CLASS 334, TUNERS |
This subclass is indented under the class definition. Subject matter wherein the tuning unit consists of two or
more tuners of different types connected together either mechanically and/or
electrically to form a single unitary tuner.
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This subclass is indented under subclass 1. Subject matter wherein the combined tuners comprise at least
two different disk type or two different cylinder type tuners.
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This subclass is indented under subclass 1. Subject matter wherein a plurality of tuning units are mechanically
and/or electrically built together, each of the tuning
units mutually sharing a common tuning element with the tuning units
being so constructed that they are operated in sequence one after
the other by adjusting the common tuning element.
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This subclass is indented under the class definition. Subject matter wherein the tuned circuit is responsive to
and varied by an external magnetic field applied to the tuned circuit
or some element thereof. For example, the magnetic field is produced
by a specially movable permanent magnet.
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This subclass is indented under the class definition. Subject matter including a tuner, which has at least one
variable element that is mechanically variable, linked with actuating structure
which senses and responds significantly well to a particular stimulus
or condition which is external of the electrical circuit or a change
in such external stimulus or condition to thereby cause the variable
element to change, adjust or correct the resonant frequency of the
tuned circuit; or including a tuner which has at least one variable
element which is nonmechanically variable and which has the property,
as by chemical composition, of changing its reactance value in response
to a particular stimulus or condition which is external of the electrical
circuit or a change in such external stimulus or condition to thereby
cause a change, adjustment or correction in the resonant frequency
of the tuned circuit.
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This subclass is indented under subclass 5. Subject matter wherein the tuner includes an inductor and/or
capacitor which is responsive to some external stimulus.
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This subclass is indented under the class definition. Subject matter wherein the tuner unit is adapted to be operated
by a series of manually movable push buttons and/or levers
with each button or lever being adapted to selectively move the
tuning element through a mechanical mechanism to a different preselected
position or frequency when manual power is exerted on a particular
button or lever.
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This subclass is indented under the class definition. Subject matter in which the operation of the tuner is controlled
from a relatively distant point removed from the tuner by an extended or
remote control device or circuit.
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This subclass is indented under subclass 8. Subject matter in which the remote controlled tuner has
an electromagnetic operator, such as an electric motor, solenoid, or
the like.
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This subclass is indented under subclass 9. Subject matter in which the electromagnetic operator is
a solenoid and/or relay device.
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This subclass is indented under the class definition. Subject matter wherein the tuned circuit includes a reactance
element or elements which are directly responsive to a change in
voltage and/or current which is applied across or through
the reactance element or elements, with the variation in
the voltage and/or current causing the reactance value
of the element or elements to vary or change and thereby tune or adjust
the resonance of the tuned circuit.
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This subclass is indented under subclass 11. Subject matter wherein the inductor element is variable
in response to current flow through the inductor winding or in response
to a magnetic field or bias applied to the core element.
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This subclass is indented under subclass 12. Subject matter wherein the change in the reactance value
of the saturable core type inductance element is controlled by circuit
means which is responsive to an undesired change in frequency occurring
in the tuned circuit, the circuit means thereby varying the resonant
frequency of the tuned circuit a sufficient amount to compensate
for the undesired frequency shift.
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This subclass is indented under subclass 11. Subject matter in which an active element is operated in
such a manner that it presents the characteristics of a variable
reactance to the rest of the tuned circuit.
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This subclass is indented under subclass 14. Subject matter in which the active element is a semiconductor device. | |
This subclass is indented under subclass 14. Subject matter in which the variable reactance tuner is
provided with control means for automatically tuning the resonant
circuit to its optimum operating point and to maintain the circuit
at that point by regulating the adjustment of the variable reactance
tuner to compensate for variations in the tuned circuit or in the
frequency of the signal wave to which the circuit is tuned.
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This subclass is indented under the class definition. Subject matter in which the tuned circuit consists of at
least one variable reactance tuning unit which is adapted to have
its reactance adjusted so as to vary the resonance of the tuner,
the adjustable reactance tuning unit being driven by an electromagnetic
operator which is mechanically connected to the variable tuning
unit.
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This subclass is indented under subclass 17. Subject matter in which the electromagnetic operator is
provided with a control system and/or means which causes
the operator to drive the variable tuning unit in such a manner
as to scan a frequency or band of frequencies with the control system
and/or means acting upon the electromagnetic operator or
its associated circuit to stop the scanning of the tuner unit when the
tuner is properly adjusted to receive a given signal or signals.
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This subclass is indented under subclass 18. Subject matter wherein the electromagnetic operator which
furnishes the drive for the variable tuning unit is a solenoid and/or
relay device.
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This subclass is indented under subclass 18. Subject matter wherein the electromagnetic operator is a
motor of the rotating armature type.
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This subclass is indented under subclass 20. Subject matter wherein the electromagnetic operator is provided
with a control system and/or means to select and tune the
variable tuning unit to a predetermined position thereby adjusting
the tuner to resonate at a particular mean frequency.
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This subclass is indented under subclass 20. Subject matter wherein the motor is connected to means for
reversing the direction in which the motor is driving the tuner
element.
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This subclass is indented under subclass 20. Subject matter wherein the motor is connected to the variable
tuning unit through a clutch device which is operated by the motor
control circuit.
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This subclass is indented under subclass 20. Subject matter wherein the motor is controlled by a relay
device.
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This subclass is indented under subclass 24. Subject matter in which plural relays are used to control the motor circuit. | |
This subclass is indented under subclass 17. Subject matter in which the electromagnetic operator is
provided with a linkage device for connecting the operator to a
variable tuning unit of a resonant circuit and a control means for
automatically operating the electromagnetic operator so as to tune
the resonant circuit to its optimum operating point and to maintain
the circuit at that point by regulating the adjustment of the variable
tuning unit to compensate for variations in the tuned circuit or
in the frequency of the signal wave to which the circuit is tuned.
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This subclass is indented under subclass 26. Subject matter in which the linkage device between the electromagnetic
operator and variable tuning unit is a mechanical coupling element
or tool which is adapted to be connected to or disconnected from
the tuning element.
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This subclass is indented under subclass 26. Subject matter in which the electromagnetic operator control
circuit is responsive to or requires two or more signal sources
in order to properly center the resonant circuit.
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This subclass is indented under subclass 17. Subject matter wherein the electromagnetic operator is connected
to or controlled by a position or sensing means which acts to position
the variable reactance tuning unit in a predetermined position upon
being actuated.
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This subclass is indented under the class definition. Subject matter wherein the tuner is combined with some form
of electrical indicator which operates in such a manner as to give
an indication of whether or not the tuned circuit is tuned for maximum
output signal strength or peak resonance.
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This subclass is indented under subclass 30. Subject matter wherein the resonance indicator is a meter, such as, for example, a galvanometer. | |
This subclass is indented under subclass 31. Subject matter wherein the meter is combined with an optical
and/or shading device.
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This subclass is indented under subclass 30. Subject matter wherein the resonance indicator is of the
cathode ray tube.
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This subclass is indented under subclass 33. Subject matter wherein the cathode-ray tube has an annular
anode coated with fluorescent material surrounding an emissive center
cathode and a control electrode for varying the width of the discharge
between the cathode and anode so that as the potential of the control electrode
varies the width of the nonluminous portion of the anode varies.
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This subclass is indented under subclass 34. Subject matter wherein plural nonluminous portions are produced on the fluorescent anode material. | |
This subclass is indented under subclass 30. Subject matter wherein the resonance indicator is an electric
lamp.
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This subclass is indented under subclass 36. Subject matter wherein the resonance indicator lamp is of
the gaseous glow discharge tube type, such as, for example, a neon
lamp.
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This subclass is indented under the class definition. Subject matter in which a reactance element or elements
of a tuned circuit is wound on a core and is adapted to be unwound
therefrom, as on a second core, to change the reactance values of
the tuned circuit.
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This subclass is indented under the class definition. Tuning devices in which the tuner is combined with structure
other than tuner structure or some change in tuning structure and/or design
which improves the operation of the tuner and which is not otherwise
classified.
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This subclass is indented under the class definition. Subject matter wherein some resistance value is built into
or adapted to be inserted into or removed from a tuned circuit to
thereby vary the "Q" or damping of the circuit.
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This subclass is indented under the class definition. Subject matter wherein the inductance and capacitance of
the tuned circuit is of the distributed parameter type and is adapted
to have the mean resonant frequency of the circuit adjusted in discrete,
distinct steps; or where a plurality of tuned circuits are ganged
together either mechanically and/or electrically so as
to have their means resonant frequency adjusted in unison.
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This subclass is indented under subclass 41. Subject matter wherein two or more distributed parameter
type tuners are electrically and/or mechanically interlinked
so as to be simultaneously adjusted over a given frequency range.
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This subclass is indented under subclass 42. Subject matter wherein the distributed parameter type tuners
are adjusted by a shaft operator.
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This subclass is indented under subclass 41. Subject matter wherein the inductance and/or capacitance
having the distributed reactance is adapted to be deformed, as by
bending, twisting or collapsing, so that the distributed reactance
is varied thus varying the frequency of the tuned circuit.
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This subclass is indented under subclass 41. Subject matter in which at least a portion of the capacitance
necessary to tune the resonant circuit is furnished by a lumped
capacitor.
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This subclass is indented under the class definition. Subject matter wherein a tuned circuit includes a lumped
deformable type tuning element or elements together with the necessary mechanical
structure for modifying the shape of the tuning element, as by changing
the physical shape of the tuning element or elements to thereby
change the reactance of the tuned circuit.
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This subclass is indented under the class definition. Subject matter wherein an element or elements of at least
one tuned circuit is modified or substituted by a switching operation
to thereby effectively change the resonant frequency to which the
circuit is tuned.
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This subclass is indented under subclass 47. Subject matter wherein the switch type tuner is constructed so as to have a contact terminal or plate which is adapted to contact or approach a second terminal or plate held on a stationary portion of the tuner unit, the contact terminals or plates of the tuner being constructed so as to allow a rocking movement between the movable and stationary contacts, thus varying the resonant frequency of the tuned circuit without breaking electrical contact between the stationary and movable contacts. | |
This subclass is indented under subclass 47. Subject matter wherein the element or elements of the tuner
are carried upon a flat circular plate or disk type support with
the plate or disk support revolving about its center axis and thereby switching
the element or elements into or out of a circuit in a predetermined
order.
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This subclass is indented under subclass 47. Subject matter wherein the switching unit consists of a
rotatable drum or cylinder having a plurality of individual components
or tuning elements secured in position about the periphery of the
drum or cylinder, the components or tuning elements being connected
to contact elements which are also carried on the periphery of the
drum or cylinder, and rotating means to move the drum or cylinder
about its longitudinal axis to thereby bring the contacts located
on the drum or cylinder into contact with stationary contacts located
on a support member adjacent a portion of the surface of the drum
or cylinder.
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This subclass is indented under subclass 50. Subject matter in which the tuner has means associated therewith
to give fine tuning or adjustment to the tuned circuit.
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This subclass is indented under subclass 47. Subject matter in which the switching means used to vary
or change the frequency setting or band of frequencies to which
the tuner is resonant is operated by the adjustment or movement
of a variable tuning means such as a variable capacitor.
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This subclass is indented under subclass 52. Subject matter in which the switch is of the rectilinearly
movable or reciprocating contact type.
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This subclass is indented under subclass 47. Subject matter in which the switch is of the rectilinearly
movable or reciprocating contact type.
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This subclass is indented under subclass 47. Subject matter in which the element or elements substituted
by the switching operation consists of a plurality of capacitors.
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This subclass is indented under subclass 47. Subject matter in which the element or elements substituted
by the switching operation consists of a plurality of inductors.
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This subclass is indented under subclass 56. Subject matter in which the tuner has means associated therewith
to give fine tuning or adjustment to the tuned circuit.
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This subclass is indented under subclass 57. Subject matter wherein the vernier tuning means is a variable
capacitor.
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This subclass is indented under subclass 47. Subject matter in which a selector switch is operated in
such a manner as to introduce into a selector circuit an independent
set of frequency determining parameters consisting of a tuned transformer
circuit.
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This subclass is indented under subclass 59. Subject matter wherein the tuned circuit or a portion thereof is short circuited by a switching device to thus vary the frequency or band of frequencies at which the circuit will resonate. | |
This subclass is indented under the class definition. Subject matter wherein a variable tuned circuit or circuits
consists of at least two or more windings which are so constructed
or located that the windings are mutually coupled together by the
magnetic field or the electric and magnetic fields created by and
existing between the windings, with means being present in the circuit
or circuits to vary the electrical and/or magnetic coupling
existing between the windings so as to cause or effect a change
in the mean resonant frequency and thus vary the tuning of the circuit
or circuits.
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This subclass is indented under subclass 61. Subject matter wherein the variable mutual inductance device
consists of two coils connected in series and so mounted that one
coil can be rotated within the magnetic field or the electric and
magnetic field of the other.
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This subclass is indented under subclass 61. Subject matter in which a plurality of coils or windings
are so arranged as to have a core common to all the coils or winding
with the core, when moved, causing the inductance of each of the
plural coils or windings to vary simultaneously.
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This subclass is indented under the class definition. Subject matter wherein the inductor and capacitor are electrically connected in series so as to form a tuner of the series resonant type, the impedance of the resulting two terminal series network being a minimum at resonance. | |
This subclass is indented under the class definition. Subject matter in which at least an inductor and capacitor
are electrically connected together to form a parallel tuned circuit,
both the inductor and capacitor being of the continuously variable
type.
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This subclass is indented under subclass 65. Subject matter wherein the inductor and capacitor of the
tuned circuit have a common mutually variable inductance and capacitance structure,
the adjustment of which effects both the inductance and capacitance
value of the tuned circuit simultaneously.
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This subclass is indented under subclass 66. Subject matter wherein the tuner includes a tuning unit
having a variable capacitor type configuration with the self inductance
of the mechanical structure of the capacitor and the capacitance
of the capacitor forming a tuned circuit, the rotational displacement
of the rotor of the variable capacitor simultaneously varying both
the capacitance and the inductance of the unit.
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This subclass is indented under subclass 66. Subject matter wherein the tuning element which is mutually common to both the inductor and capacitor portion of the parallel tuned circuit is movable rectilinearly in respect to the inductor and capacitor. | |
This subclass is indented under subclass 65. Subject matter wherein the inductor and capacitor are so
constructed or mechanically connected together that simultaneous
variation of the inductance and capacitance values occurs when the
tuner is adjusted or tuned.
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This subclass is indented under subclass 69. Subject matter wherein the variable inductor element is
of the adjustable core type.
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This subclass is indented under the class definition. Subject matter wherein a parallel tuned circuit consists
of a capacitor of fixed capacitance value and a variable inductor,
the inductance value of which may be varied over a given range in
order to tune the the circuit over a range or band of frequencies.
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This subclass is indented under subclass 71. Subject matter wherein a movable contact is adjustable along
the length of the inductor element to thereby vary the effective
inductance of the inductor and thus tune the circuit over a range
or band of frequency.
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This subclass is indented under subclass 72. Subject matter in which the movable contact element does
not come into direct electrical contact with the inductor coil but
is capacitively coupled thereto.
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This subclass is indented under subclass 71. Subject matter wherein the frequency of the tuned circuit
is varied by moving a core of material in the magnetic or the electric
and magnetic field of an inductor element.
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This subclass is indented under subclass 74. Subject matter wherein the inductor is formed and/or
wound in an irregular or varying configuration as, for example,
a tapered winding.
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This subclass is indented under subclass 74. Subject matter wherein the core is of a particular shape
and/or constructed out of a particular type material or
materials.
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This subclass is indented under subclass 74. Subject matter wherein a plurality of variable inductor
tuners of the adjustable core type are so constructed and/or
mechanically interlinked as to move in unison thereby adjusting
together the respective tuning cores of each tuned circuit.
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This subclass is indented under the class definition. Subject matter wherein a parallel tuned circuit consists
of an inductor of fixed inductance value and a tuning capacitor,
the capacitance value of which may be varied over a given range
in order to tune the circuit over a range or band of frequencies.
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This subclass is indented under subclass 78. Subject matter comprising a tuner having a variable capacitor
which is so constructed and/or driven by an adjusting means
that if the frequency variation or change produced in the tuner
by the adjustment of the variable capacitor is plotted along the
abscissa and the movement or variation of the variable capacitor
is plotted along the ordinate of a graph, the line produced would
be linear.
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This subclass is indented under subclass 78. Subject matter in which the variable capacitor is so constructed that the spacing between the plates of the capacitor may be varied to thus change the capacitance of the capacitor as, for example, by placing a series of resiliently biased stacked plates under a variable pressure. | |
This subclass is indented under subclass 78. Subject matter wherein the variable capacitor is of the
sliding plate type which variably interleaves in a rectilinear manner.
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This subclass is indented under subclass 78. Subject matter in which the variable capacitor plates are
shaped and/or arranged in a particular or special manner
to give a special tuning operation.
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This subclass is indented under subclass 78. Subject matter wherein two or more variable capacitors are
mechanically interlinked to move in unison.
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This subclass is indented under subclass 78. Subject matter wherein the variable capacitor has a significant
operating or driving means such as, for example, a gear train or
cam operator.
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This subclass is indented under the class definition. Subject matter wherein the tuner device is substantially
completely covered or surrounded by an enclosure and/or
a barrier or screen is present for shielding at least a part of the
tuner device from external electrical, magnetic or electromagnetic
fields, or for protecting part of the tuner device from such fields originating
in another part of the circuit, or for preventing the tuner device
from emanating such fields or waves containing such fields.
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86 | WITH INDICATOR |
This subclass is indented under the class definition. Mechanisms which include a device for conveying information
as the particular band or position within a band of frequencies
to which a tuned circuit is adjusted. Usually the indicator
is pointer and scale type which is attached to the movable shaft
of an adjustable tuner unit.
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This subclass is indented under subclass 86. Subject matter in which the indicator is adapted to indicate
in which band of frequencies a tuner is operating where the tuner
is of the type which is adapted to cover a plurality of such bands.
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This subclass is indented under the class definition. Subject matter in which means, such as a detent or electrical
braking circuit, is provided to check or arrest the motion of the
tuner adjusting shaft or device at a preset position or at a given
time.
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This subclass is indented under the class definition. Subject matter which is not provided for in any of the preceding subclasses in this class and which is not otherwise classified. | |
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |