Patent US3079568A successfully refreshed from Google Patents.
US3079568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broad band amplifier
Assignee: ACF Industries Inc
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Filing: 1959-02-09
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Granted: 1963-02-26
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Expires: 1979-02-09
Abstract
No abstract record available.
Inventors
- 👤 John J Werth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:30
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/38; H03F3/387; H03F1/00; H03F1/30; H03F1/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
AN AMPLIFIER SYSTEM FOR AMPLIFYING A BAND OF SIGNAL FREQUENCIES, SAID SYSTEM COMPRISING AN INPUT CIRCUIT INCLUDING A HIGH PASS FILTER CIRCUIT AND A LOW PASS FILTER MEANS CONNECTED IN SERIES, SAID HIGH PASS FILTER CIRCUIT AND SAID LOW PASS FILTER MEANS BOTH INCLUDING CIRCUIT COMPONENTS RESPONSIVE TO AN INTERMEDIATE BAND OF SIGNAL FREQUENCIES BETWEEN THE LOW PORTION AND THE HIGH PORTION OF SAID SIGNAL FREQUENCY BAND, SAID HIGH PASS FILTER COMPRISING A SERIES CONNECTED CAPACITOR AND A RESISTOR AND CAPACITOR CONNECTED IN PARALLEL, AMPLIFIER MEANS COUPLED ACROSS SAID HIGH PASS FILTER CIRCUIT TO AMPLIFY SAID INTERMEDIATE BAND AND SAID LOW FREQUENCY PORTION OF SAID BAND OF SIGNAL FREQUENCIES, SAID AMPLIFIER MEANS INCLUDING A MODULATION CIRCUIT PROVIDING AN ALTERNATING CURRENT CARRIER SIGNAL TO BE MODULATED BY SAID LOW FREQUENCY SIGNAL PORTION, AN AMPLIFIER CIRCUIT COUPLED ACROSS SAID LOW PASS FILTER MEANS TO AMPLIFY SAID INTERMEDIATE BAND AND SAID HIGH FREQUENCY PORTION OF SAID BAND OF SIGNAL FREQUENCIES, AND CIRCUIT MEANS CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS AND SAID AMPLIFIER CIRCUIT TO COMBINE SAID AMPLIFIED INTERMEDIATE BAND AND SAID HIGH AND LOW FREQUENCY PORTIONS INTO A COMPSITE SIGNAL OUTPUT, SAID LAST CIRCUIT MEANS INCLUDING A DEMODULATOR CIRCUIT TO PROVIDE AN OUTPUT CONSISTING OF AN AMPLIFIED LOW FREQUENCY SIGNAL PORTION.
Claim 2
Dependent Claim
210 words
AN AMPLIFIER SYSTEM FOR AMPLIFYING A BAND OF SIGNAL FREQUENCIES, SAID SYSTEM COMPRISING AN INPUT CIRCUIT INCLUDING A HIGH PASS FILTER CIRCUIT AND A LOW PASS FILTER MEANS CONNECTED IN SERIES, SAID HIGH PASS FILTER CIRCUIT AND SAID LOW PASS FILTER MEANS BOTH INCLUDING CIRCUIT COMPONENTS RESPONSIVE TO AN INTERMEDIATE BAND OF SIGNAL FREQUENCIES BETWEEN THE LOW PORTION AND THE HIGH PORTION OF SAID SIGNAL FREQUENCY BAND, SAID HIGH PASS FILTER COMPRISING A SERIES CONNECTED CAPACITOR AND A RESISTOR AND CAPACITOR CONNECTED IN PARALLEL, AMPLIFIER MEANS COUPLED ACROSS SAID HIGH PASS FILTER CIRCUIT TO AMPLIFY SAID INTERMEDIATE BAND AND SAID LOW FREQUENCY PORTION OF SAID BAND OF SIGNAL FREQUENCIES, SAID AMPLIFIER MEANS INCLUDING A MODULATION CIRCUIT PROVIDING AN ALTERNATING CURRENT CARRIER SIGNAL TO BE MODULATED BY SAID LOW FREQUENCY SIGNAL PORTION, AN AMPLIFIER CIRCUIT COUPLED ACROSS SAID LOW PASS FILTER MEANS TO AMPLIFY SAID INTERMEDIATE BAND AND SAID HIGH FREQUENCY PORTION OF SAID BAND OF SIGNAL FREQUENCIES, AND CIRCUIT MEANS CONNECTED TO THE OUTPUT OF SAID AMPLIFIER MEANS AND SAID AMPLIFIER CIRCUIT TO COMBINE SAID AMPLIFIED INTERMEDIATE BAND AND SAID HIGH AND LOW FREQUENCY PORTIONS INTO A COMPSITE SIGNAL OUTPUT, SAID LAST CIRCUIT MEANS INCLUDING A DEMODULATOR CIRCUIT TO PROVIDE AN OUTPUT CONSISTING OF AN AMPLIFIED LOW FREQUENCY SIGNAL PORTION.
References Cited (Backward Citations)
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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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |