US3083321A
Expired / Lapsed
US
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Dominant signal selecting apparatus
Assignee: Schneider Electric Systems USA Inc
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Filing: 1960-03-22
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Granted: 1963-03-26
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Expires: 1980-03-22
Abstract
No abstract record available.
Inventors
- 👤 Wilfred H Howe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:31
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/0038
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
ELECTRICAL APPARATUS ADAPTED TO RECEIVE TWO D.-C. INPUT SIGNALS AND TO DEVELOP A SIGNAL OUTPUT CURRENT PROPORTIONAL IN MAGNITUDE TO THE LARGER ONE OF SAID INPUT SIGNALS, COMPRISING FIRST AND SECOND AMPLIFIERS, AN ELECTRICAL LOAD TO BE SUPPLIED WITH CURRENT FROM SAID AMPLIFIERS, FIRST AND SECOND CURRENT INVERSE FEEDBACK MEANS FOR EACH OF SAID AMPLIFIERS RESPECTIVELY, SAID FEEDBACK MEANS INCLUDING MEANS TO FEED THE FEEDBACK SIGNALS TO THE RESPECTIVE AMPLIFIER INPUTS IN SERIES-OPPOSITION TO THE CORRESPONDING INPUT SIGNAL SO AS TO DEVELOP A DIFFERENCE SIGNAL TO BE APPLIED TO EACH AMPLIFIER, CIRCUIT MEANS CONNECTING THE OUTPUTS OF SAID AMPLIFIERS IN SERIES WITH EACH OTHER AND WITH FEEDBACK MEANS AND SAID LOAD, AND FIRST AND SECOND RECTIFIER MEANS CONNECTED IN THE INPUT CIRCUITS OF SAID AMPLIFIERS RESPECTIVELY TO ISOLATE EITHER OF SAID AMPLIFIERS FROM ITS CORRESPONDING DIFFERENCE SIGNAL WHEN THAT DIFFERENCE SIGNAL HAS A PREDETERMINED 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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |