Patent US3107320A successfully refreshed from Google Patents.
US3107320A
Expired / Lapsed
US
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Two stage timing circuit
Assignee: Aerojet Rocketdyne Inc
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Filing: 1961-08-14
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Granted: 1963-10-15
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Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Edward G Brittain
- 👤 William A Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:05
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K17/00; H03K17/28; H03K17/292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A DEVICE OF THE CLASS DESCRIBED COMPRISING IN COMBINATION A FIRST UNIJUNCTION TRANSISTOR, MEANS FOR ESTABLISHING A REFERENCE POTENTIAL AT THE BASE-2 TERMINAL OF THE FIRST UNIJUNCTION TRANSISTOR, A FIRST ACCUMULATOR HAVING A RESPONSE WHICH INCREASES GENERALLY WITH AN INCREASING INPUT, SAID ACCUMULATOR ASSOCIATED WITH THE EMITTER TERMINAL OF SAID FIRST UNIJUNCTION TRANSISTOR, MEANS CONNECTED TO SAID ACCUMULATOR FOR CAUSING AN INCREASING RESPONSE THEREIN WHEREBY THE ASSOCIATION OF SAID FIRST UNIJUNCTION TRANSISTOR AND SAID FIRST ACCUMULATOR CAUSES THE FIRST UNIJUNCTION TRANSISTOR TO BECOME CONDUCTIVE WHEN THE RESPONSE OF SAID FIRST ACCUMULATOR INCREASES TO A PREDETERMINED LEVEL, A SECOND UNIJUNCTION TRANSISTOR, MEANS FOR ESTABLISHING A REFERENCE POTENTIAL AT THE BASE-2 TERMINAL OF THE SECOND UNIJUNCTION TRANSISTOR, A SECOND ACCUMULATOR HAVING A RESPONSE WHICH INCREASES GENRALLY WITH AN INCREASING INPUT, SAID SECOND ACCUMULATOR ASSOCIATED WITH THE EMITTER TERMINAL OF SAID SECOND UNIJUNCTION TRANSISTOR, COMBINED MEAN OPERATING WHEN SAID FIRST UNIJUNCTION TRANSISTOR BECOMES CONDUCTIVE BOTH FOR DECREASING THE RESPONSE OF SAID FIRST ACCUMULATOR UNTIL SAID FIRST UNIJUNCTION TRANSISTOR BECOMES NONCONDUCTIVE, AND FOR TRANS-
Claim 2
Independent Claim
170 words
A DEVICE OF THE CLASS DESCRIBED COMPRISING IN COMBINATION A FIRST UNIJUNCTION TRANSISTOR, MEANS FOR ESTABLISHING A REFERENCE POTENTIAL AT THE BASE-2 TERMINAL OF THE FIRST UNIJUNCTION TRANSISTOR, A FIRST ACCUMULATOR HAVING A RESPONSE WHICH INCREASES GENERALLY WITH AN INCREASING INPUT, SAID ACCUMULATOR ASSOCIATED WITH THE EMITTER TERMINAL OF SAID FIRST UNIJUNCTION TRANSISTOR, MEANS CONNECTED TO SAID ACCUMULATOR FOR CAUSING AN INCREASING RESPONSE THEREIN WHEREBY THE ASSOCIATION OF SAID FIRST UNIJUNCTION TRANSISTOR AND SAID FIRST ACCUMULATOR CAUSES THE FIRST UNIJUNCTION TRANSISTOR TO BECOME CONDUCTIVE WHEN THE RESPONSE OF SAID FIRST ACCUMULATOR INCREASES TO A PREDETERMINED LEVEL, A SECOND UNIJUNCTION TRANSISTOR, MEANS FOR ESTABLISHING A REFERENCE POTENTIAL AT THE BASE-2 TERMINAL OF THE SECOND UNIJUNCTION TRANSISTOR, A SECOND ACCUMULATOR HAVING A RESPONSE WHICH INCREASES GENRALLY WITH AN INCREASING INPUT, SAID SECOND ACCUMULATOR ASSOCIATED WITH THE EMITTER TERMINAL OF SAID SECOND UNIJUNCTION TRANSISTOR, COMBINED MEAN OPERATING WHEN SAID FIRST UNIJUNCTION TRANSISTOR BECOMES CONDUCTIVE BOTH FOR DECREASING THE RESPONSE OF SAID FIRST ACCUMULATOR UNTIL SAID FIRST UNIJUNCTION TRANSISTOR BECOMES NONCONDUCTIVE, AND FOR TRANS-
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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |