Patent US3248640A successfully refreshed from Google Patents.
US3248640A
Expired / Lapsed
US
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Synchronizing circuit
Assignee: General Electric Co
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Filing: 1962-01-23
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Granted: 1966-04-26
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Armistead L Wellford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:43
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/352; H03K3/26; H03K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A SWITCHING CIRCUIT HAVING A PLURALITY OF CURRENT CONTROL DEVICES EACH HAVING CONTROL, EMITTING, AND COLLECTING ELECTRODES AND HAVING A FIRST TRANSFORMER DEVICE TO EFFECT ALTERNATE CONDUCTION OF SAID CURRENT CONTROL DEVICES, A SYNCHRONIZING CIRCUIT COMPRISING A RECTIFIER DEVICE RESPECTIVELY COUPLED TO EACH OF SAID CONTROL ELECTRODES IN A MANNER SUCH THAT CURRENT FLOW BETWEEN SAID RECTIFIER DEVICE TENDS TO PREVENT CURRENT FLOW BETWEEN SAID EMITTING AND COLLECTING ELECTRODES, A SOURCE OF ALTERNATING CURRENT SYNCHRONIZING SIGNALS, A TIMING DEVICE, AND MEANS COUPLING SAID SYNCHRONIZING SIGNAL SOURCE AND SAID TIMING DEVICE IN A CIRCUIT BETWEEN SAID CONTROL ELECTRODES FOR SELECTIVELY RENDERING SAID CURRENT CONTROL DEVICES CONDUCTIVE IN RESPONSE TO SAID SYNCHRONIZING SIGNAL AND SAID TIMING DEVICE.
Claim 2
Dependent Claim
116 words
IN A SWITCHING CIRCUIT HAVING A PLURALITY OF CURRENT CONTROL DEVICES EACH HAVING CONTROL, EMITTING, AND COLLECTING ELECTRODES AND HAVING A FIRST TRANSFORMER DEVICE TO EFFECT ALTERNATE CONDUCTION OF SAID CURRENT CONTROL DEVICES, A SYNCHRONIZING CIRCUIT COMPRISING A RECTIFIER DEVICE RESPECTIVELY COUPLED TO EACH OF SAID CONTROL ELECTRODES IN A MANNER SUCH THAT CURRENT FLOW BETWEEN SAID RECTIFIER DEVICE TENDS TO PREVENT CURRENT FLOW BETWEEN SAID EMITTING AND COLLECTING ELECTRODES, A SOURCE OF ALTERNATING CURRENT SYNCHRONIZING SIGNALS, A TIMING DEVICE, AND MEANS COUPLING SAID SYNCHRONIZING SIGNAL SOURCE AND SAID TIMING DEVICE IN A CIRCUIT BETWEEN SAID CONTROL ELECTRODES FOR SELECTIVELY RENDERING SAID CURRENT CONTROL DEVICES CONDUCTIVE IN RESPONSE TO SAID SYNCHRONIZING SIGNAL AND SAID TIMING DEVICE.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |