Patent US3244987A successfully refreshed from Google Patents.
US3244987A
Expired / Lapsed
US
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Quadrature rejection circuit using biased diode bridge
Assignee: Bendix Corp
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Filing: 1963-03-15
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Granted: 1966-04-05
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Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Frank Prapis
- 👤 Gunter J Gessner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:37
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/22; G; G01; G01N; G01N23/00; G01N23/20; G01N23/205; G08; G08C; G08C19/00; G08C19/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A GATE CIRCUIT HAVING AN INPUT AND AN OUTPUT, MEANS FOR PROVIDING ALTERNATING CURRENT SIGNALS WITH A DESIRED PHASE COMPONENT AND A QUADRATURE VOLTAGE CONNECTED TO THE INPUT, A BRIDGE CIRCUIT HAVING FOUR DIODES AND A TERMINAL BETWEEN EACH PAIR OF DIODES, THE INPUT AND THE OUTPUT BEING CONNECTED IN SERIES DIRECTLY TO TWO OPPOSING TERMINALS OF THE BRIDGE CIRCUIT, MEANS FOR PROVIDING A FULL WAVE RECTIFIED SINUSOIDAL VOLTAGE AND A SUBSTANTIALLY CONSTANT UNIDIRECTIONAL VOLTAGE CONNECTED ACROSS THE OTHER TWO OPPOSING TERMINALS OF THE BRIDGE CIRCUIT TO PERIODICALLY RENDER THE DIODES CONDUCTING WHEN THE CONSTANT UNDIRECTIONAL VOLTAGE EXCEEDS THE RECTIFIED SINUSODIAL VOLTAGE AND TIMED TO RENDER THE DIODES CONDUCTING WHEN THE DESIRED PHASE COMPONENT IS A MAXIUM AND THE QUADRATURE VOLTAGE IS A MINIUM TO PASS THE DESIRED PHASE COMPONENT OF THE SIGNALS AND REJECT THE QUADRATURE VOLTAGE.
Claim 2
Dependent Claim
138 words
A GATE CIRCUIT HAVING AN INPUT AND AN OUTPUT, MEANS FOR PROVIDING ALTERNATING CURRENT SIGNALS WITH A DESIRED PHASE COMPONENT AND A QUADRATURE VOLTAGE CONNECTED TO THE INPUT, A BRIDGE CIRCUIT HAVING FOUR DIODES AND A TERMINAL BETWEEN EACH PAIR OF DIODES, THE INPUT AND THE OUTPUT BEING CONNECTED IN SERIES DIRECTLY TO TWO OPPOSING TERMINALS OF THE BRIDGE CIRCUIT, MEANS FOR PROVIDING A FULL WAVE RECTIFIED SINUSOIDAL VOLTAGE AND A SUBSTANTIALLY CONSTANT UNIDIRECTIONAL VOLTAGE CONNECTED ACROSS THE OTHER TWO OPPOSING TERMINALS OF THE BRIDGE CIRCUIT TO PERIODICALLY RENDER THE DIODES CONDUCTING WHEN THE CONSTANT UNDIRECTIONAL VOLTAGE EXCEEDS THE RECTIFIED SINUSODIAL VOLTAGE AND TIMED TO RENDER THE DIODES CONDUCTING WHEN THE DESIRED PHASE COMPONENT IS A MAXIUM AND THE QUADRATURE VOLTAGE IS A MINIUM TO PASS THE DESIRED PHASE COMPONENT OF THE SIGNALS AND REJECT THE QUADRATURE VOLTAGE.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |