US3090000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High impedance voltage comparator
Assignee: Westinghouse Electric Corp
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Filing: 1961-07-20
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Granted: 1963-05-14
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Expires: 1981-07-20
Abstract
No abstract record available.
Inventors
- 👤 John M Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:22
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A HIGH IMPEDANCE COMPARATOR FOR SELECTIVELY COMPARING THE AMPLITUDE OF TWO ANALOG SIGNALS COMPRISING, A TRANSFORMER INCLUDING A PRIMARY WINDING OPERATIVE TO BE SELECTIVELY PULSED AND A SECONDARY WINDING HAVING A CENTER TAP, A PAIR OF UNIDIRECTIONAL DEVICES POLED IN THE SAME DIRECTION HAVING A COMMON JUNCTION THEREBETWEEN FIRST HIGH IMPEDANCE MEANS OPERATIVELY CONNECTED TO RECEIVE ONE OF SAID ANALOG SIGNALS AND APPLY SAID SIGNALS TO SAID CENTER TAP, SECOND HIGH IMPEDANCE MEANS OPERATIVELY CONNECTED TO RECEIVE THE OTHER OF SAID ANALOG SIGNALS AND TO APPLY SAID SIGNALS TO SAID COMMON JUNCTION, WITH SAID PAIR OF UNIDIRECTIONAL DEVICES BEING CONNECTED ACROSS SAID SECONDARY WINDING, AND DIFFERENCING MEANS OPERATIVELY CONNECTED TO SAID CENTER TAP AND TO SAID COMMON JUNCTION AND BEING OPERATIVE TO PROVIDE DIFFERENCE SIGNALS OF SAID ANALOG SIGNALS IN RESPONSE TO SAID PRIMARY WINDING BEING PULSED.
Claim 2
Dependent Claim
137 words
A HIGH IMPEDANCE COMPARATOR FOR SELECTIVELY COMPARING THE AMPLITUDE OF TWO ANALOG SIGNALS COMPRISING, A TRANSFORMER INCLUDING A PRIMARY WINDING OPERATIVE TO BE SELECTIVELY PULSED AND A SECONDARY WINDING HAVING A CENTER TAP, A PAIR OF UNIDIRECTIONAL DEVICES POLED IN THE SAME DIRECTION HAVING A COMMON JUNCTION THEREBETWEEN FIRST HIGH IMPEDANCE MEANS OPERATIVELY CONNECTED TO RECEIVE ONE OF SAID ANALOG SIGNALS AND APPLY SAID SIGNALS TO SAID CENTER TAP, SECOND HIGH IMPEDANCE MEANS OPERATIVELY CONNECTED TO RECEIVE THE OTHER OF SAID ANALOG SIGNALS AND TO APPLY SAID SIGNALS TO SAID COMMON JUNCTION, WITH SAID PAIR OF UNIDIRECTIONAL DEVICES BEING CONNECTED ACROSS SAID SECONDARY WINDING, AND DIFFERENCING MEANS OPERATIVELY CONNECTED TO SAID CENTER TAP AND TO SAID COMMON JUNCTION AND BEING OPERATIVE TO PROVIDE DIFFERENCE SIGNALS OF SAID ANALOG SIGNALS IN RESPONSE TO SAID PRIMARY WINDING BEING PULSED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |