US3453453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-shot circuit with short retrigger time
Assignee: United States Department of the Navy
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Filing: 1966-07-12
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Granted: 1969-07-01
•
Expires: 1986-07-12
Abstract
No abstract record available.
Inventors
- 👤 Richard Smith Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:12
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A ONE-SHOT CIRCUIT WHICH COMPRISES: (A) A CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION; (B) A FIRST EXTERNAL TRANSISTOR COUPLED TO A SUPPLY VOLTAGE AND TO THE TRANSISTOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION, THAT IS SATURATED IN THE NORMAL STATE, FOR SUPPLYING BASEBIAS CURRENT TO SAID SATURATED TRANSISTOR IN THE NORMAL STATE, AND TO SERVE AS A CONSTANT CURRENT SOURCE FOR THE CAPACITOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION; (C) A SECOND EXTERNAL TRANSISTOR COUPLED TO THE SUPPLY VOLTAGE AND TO ONE OF THE TERMINALS OF THE CAPACITOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION FOR CHARGING SAID CAPACITOR IN THE NORMAL STATE; AND (D) A THIRD EXTERNAL TRANSISTOR COUPLED TO A CONTROL VOLTAGE AND TO THE OTHER TERMINAL OF THE CAPACITOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION FOR CHARGING SAID CAPACITOR AFTER IT HAS BEEN DISCHARGED BY TRIGGER ACTION.
Claim 2
Dependent Claim
142 words
A ONE-SHOT CIRCUIT WHICH COMPRISES: (A) A CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION; (B) A FIRST EXTERNAL TRANSISTOR COUPLED TO A SUPPLY VOLTAGE AND TO THE TRANSISTOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION, THAT IS SATURATED IN THE NORMAL STATE, FOR SUPPLYING BASEBIAS CURRENT TO SAID SATURATED TRANSISTOR IN THE NORMAL STATE, AND TO SERVE AS A CONSTANT CURRENT SOURCE FOR THE CAPACITOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION; (C) A SECOND EXTERNAL TRANSISTOR COUPLED TO THE SUPPLY VOLTAGE AND TO ONE OF THE TERMINALS OF THE CAPACITOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION FOR CHARGING SAID CAPACITOR IN THE NORMAL STATE; AND (D) A THIRD EXTERNAL TRANSISTOR COUPLED TO A CONTROL VOLTAGE AND TO THE OTHER TERMINAL OF THE CAPACITOR OF SAID CONVENTIONAL MONOSTABLE MULTIVIBRATOR CIRCUIT CONFIGURATION FOR CHARGING SAID CAPACITOR AFTER IT HAS BEEN DISCHARGED BY TRIGGER ACTION.
References Cited (Backward Citations)
US2976432A
Cited
US3201602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |