AN OUTPUT TERMINAL AND BEING CONNECTED TO SUCH D.C. LINE THROUGH A RECTIFIER, MEANS FOR MAINTAINING SAID D.C. LINE AT A PREDETERMINED VOLTAGE WITH RESPECT TO GROUND INDEPENDENTLY OF THE SIGNAL ON SAID FIRST AND SECOND LINES, A RESISTOR CONNECTING SAID D.C. LINE AND SAID SECOND LINE, A CAPACITOR CONNECTING SAID SECOND LINE TO GROUND, THE TIME CONSTANT OF SAID RESISTOR AND SAID CAPACITOR BEING LONGER THAN THE PERIOD OF SIGNALS TO BE HANDLED BY SAID FIRST AND SECOND LINES.
References Cited (Backward Citations)
GB413383A
Cited
US2912654A
Cited
US2937341A
Cited
US2929926A
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US2895045A
Cited
US2967236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |