Patent US3214644A successfully refreshed from Google Patents.
US3214644A
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Trigger circuit
Assignee: Bunker Ramo Corp
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Filing: 1962-09-24
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Granted: 1965-10-26
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Oakley H Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/2893; H03K17/00; H03K17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A TRIGGER CIRCUIT HAVING AN EFFECTIVE ELECTRICAL TIME CONSTANT, A PAIR OF TRANSISTORS WITH ONE OF SAID TRANSISTORS BEING NORMALLY CONDUCTIVE AND THE OTHER NORMALLY NONCONDUCTIVE IN THE ABSENCE OF AN INPUT CIRCUIT OF ONE ACTUATABLE MEANS CONNECTED IN AN OUTPUT CIRCUIT OF ONE OF SAID TRANSISTORS, SAID ACTUATABLE MEANS HAVING A FINITE COMBINED MECHANICAL AND ELECTRICAL TIME CONSTANT, AND MEANS FOR APPLYING SAID INPUT SIGNAL TO ONE OF SAID TRANSISTORS FOR CAUSING SAID NORMALLY CONDUCTIVE TRANSISTOR TO BECOME NON-CONDUCTIVE ONLY FOR THE DURATION OF SAID INPUT SIGNAL, THE IMPROVEMENT COMPRISING A REGENERATIVE CIRCUIT CONNECTED BETWEEN SAID TWO TRANSISTORS AND HAVING A TIME CONSTANT VALUE TO CAUSE SAID EFFECTIVE ELECTRICAL TIME CONSTANT OF SAID TRIGGER CIRCUIT TO BE SUBSTANTIALLY SHORTER THAN SAID TIME CONSTANT OF SAID ACTUATABLE MEANS.
Claim 2
Dependent Claim
129 words
IN A TRIGGER CIRCUIT HAVING AN EFFECTIVE ELECTRICAL TIME CONSTANT, A PAIR OF TRANSISTORS WITH ONE OF SAID TRANSISTORS BEING NORMALLY CONDUCTIVE AND THE OTHER NORMALLY NONCONDUCTIVE IN THE ABSENCE OF AN INPUT CIRCUIT OF ONE ACTUATABLE MEANS CONNECTED IN AN OUTPUT CIRCUIT OF ONE OF SAID TRANSISTORS, SAID ACTUATABLE MEANS HAVING A FINITE COMBINED MECHANICAL AND ELECTRICAL TIME CONSTANT, AND MEANS FOR APPLYING SAID INPUT SIGNAL TO ONE OF SAID TRANSISTORS FOR CAUSING SAID NORMALLY CONDUCTIVE TRANSISTOR TO BECOME NON-CONDUCTIVE ONLY FOR THE DURATION OF SAID INPUT SIGNAL, THE IMPROVEMENT COMPRISING A REGENERATIVE CIRCUIT CONNECTED BETWEEN SAID TWO TRANSISTORS AND HAVING A TIME CONSTANT VALUE TO CAUSE SAID EFFECTIVE ELECTRICAL TIME CONSTANT OF SAID TRIGGER CIRCUIT TO BE SUBSTANTIALLY SHORTER THAN SAID TIME CONSTANT OF SAID ACTUATABLE MEANS.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |