US3349331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distortionless volume-tone control circuit
Assignee: Motorola Solutions Inc
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Filing: 1964-05-13
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Granted: 1967-10-24
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Anthun Bjarne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:22
CPC Classifications
H; H03; H03G; H03G5/00; H03G5/02; H03G5/04; H03G5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A RADIO RECEIVER HAVING A DIODE DETECTOR, INCLUDING IN COMBINATION, A DIRECT CURRENT VOLTAGE DIVIDER HAVING FIRST AND SECOND LEGS AND AN INTERMEDIATE POINT CONNECTED TO THE DETECTOR FOR BIASING THE SAME, SAID FIRST LEG OF SAID DIVIDER BEING CONNECTED ACROSS THE OUTPUT OF THE DETECTOR AND INCLUDING A PARALLEL COMBINATION OF A RESISTOR AND A CAPACITOR IN SERIES WITH A VARIABLE RESISTOR, SAID CAPACITOR AND SAID VARIABLE RESISTOR FORMING A TONE CONTROL CIRCUIT FOR THE RADIO RECEIVER, AND SAID RESISTOR AND SAID VARIABLE RESISTOR CHANGING THE DETECTOR BIAS FOR VARIATION IN DETECTOR LOAD ACCORDING TO THE OPERATION OF THE TONE CONTROL CIRCUIT.
Claim 2
Dependent Claim
103 words
A RADIO RECEIVER HAVING A DIODE DETECTOR, INCLUDING IN COMBINATION, A DIRECT CURRENT VOLTAGE DIVIDER HAVING FIRST AND SECOND LEGS AND AN INTERMEDIATE POINT CONNECTED TO THE DETECTOR FOR BIASING THE SAME, SAID FIRST LEG OF SAID DIVIDER BEING CONNECTED ACROSS THE OUTPUT OF THE DETECTOR AND INCLUDING A PARALLEL COMBINATION OF A RESISTOR AND A CAPACITOR IN SERIES WITH A VARIABLE RESISTOR, SAID CAPACITOR AND SAID VARIABLE RESISTOR FORMING A TONE CONTROL CIRCUIT FOR THE RADIO RECEIVER, AND SAID RESISTOR AND SAID VARIABLE RESISTOR CHANGING THE DETECTOR BIAS FOR VARIATION IN DETECTOR LOAD ACCORDING TO THE OPERATION OF THE TONE CONTROL CIRCUIT.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |