Patent US7435253B1 successfully refreshed from Google Patents.
US3231761A
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US
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Precise timing circuit with linear charge network
Assignee: Siemens Schweiz AG
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Filing: 1963-02-11
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Granted: 1966-01-25
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Expires: 1983-02-11
Abstract
No abstract record available.
Inventors
- 👤 Keller Max
- 👤 Pacozzi Pierino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/52; G; G04; G04F; G04F10/00; G04F10/10; H03K17/00; H03K17/28; H03K3/00; H03K3/02; H03K3/023; H03K3/26; H03K3/28; H03K3/281; H03K3/284
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
ELECTRONIC TIMING CIRCUIT WITH VARIABLE SETTING TIME, USING A MONOSTABLE VIBRATOR, CHARACTERIZED IN THAT THE MONOSTABLE MULTIVIBRATOR IS COMPOSED OF TWO DIFFFERENT AMPLIFIER CIRCUITS, OF WHICH THE CIRCUIT CARRYING THE WORKING CURRENT CONSISTS OF A TRANSISTOR WHERE THE VARIABLE TIMEDETERMINING MEMBER IS ARRANGED BETWEN THE COLLECTOR AND EMITTER, THE POTENTIAL OF THE EMITTER BEING CONNECTED THROUGH A RESISTANCE WITH THE POSITIVE TERMINAL OF A VOLTAGE SOURCE, THE EMITTER POTENTIAL DURING THE NON-CONDUCTING STATE BEING DERIVED FROM A DIODE THROUGH A VOLTAGE DIVIDER CIRCUIT AND THAT THE AMPLIFIER CIRCUIT CARRYING THE FEED CURRENT IS A DIFFERENTIAL AMPLIFIER CIRCUIT CARRYING THE TRANSISTORS, WHOSE COMMON EMITTER POTENTIAL IS KEPT POSITIVE WITH REGARD TO GROUND BY THE AMOUNT OF THE BLOCKING VOLTAGE BY MEANS OF ANA ADDITIONAL VOLTAGE SOURCE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |