Patent US3412389A successfully refreshed from Google Patents.
US3412389A
Expired / Lapsed
US
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Comparator arrangement
Assignee: Textron Systems Corp
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Filing: 1966-12-08
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Granted: 1968-11-19
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Expires: 1986-12-08
Abstract
No abstract record available.
Inventors
- 👤 Carroll M Barrack
- 👤 Wilbur A Visher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:17
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
THRESHOLD RATIO COMPARATOR APPARATUS FOR COMPARING AND INDICATING THE RELATIONSHIP BETWEEN A PAIR OF APPLIED SIGNALS WHICH DIFFER IN AMPLITUDE, COMPRISING: A COMPUTER DEVICE HAVING EITHER POSITIVE OR NEGATIVE OUTPUT AS A FUNCTION OF THE RATIO OF TWO SIGNAL INPUTS THERETO BEING ABOVE OR BELOW A SELECTED THESHOLD RATIO VALUE; SAID COMPUTER DEVICE COMPRISING: FIRST AND SECOND DIFFERENCING DEVICES EACH HAVING FIRST AND SECOND INPUT LEADS AND AN OUTPUT, FIRST AND SECOND VOLTAGE DIVIDERS, SAID FIRST VOLTAGE DIVIDER BEING OPERATIVELY CONNECTED BETWEEN SAID FIRST INPUT LEAD OF SAID FIRST DIFFERENCING DEVICE AND SAID SECOND INPUT LEAD OF SAID SECOND DIFFERENCING DEVICE, SAID SECOND VOLTAGE DIVIDER BEING OPERATIVELY CONNECTED BETWEEN SAID FIRST INPUT LEAD OF SAID SECOND DIFFERENCING DEVICE AND SAID SECOND INPUT LEAD OF SAID FIRST DIFFERENCING DEVICE; POLARITY-SENSING MEANS RESPONSIVE TO THE OUT OF SAID COMPUTER DEVICE AND EFFECTIVE TO PRODUCE A SIGNAL WHEN AN INPUT THERETO FROM SAID COMPUTER DEVICE HAS A SELECTED POLARITY, SAID POLARITY-SENSING MEANS COMPRISING: AN AND DEVICE HAVING A PLURALITY OF INPUT MEANS AND ADAPTED TO PRODUCE AN OUTPUT SIGNAL ONLY WHEN THE SIGNALS APPLIED TO THE INPUT MEANS HAVE THE SAME POLARITY,
Claim 2
Dependent Claim
189 words
THRESHOLD RATIO COMPARATOR APPARATUS FOR COMPARING AND INDICATING THE RELATIONSHIP BETWEEN A PAIR OF APPLIED SIGNALS WHICH DIFFER IN AMPLITUDE, COMPRISING: A COMPUTER DEVICE HAVING EITHER POSITIVE OR NEGATIVE OUTPUT AS A FUNCTION OF THE RATIO OF TWO SIGNAL INPUTS THERETO BEING ABOVE OR BELOW A SELECTED THESHOLD RATIO VALUE; SAID COMPUTER DEVICE COMPRISING: FIRST AND SECOND DIFFERENCING DEVICES EACH HAVING FIRST AND SECOND INPUT LEADS AND AN OUTPUT, FIRST AND SECOND VOLTAGE DIVIDERS, SAID FIRST VOLTAGE DIVIDER BEING OPERATIVELY CONNECTED BETWEEN SAID FIRST INPUT LEAD OF SAID FIRST DIFFERENCING DEVICE AND SAID SECOND INPUT LEAD OF SAID SECOND DIFFERENCING DEVICE, SAID SECOND VOLTAGE DIVIDER BEING OPERATIVELY CONNECTED BETWEEN SAID FIRST INPUT LEAD OF SAID SECOND DIFFERENCING DEVICE AND SAID SECOND INPUT LEAD OF SAID FIRST DIFFERENCING DEVICE; POLARITY-SENSING MEANS RESPONSIVE TO THE OUT OF SAID COMPUTER DEVICE AND EFFECTIVE TO PRODUCE A SIGNAL WHEN AN INPUT THERETO FROM SAID COMPUTER DEVICE HAS A SELECTED POLARITY, SAID POLARITY-SENSING MEANS COMPRISING: AN AND DEVICE HAVING A PLURALITY OF INPUT MEANS AND ADAPTED TO PRODUCE AN OUTPUT SIGNAL ONLY WHEN THE SIGNALS APPLIED TO THE INPUT MEANS HAVE THE SAME POLARITY,
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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |