US3801897A — Control circuitry for remote tuning system

Claim 1

Independent Claim 239 words

In a signal receiver having a plurality of signal channels, a control circuit for a remote control system comprising: a source of rotational direction signals and a potential source; bi-directional motor means; first and second potential development means coupled to said signal source and said motor means; disablement circuit means interconnecting said first and second potential development means for effecting disablement of one of said first and second potential development means upon enablement of the other of said potential development means; rotary switching means having a rotatable arm and a plurality signal channel contacts each coupled by a channel indicating means to a varactor tuner means, said arm mechanically coupled to said motor means, electrically coupled to said potential source, and selectively coupled to one of said plurality of signal channel contacts; tracking means coupled to said rotary switching meanS and to said potential sustaining means to effect tracking of manual tunings by said remote control system; potential sustaining means coupled to said rotary switching means and to said first and second potential development means for effecting continued rotation of said motor means intermediate coupling of said rotatable arm to one of said plurality of signal channel contacts; and remote-manual switching means having first and second terminals coupled to said rotary switching means and a remote solenoid means coupled to said first and second potential development means for selectively coupling said first and second terminals to said potential source.

Claim 2

Dependent Claim 239 words

In a signal receiver having a plurality of signal channels, a control circuit for a remote control system comprising: a source of rotational direction signals and a potential source; bi-directional motor means; first and second potential development means coupled to said signal source and said motor means; disablement circuit means interconnecting said first and second potential development means for effecting disablement of one of said first and second potential development means upon enablement of the other of said potential development means; rotary switching means having a rotatable arm and a plurality signal channel contacts each coupled by a channel indicating means to a varactor tuner means, said arm mechanically coupled to said motor means, electrically coupled to said potential source, and selectively coupled to one of said plurality of signal channel contacts; tracking means coupled to said rotary switching meanS and to said potential sustaining means to effect tracking of manual tunings by said remote control system; potential sustaining means coupled to said rotary switching means and to said first and second potential development means for effecting continued rotation of said motor means intermediate coupling of said rotatable arm to one of said plurality of signal channel contacts; and remote-manual switching means having first and second terminals coupled to said rotary switching means and a remote solenoid means coupled to said first and second potential development means for selectively coupling said first and second terminals to said potential source.

Claim 3

Dependent Claim 36 words

The control circuit of claim 1 wherein each one of said first and second potential development means includes signal detector means, amplifier means, and switching means coupled to said signal source and said bi-directional motor means.

Claim 4

Dependent Claim 41 words

The control circuit of claim 1 wherein said potential sustaining means includes a pair of unidirectional conduction devices coupled to one another and to said first and second potential development means with the junction therebetween coupled to said rotary switching means.

Claim 5

Dependent Claim 54 words

The control circuit of claim 1 wherein said rotary switching means includes a plurality of manually operable switches each coupled to a signal channel contact and in common to said remote-manual switching means, said switches being mechanically interconnected to provide closure of only one and opening of all remaining switches at any one time.

Claim 6

Dependent Claim 238 words

In a signal receiver having a plurality of signal channels, a control circuit for a remote control system comprising: a source of rotational direction signals; a potential source; bi-directional motor means including an AC motor having a pair of windings; first and second potential development means coupled to said source of rotational direction signals and to said motor means by way of said windings connected to a potential source; disablement circuit means wherein each one of said first and second potential development means is coupled to the other by a first impedance with a second impedance coupling said first impedance and one of said first and second potential development means to a potential reference level; rotary switching means having a rotatable arm and a plurality of signal channel contacts with said rotatable arm mechanically coupled to said AC motor and selectively coupled to one of said plurality of signal channel contacts; remote-manual switching means coupled to said potential source and selectively connected to said rotary switching means; potential sustaining means coupled to said rotary switching means and to said first and second potential development means for effecting application of a potential to one of said pair of windings and rotation of said AC motor in accordance with a signal from said source of sustaining signals; and tracking means in the form of a series connected resistor and diode coupling said rotary switching means to said potential sustaining means.

Claim 7

Dependent Claim 238 words

In a signal receiver having a plurality of signal channels, a control circuit for a remote control system comprising: a source of rotational direction signals; a potential source; bi-directional motor means including an AC motor having a pair of windings; first and second potential development means coupled to said source of rotational direction signals and to said motor means by way of said windings connected to a potential source; disablement circuit means wherein each one of said first and second potential development means is coupled to the other by a first impedance with a second impedance coupling said first impedance and one of said first and second potential development means to a potential reference level; rotary switching means having a rotatable arm and a plurality of signal channel contacts with said rotatable arm mechanically coupled to said AC motor and selectively coupled to one of said plurality of signal channel contacts; remote-manual switching means coupled to said potential source and selectively connected to said rotary switching means; potential sustaining means coupled to said rotary switching means and to said first and second potential development means for effecting application of a potential to one of said pair of windings and rotation of said AC motor in accordance with a signal from said source of sustaining signals; and tracking means in the form of a series connected resistor and diode coupling said rotary switching means to said potential sustaining means.

Claim 8

Dependent Claim 86 words

The control circuit of claim 5 wherein each one of said first and second potential development means includes a detector means coupled to said source of rotational direction signals; an amplifier means coupled to said detector means and potential sustaining means, to said AC motor means, and to the opposite one of said first and second potential development means; and a switching means coupled intermediate said amplifier means and a potential reference level and to the opposite one of said first and second potential development means.

Claim 9

Dependent Claim 47 words

The control circuit of claim 5 wherein said remote-manual switching means includes a solenoid means coupled to said first and second potential development means for selectively coupling said potential source to said rotary switching means in accordance with a signal from said source of rotational direction signals.

Claim 10

Dependent Claim 35 words

The control circuit of claim 5 wherein said potential sustainIng means includes an amplifier stage coupled to said rotary switching means for effecting amplification and inversion of a signal provided by said rotary switching means.

Claim 11

Dependent Claim 46 words

The control circuit of claim 5 wherein said potential sustaining means includes a diode coupled to said rotary switching means for effecting alteration in the potential applied to said first and second potential development means in accordance with the potential available from said rotary switching means.

Claim 12

Dependent Claim 22 words

The control circuit of claim 5 wherein said rotary switching means is coupled to VHF and UHF tuners of the varactor type.

Claim 13

Dependent Claim 46 words

The control circuit of claim 5 wherein said rotary switching means includes a plurality of signal channel contacts formed to provide band switching groups with each contact coupled to a channel indicating means, to a manually operable switch means, and selectively coupled to said rotatable arm.

Claim 14

Dependent Claim 235 words

In a signal receiver having a plurality of signal channels, a control circuit for a remote control system comprising: rotational direction signal sources; a potential source; bi-directional motor means including a transformer coupled to a power source and having a winding in series connection with a DC motor; first and second potential development means each coupled to a rotational direction signal source and to said bi-directional motor means; disablement circuit means having a first capacitor coupled to circuit ground and to a first resistor interconnecting said first and second potential development means and a second capacitor coupled to circuit ground and to a second resistor interconnecting said first and second potential development means; rotary switching means having a rotatable arm and a plurality of signal channel contacts, said rotatable arm mechanically coupled to said DC motor and selectively coupled to one of said signal channel contacts; remote-manual switching means coupled to said potential source and selectively coupled to said rotary switching means; potential sustaining means coupled to said rotary switching means and to said first and second potential development means for effecting continued directional rotation of said DC motor means intermediate contact of said rotatable arm with said signal channel contacts; and tracking means coupling said rotary switching means to the junction of said potential sustaining means and said second potential development means whereby tracking of manual tuning by a remote tuning circuit is effected.

Claim 15

Dependent Claim 235 words

In a signal receiver having a plurality of signal channels, a control circuit for a remote control system comprising: rotational direction signal sources; a potential source; bi-directional motor means including a transformer coupled to a power source and having a winding in series connection with a DC motor; first and second potential development means each coupled to a rotational direction signal source and to said bi-directional motor means; disablement circuit means having a first capacitor coupled to circuit ground and to a first resistor interconnecting said first and second potential development means and a second capacitor coupled to circuit ground and to a second resistor interconnecting said first and second potential development means; rotary switching means having a rotatable arm and a plurality of signal channel contacts, said rotatable arm mechanically coupled to said DC motor and selectively coupled to one of said signal channel contacts; remote-manual switching means coupled to said potential source and selectively coupled to said rotary switching means; potential sustaining means coupled to said rotary switching means and to said first and second potential development means for effecting continued directional rotation of said DC motor means intermediate contact of said rotatable arm with said signal channel contacts; and tracking means coupling said rotary switching means to the junction of said potential sustaining means and said second potential development means whereby tracking of manual tuning by a remote tuning circuit is effected.

Claim 16

Dependent Claim 53 words

The control circuit of claim 12 wherein said first and second potential development means each include a detector stage coupled to a signal source, an amplifier stage coupled to said detector stage by a diode, and a switching means in the form of a silicon controlled rectifier coupled to said DC motor means.

Claim 17

Dependent Claim 46 words

The control circuit of claim 12 wherein each one of said first and second potential development means includes a silicon controlled rectifier coupled to said DC motor means and to a potential reference level and a parallel coupled diode and capacitor shunting said silicon controlled rectifier.

Claim 18

Dependent Claim 28 words

The control circuit of claim 12 wherein said remote-manual switching means includes a solenoid means coupled by diodes to said first and to said second potential development means.

Claim 19

Dependent Claim 40 words

The control circuit of claim 12 wherein said rotary switching means includes a plurality of parallel coupled and mechanically interconnected signal channel switches whereby closure of one of said switches insures non-closure of any other of the plurality of switches.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-04-01	1977-10-01	1978-04-02	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-04-01	1981-10-01	1982-04-02	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-04-01	1985-10-01	1986-04-02	$7700.00	Window Closed / Lapsed

Control circuitry for remote tuning system

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