US3883808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio
Assignee: UNIDEN Corp AN IN CORP
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Filing: 1969-07-29
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Granted: 1975-05-13
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Expires: 1989-07-29
Abstract
Abstract An FM monitor type radio having indicator lights on its front face to indicate the particular frequency to which the radio is tuned. A digital counter driven by a multivibrator cycles the radio in order, through its various frequencies. The multivibrator is switchable from a free running state to a state in which it is actuated to drive the counter one position by means of a manual selector switch. The number of frequencies to which the radio tunes can be controlled by opening or closing one or more of a plurality of switches each of which is provided for a respective one of the frequencies.
Inventors
- 👤 Joseph E Boone
- 👤 Louis E Schonegg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:46
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/246; H03J7/00; H03J7/18
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
137 words
Radio apparatus comprising a radio receiver, said receiver being tunable to several different frequencies, means for stepping said receiver through said several frequencies in a regular order, means for locking said receiver on a given frequency as long as there is a signal received on that frequency, and for causing automatic resumption of said stepping after the signal ceases, means for causing said stepping to be automatic, means for visually indicating the frequency to which the receiver is tuned, squelch means for automatically muting the audio during said automatic stepping and switch means for manually precluding the operation of said locking means in response to signals on any selected single one of the frequencies while permitting operation of said locking means in response to signals on other frequencies of the several frequencies during said automatic stepping operation.
Claim 2
Dependent Claim
137 words
Radio apparatus comprising a radio receiver, said receiver being tunable to several different frequencies, means for stepping said receiver through said several frequencies in a regular order, means for locking said receiver on a given frequency as long as there is a signal received on that frequency, and for causing automatic resumption of said stepping after the signal ceases, means for causing said stepping to be automatic, means for visually indicating the frequency to which the receiver is tuned, squelch means for automatically muting the audio during said automatic stepping and switch means for manually precluding the operation of said locking means in response to signals on any selected single one of the frequencies while permitting operation of said locking means in response to signals on other frequencies of the several frequencies during said automatic stepping operation.
Claim 3
Dependent Claim
26 words
Radio apparatus as defined in claim 1 wherein the switch means includes several switches there being one switch associated with each frequency of said several frequencies.
Claim 4
Dependent Claim
37 words
Radio apparatus as defined in claim 2 in which said indicating means includes several lights, there being one light associated with each frequency of said several frequencies to indicate the channel to which the receiver is tuned.
Claim 5
Dependent Claim
32 words
Radio apparatus as defined in claim 3 in which each of said indicator lights is arranged to be fully energized at all times that the radio is tuned to the respective frequency.
Claim 6
Dependent Claim
23 words
Radio apparatus as defined in claim 2 in which said stepping means comprises a digital counter and a multivibrator driving said digital counter.
Claim 7
Dependent Claim
85 words
Radio apparatus as defined in claim 5 which additionally comprises means coupling said counter to said switches and to said crystals, said counter being arranged upon actuation by said multivibrator to deliver a signal in a regular order to said coupling means, said coupling means being associated with respective ones of said switches and respective ones of said crystals whereby the opening of any desired one or more of said switches prevents said counter from delivering a signal through the switch to the respective crystal.
Claim 8
Dependent Claim
57 words
Radio apparatus as defined in claim 6 in which said indicating means includes several indicator lights, each of said indicator lights being connected to said coupling means and controlled by a respective one of said switches wherein said indicator lights indicate which of said crystals is operating and the frequency to which said radio apparatus is tuned.
Claim 9
Dependent Claim
30 words
Radio apparatus as defined in claim 1 in which said several Frequencies are determined by several crystals, there being one crystal used to determine each frequency of said several frequencies.
Claim 10
Dependent Claim
19 words
Radio apparatus as defined in claim 8 wherein several crystals are used in one oscillator for tuning the receiver.
Claim 11
Dependent Claim
124 words
Radio apparatus comprising a radio receiver, said receiver being tunable to several different frequencies, means for stepping said receiver through said several frequencies in a regular order, means for locking said receiver on a given frequency as long as there is a signal received on that frequency, and for causing automatic resumption of said stepping after the signal ceases, means for causing said stepping to be automatic, means for visually indicating the frequency to which the receiver is tuned, squelch means for automatically muting the audio during said automatic stepping, and switch means for manually causing the locking means of the receiver to be unresponsive to signals on any desired single one or on any desired plurality of the frequencies during said automatic stepping.
Claim 12
Dependent Claim
124 words
Radio apparatus comprising a radio receiver, said receiver being tunable to several different frequencies, means for stepping said receiver through said several frequencies in a regular order, means for locking said receiver on a given frequency as long as there is a signal received on that frequency, and for causing automatic resumption of said stepping after the signal ceases, means for causing said stepping to be automatic, means for visually indicating the frequency to which the receiver is tuned, squelch means for automatically muting the audio during said automatic stepping, and switch means for manually causing the locking means of the receiver to be unresponsive to signals on any desired single one or on any desired plurality of the frequencies during said automatic stepping.
Claim 13
Dependent Claim
26 words
Radio apparatus as defined in claim 10 wherein the switch means includes several switches there being one switch associated with each frequency of said several frequencies.
Claim 14
Dependent Claim
37 words
Radio apparatus as defined in claim 11 in which said indicating means includes several lights, there being one light associated with each frequency of said several frequencies to indicate the channel to which the receiver is tuned.
Claim 15
Dependent Claim
32 words
Radio apparatus as defined in claim 12 in which each of said indicator lights is arranged to be fully energized at all times that the radio is tuned to the respective frequency.
Claim 16
Dependent Claim
30 words
Radio apparatus as defined in claim 10 in which said several frequencies are determined by several crystals, there being one crystal used to determine each frequency of said several frequencies.
Claim 17
Dependent Claim
19 words
Radio apparatus as defined in claim 14 wherein several crystals are used in one oscillator for tuning the receiver.
Claim 18
Dependent Claim
23 words
Radio apparatus as defined in claim 10 in which said stepping means comprises a digital counter and a multivibrator driving said digital counter.
Claim 19
Dependent Claim
109 words
Radio apparatus as defined in claim 16 wherein said switch means includes several switches, there being one of said several switches associated with each frequency of said several frequencies, said radio apparatus additionally comprising means coupling said counter to said switches and to said crystals, said counter being arranged upon actuation by said multivibrator to deliver a signal in a regular order to said coupling means, said coupling means being associated with respective ones of said switches and respective ones of said crystals whereby the opening of any desired one or more of said switches prevents said counter from delivering a signal through the switch to the respective crystal.
Claim 20
Dependent Claim
57 words
Radio apparatus as defined in claim 17 in which said indicating means includes several indicator lights, each of said indicator lights being connected to said coupling means and controlled by a respective one of said switches whereby said indicator lights indicate which of said crystals is operating and the frequency to which said radio apparatus is tuned.
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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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |