Patent US3096488A successfully refreshed from Google Patents.
US3096488A
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Assignee: Individual
•
Filing: 1961-09-14
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Granted: 1963-07-02
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Expires: 1981-09-14
Abstract
No abstract record available.
Inventors
- 👤 Morton R Lomask
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:24
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/1638
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
AN ELECTRONIC FILTERING DEVICE COMPRISING, IN COMBINATION: A FIRST AMPLIFIER HAVING CONNECTION MEANS FOR APPLICATION OF AN INPUT SIGNAL AND CONNECTION MEANS FOR DERIVATION OF AN OUTPUT SIGNAL; A REJECTION FILTER COMPRISING PHASE-SHIFTING MEANS AND SUMMING MEANS, A PORTION OF SAID AMPLIFIER OUTPUT SIGNAL BEING APPLIED TO SAID PHASE-SHIFTING MEANS AND TO SAID SUMMING MEANS AS AN INPUT AND THE PHASE-SHIFTED OUTPUT SIGNAL OF SAID PHASESHIFTING MEANS ALSO BEING APPLIED TO SAID SUMMING MEANS AS AN INPUT, SAID SUMMING MEANS OPERATING TO ADD ITS PHASE-SHIFTED AND UNPHASE-SHIFTED INPUT SIGNALS, THE RESULTANT SIGNAL BEING APPLIED AS A NEGATIVE FEEDBACK INPUT SIGNAL TO SAID AMPLIFIER, SAID AMPLIFIER INCLUDING MEANS FOR PREVENTING LOW-FREQUENCY OSCILLATIONS AND MEANS FOR PREVENTING HIGH-FREQUENCY OSCILLATIONS, SAID SUMMING MEANS FURTHER INCLUDING SIGNAL ATTENUATING MEANS, THE SUMMED OUTPUT SIGNAL BEING PASSED THROUGH SAID SIGNAL ATTENUATING MEANS BEFORE BEING FED BACK TO SAID AMPLIFIER, SAID SIGNAL ATTENDING MEANS ACTING AS A SELECTIVITY CONTROL; AND A DIFFERENTIAL AMPLIFIER FOR AMPLIFYING THE DIFFERENCE BETWEEN TWO INPUT SIGNALS, THE FIRST INPUT BEING THE OUTPUT SIGNAL OF SAID FIRST AMPLIFIER AND THE SECOND INPUT BEING A PORTION OF SAID PHASE-SHIFTED SIGNAL, THE OUTPUT OF SAID DIFFERENTIAL AMPLIFIER BEING THE OUTPUT SIGNAL OF SAID ELECTRONIC FILTERING DEVICE.
Claim 2
Dependent Claim
201 words
AN ELECTRONIC FILTERING DEVICE COMPRISING, IN COMBINATION: A FIRST AMPLIFIER HAVING CONNECTION MEANS FOR APPLICATION OF AN INPUT SIGNAL AND CONNECTION MEANS FOR DERIVATION OF AN OUTPUT SIGNAL; A REJECTION FILTER COMPRISING PHASE-SHIFTING MEANS AND SUMMING MEANS, A PORTION OF SAID AMPLIFIER OUTPUT SIGNAL BEING APPLIED TO SAID PHASE-SHIFTING MEANS AND TO SAID SUMMING MEANS AS AN INPUT AND THE PHASE-SHIFTED OUTPUT SIGNAL OF SAID PHASESHIFTING MEANS ALSO BEING APPLIED TO SAID SUMMING MEANS AS AN INPUT, SAID SUMMING MEANS OPERATING TO ADD ITS PHASE-SHIFTED AND UNPHASE-SHIFTED INPUT SIGNALS, THE RESULTANT SIGNAL BEING APPLIED AS A NEGATIVE FEEDBACK INPUT SIGNAL TO SAID AMPLIFIER, SAID AMPLIFIER INCLUDING MEANS FOR PREVENTING LOW-FREQUENCY OSCILLATIONS AND MEANS FOR PREVENTING HIGH-FREQUENCY OSCILLATIONS, SAID SUMMING MEANS FURTHER INCLUDING SIGNAL ATTENUATING MEANS, THE SUMMED OUTPUT SIGNAL BEING PASSED THROUGH SAID SIGNAL ATTENUATING MEANS BEFORE BEING FED BACK TO SAID AMPLIFIER, SAID SIGNAL ATTENDING MEANS ACTING AS A SELECTIVITY CONTROL; AND A DIFFERENTIAL AMPLIFIER FOR AMPLIFYING THE DIFFERENCE BETWEEN TWO INPUT SIGNALS, THE FIRST INPUT BEING THE OUTPUT SIGNAL OF SAID FIRST AMPLIFIER AND THE SECOND INPUT BEING A PORTION OF SAID PHASE-SHIFTED SIGNAL, THE OUTPUT OF SAID DIFFERENTIAL AMPLIFIER BEING THE OUTPUT SIGNAL OF SAID ELECTRONIC FILTERING DEVICE.
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) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |