Patent US3213293A successfully refreshed from Google Patents.
US3213293A
Expired / Lapsed
US
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Stable-limited input circuit for a bi-stable comparator
Assignee: Individual
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Filing: 1961-07-06
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Granted: 1965-10-19
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Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 Francis P Finlon
- 👤 Jr Ralph M Seeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:36
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/24; H03K5/2409
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A VOLTAGE COMPARATOR CIRCUIT CONSISTING OF, IN COMBINATION: A FIRST AND A SECOND ASYMMETRICAL CONDUCTING DEVICE HAVING LIKE ELECTRODE TERMINAS CONNECTED AT A COMMON JUNCTION SOURCE OF CONSTANT CURRENT; A SOURCE OF SIGNAL VOLTAGE CONNECTED TO THE UNLIKE ELECTRODE TERMINAL OF THE FIRST OF SAID DEVICES; A SENSING AMPLIFIER CONNECTED TO THE UNLIKE TERMINAL OF THE SECOND OF SAID DEVICES SAID SENSING AMPLIFIER HAVING A D.C. REFERENCE VOLTAGE SOURCE COUPLED TO THE CONTROL TERMINAL THEREOF; A BI-STABLE CIRCUIT CONNECTED TO SAID SENSING AMPLIFIER ADAPTED TO GIVE ONE OUTPUT INDICATION WHEN SAID SOURCE OF SIGNAL VOLTAGE GOES BELOW SAID REFERENCE VOLTAGE AND ANOTHER WHEN SAID SOURCE OF SIGNAL VOLTAGE RISES ABOVE SAID REFERENCE VOLTAGE.
Claim 2
Dependent Claim
113 words
A VOLTAGE COMPARATOR CIRCUIT CONSISTING OF, IN COMBINATION: A FIRST AND A SECOND ASYMMETRICAL CONDUCTING DEVICE HAVING LIKE ELECTRODE TERMINAS CONNECTED AT A COMMON JUNCTION SOURCE OF CONSTANT CURRENT; A SOURCE OF SIGNAL VOLTAGE CONNECTED TO THE UNLIKE ELECTRODE TERMINAL OF THE FIRST OF SAID DEVICES; A SENSING AMPLIFIER CONNECTED TO THE UNLIKE TERMINAL OF THE SECOND OF SAID DEVICES SAID SENSING AMPLIFIER HAVING A D.C. REFERENCE VOLTAGE SOURCE COUPLED TO THE CONTROL TERMINAL THEREOF; A BI-STABLE CIRCUIT CONNECTED TO SAID SENSING AMPLIFIER ADAPTED TO GIVE ONE OUTPUT INDICATION WHEN SAID SOURCE OF SIGNAL VOLTAGE GOES BELOW SAID REFERENCE VOLTAGE AND ANOTHER WHEN SAID SOURCE OF SIGNAL VOLTAGE RISES ABOVE SAID REFERENCE VOLTAGE.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |