US3219844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse generating control system including transistor and regenerative feedback
Assignee: AMF Inc
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Filing: 1962-11-01
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Granted: 1965-11-23
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Expires: 1982-11-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:35
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN A PULSE GENERATING CIRCUIT, THE COMBINATION OF A TRANSISTOR, TRIGGER CIRCUIT MEANS CONNECTED TO SAID TRANSISTOR TO INITIATE CONDUCTION THEREIN; A TRANSFORMER HAVING A PLURALITY OF COUPLED WINDINGS INCLUDING; A FEEDBACK WINDING INTERCONNECTED WITH SAID TRANSISTOR SO AS TO PROVIDE REGENERATIVE FEEDBACK AND MAINTAIN SAID TRANSISTOR IN THE CONDUCTIVE STATE ONCE CONDUCTION HAS BEEN INITIATED; SWITCHING MEANS CONNECTED ACROSS A SECOND WINDING OF SAID TRANSFORMER AND RESPONSIVE TO A TURN-OFF INPUT PULSE TO EFFECTIVELY SHORT-CIRCUIT SAID SECOND WINDING TO IN TURN REDUCE THE REGENERATIVE FEEDBACK CURRENTS GENERATED IN THE FEEDBACK WINDING; AND MEANS FOR PREVENTING THE GENERATED CURRENTS OF REDUCED VALUE FROM REACHING SAID TRANSISTOR AND THUS TERMINATING CONDUCTION IN SAID TRANSISTOR.
Claim 2
Dependent Claim
113 words
IN A PULSE GENERATING CIRCUIT, THE COMBINATION OF A TRANSISTOR, TRIGGER CIRCUIT MEANS CONNECTED TO SAID TRANSISTOR TO INITIATE CONDUCTION THEREIN; A TRANSFORMER HAVING A PLURALITY OF COUPLED WINDINGS INCLUDING; A FEEDBACK WINDING INTERCONNECTED WITH SAID TRANSISTOR SO AS TO PROVIDE REGENERATIVE FEEDBACK AND MAINTAIN SAID TRANSISTOR IN THE CONDUCTIVE STATE ONCE CONDUCTION HAS BEEN INITIATED; SWITCHING MEANS CONNECTED ACROSS A SECOND WINDING OF SAID TRANSFORMER AND RESPONSIVE TO A TURN-OFF INPUT PULSE TO EFFECTIVELY SHORT-CIRCUIT SAID SECOND WINDING TO IN TURN REDUCE THE REGENERATIVE FEEDBACK CURRENTS GENERATED IN THE FEEDBACK WINDING; AND MEANS FOR PREVENTING THE GENERATED CURRENTS OF REDUCED VALUE FROM REACHING SAID TRANSISTOR AND THUS TERMINATING CONDUCTION IN SAID TRANSISTOR.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |