Patent EP0372741A2 successfully refreshed from Google Patents.
US3233178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicular radio receiver with speed compensated volume control
Assignee: Motorola Solutions Inc
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Filing: 1962-12-05
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Granted: 1966-02-01
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Expires: 1982-12-05
Abstract
No abstract record available.
Inventors
- 👤 Thcodore A Byles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:05
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN A VEHICLE UTILIZING AN INTERNAL COMBUSTION ENGINE AND HAVING A VOLTAGE SOURCE, THE COMBINATION OF AN IGNITION SYSTEM AND PULSING MEANS FOR SUPPLYING HIGH VOLTAGE PULSES THERETO, A BALLAST RESISTOR FOR CONNECTING THE VOLTAGE SOURCE TO SAID IGNITION SYSTEM, RADIO RECEIVER RECEPTION MEANS PROVIDING AN AUDIO FREQUENCY OUTPUT FROM RECEIVED RADIO FREQUENCY SIGNALS AND INCLUDING AN AUDIO AMPLIFIER, VARISTOR MEANS CONNECTED IN SAID AUDIO AMPLIFIER TO CONTROL THE OUTPUT THEREOF, AND MEANS PROVIDING A DIRECT CURRENT OUTPUT ACCORDING TO THE FREQUENCY OF APPLIES SIGNALS CONNECTING SAID VARISTOR TO THE JUNCTURE BETWEEN SAID BALLAST RESISTOR AND SAID IGNITION SYSTEM TO PROVIDE A CONTROL CURRENT FOR SAID VARISTOR PROPORTIONAL TO THE SPEED OF THE VEHICLE, WHEREBY THE OUTPUT OF SAID AUDIO AMPLIFIER IS INCREASED AS THE SPEED OF THE VEHICLE INCREASES.
Claim 2
Dependent Claim
130 words
IN A VEHICLE UTILIZING AN INTERNAL COMBUSTION ENGINE AND HAVING A VOLTAGE SOURCE, THE COMBINATION OF AN IGNITION SYSTEM AND PULSING MEANS FOR SUPPLYING HIGH VOLTAGE PULSES THERETO, A BALLAST RESISTOR FOR CONNECTING THE VOLTAGE SOURCE TO SAID IGNITION SYSTEM, RADIO RECEIVER RECEPTION MEANS PROVIDING AN AUDIO FREQUENCY OUTPUT FROM RECEIVED RADIO FREQUENCY SIGNALS AND INCLUDING AN AUDIO AMPLIFIER, VARISTOR MEANS CONNECTED IN SAID AUDIO AMPLIFIER TO CONTROL THE OUTPUT THEREOF, AND MEANS PROVIDING A DIRECT CURRENT OUTPUT ACCORDING TO THE FREQUENCY OF APPLIES SIGNALS CONNECTING SAID VARISTOR TO THE JUNCTURE BETWEEN SAID BALLAST RESISTOR AND SAID IGNITION SYSTEM TO PROVIDE A CONTROL CURRENT FOR SAID VARISTOR PROPORTIONAL TO THE SPEED OF THE VEHICLE, WHEREBY THE OUTPUT OF SAID AUDIO AMPLIFIER IS INCREASED AS THE SPEED OF THE VEHICLE INCREASES.
References Cited (Backward Citations)
US2834877A
Cited
US2973432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |