Patent US2266874A successfully refreshed from Google Patents.
Patent US3210601A successfully refreshed from Google Patents.
US3210601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning circuit using controlled rectifiers
Assignee: Westinghouse Electric Corp
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Filing: 1962-12-03
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Granted: 1965-10-05
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Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Alec H B Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:08
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A CIRCUIT FOR GENERATING AN ALTERNATING CURRENT HAVING AT LEAST ONE WAVE-FORM PERIOD OF SAW-TOOTH WAVEFORM COMPRISING, A SOURCE OF DIRECT CURRENT, A COIL A RESONATING CAPACITOR OPERATIVELY CONNECTED TO SAID COIL, A SOLID STATE CONTROLLED RECTIFIER HAVING ANODE, CATHODE AND GATE ELECTRODES WITH ITS ANODE AND CATHODE ELECTRODES CONNECTED BETWEEN SAID COIL AND SAID SOURCE, A DIODE CONNECTED IN REVERSE POLARITY TO SAID RECTIFIER TO PASS CURRENT TO SAID COIL IN AN OPPOSITE DIRECTION TO THAT PASSED BY SAID RECTIFIER, AND SERIES RESONANT MEANS OPERATIVELY CONNECTED TO SAID RECTIFIER TO ENABLE SAID RECTIFIER TO CEASE CONDUCTING AT LEAST ONCE DURING GENERATION OF EACH CYCLE OF ALTERNATING CURRENT IN SAID COIL.
Claim 2
Dependent Claim
111 words
A CIRCUIT FOR GENERATING AN ALTERNATING CURRENT HAVING AT LEAST ONE WAVE-FORM PERIOD OF SAW-TOOTH WAVEFORM COMPRISING, A SOURCE OF DIRECT CURRENT, A COIL A RESONATING CAPACITOR OPERATIVELY CONNECTED TO SAID COIL, A SOLID STATE CONTROLLED RECTIFIER HAVING ANODE, CATHODE AND GATE ELECTRODES WITH ITS ANODE AND CATHODE ELECTRODES CONNECTED BETWEEN SAID COIL AND SAID SOURCE, A DIODE CONNECTED IN REVERSE POLARITY TO SAID RECTIFIER TO PASS CURRENT TO SAID COIL IN AN OPPOSITE DIRECTION TO THAT PASSED BY SAID RECTIFIER, AND SERIES RESONANT MEANS OPERATIVELY CONNECTED TO SAID RECTIFIER TO ENABLE SAID RECTIFIER TO CEASE CONDUCTING AT LEAST ONCE DURING GENERATION OF EACH CYCLE OF ALTERNATING CURRENT IN SAID COIL.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |