US3229161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignitron excitation control circuit
Assignee: Schneider Electric USA Inc
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Filing: 1963-03-25
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Granted: 1966-01-11
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Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Anger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:36
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248; B23K11/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
IN COMBINATION WITH A SOURCE OF ALTERNATING CURRENT HAVING A PAIR OF TERMINALS, A FIRST IGNITRON HAVING AN ANODE, A CATHODE AND AN IGNITION ELECTRODE, A SECOND IGNITRON HAVING AN ANODE, A CATHODE AND AN IGNITRON AND THE MEANS CONNECTING THE ANODE OF THE FIRST IGNITRON AND THE CATHODE OF THE SECOND IGNITRON TO ONE TERMINAL OF THE SOURCE, MEANS CONNECTING THE CATHODE OF THE FIRST IGNITRON AND THE ANODE OF THE SECOND IGNITRON TO THE OTHER TERMINAL OF THE SOURCE, AN AUTOTRANSFORMER HAVING A WINDING INTERCONNECTING THE ANODES OF BOTH IGNITRONS, SAID TRANSFORMER HAVING AT LEAST ONE TAP DIVIDING SAID WINDING INTO TWO PORTIONS, A FIRST UNIDIRECTIONAL CONDUCTING DEVICE HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE, A SECOND UNIDIRECTIONAL CONDUCTING DEVICE HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE, MEANS CONNECTING IN SERIES ACROSS ONE OF SAID WINDING PORTIONS THE ANODE AND THE CATHODE OF THE FIRST DEVICE AND THE IGNITION ELECTRODE AND THE CATHODE OF THE FIRST IGNITRON, MEANS CONNECTING IN SERIES ACROSS THE OTHER OF SAID WINDING PORTIONS THE ANODE AND THE CATHODE OF THE SECOND DEVICE AND THE IGNITION ELECTRODE AND THE CATHODE OF THE SECOND IGNITRON, AND CIRCUIT MEANS CONNECTED BETWEEN THE CONTROL ELECTRODES AND THE CATHODES OF EACH OF SAID DEVICES FOR INITIATING CONDUCTION OF SAID DEVICES.
Claim 2
Dependent Claim
216 words
IN COMBINATION WITH A SOURCE OF ALTERNATING CURRENT HAVING A PAIR OF TERMINALS, A FIRST IGNITRON HAVING AN ANODE, A CATHODE AND AN IGNITION ELECTRODE, A SECOND IGNITRON HAVING AN ANODE, A CATHODE AND AN IGNITRON AND THE MEANS CONNECTING THE ANODE OF THE FIRST IGNITRON AND THE CATHODE OF THE SECOND IGNITRON TO ONE TERMINAL OF THE SOURCE, MEANS CONNECTING THE CATHODE OF THE FIRST IGNITRON AND THE ANODE OF THE SECOND IGNITRON TO THE OTHER TERMINAL OF THE SOURCE, AN AUTOTRANSFORMER HAVING A WINDING INTERCONNECTING THE ANODES OF BOTH IGNITRONS, SAID TRANSFORMER HAVING AT LEAST ONE TAP DIVIDING SAID WINDING INTO TWO PORTIONS, A FIRST UNIDIRECTIONAL CONDUCTING DEVICE HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE, A SECOND UNIDIRECTIONAL CONDUCTING DEVICE HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE, MEANS CONNECTING IN SERIES ACROSS ONE OF SAID WINDING PORTIONS THE ANODE AND THE CATHODE OF THE FIRST DEVICE AND THE IGNITION ELECTRODE AND THE CATHODE OF THE FIRST IGNITRON, MEANS CONNECTING IN SERIES ACROSS THE OTHER OF SAID WINDING PORTIONS THE ANODE AND THE CATHODE OF THE SECOND DEVICE AND THE IGNITION ELECTRODE AND THE CATHODE OF THE SECOND IGNITRON, AND CIRCUIT MEANS CONNECTED BETWEEN THE CONTROL ELECTRODES AND THE CATHODES OF EACH OF SAID DEVICES FOR INITIATING CONDUCTION OF SAID DEVICES.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |