This is the generic class for the structure of inductor devices
of the passive type.
SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A. INDUCTOR DEVICES HAVING CAPACITANCE OR RESISTANCE:
1. With Capacitance:
As pointed out above, this class provides for inductor devices
wherein the inherent capacitive reactance of the inductor does not
resonate with the inductance of the inductor within the frequency
range of the electric current adapted to flow therethrough. Where
the inductance of the inductor resonates with its inherent capacitive
reactance, the device is excluded from this class and will be found
in Class 333, Wave Transmission Lines and Networks, subclasses 24+,
as a coupling network, (e.g., filter, delay networks, equalizers,
coupling transformers), or in Class 334, Tuners, appropriate subclasses
as a tuner.
2. With Resistance:
This class provides for all inductor devices having appreciable
inductive reactance regardless of the value of the inherent resistance
of the device within the frequency range of the electric current
adapted to flow therethrough. This class does not provide for resistors which
may have an incidental or undesired inherent inductive reactance
and which are designed to be used only as resistive impedances.
For such excluded resistors, see Class 338, Electrical Resistors,
especially subclasses 61+ for resistors with inductance
reducing means.
3. Inductor Devices in Combination with Separate Capacitors
or Resistors:
This class does not provide for the combination of inductor
devices and separate capacitors and/or resistors irrespective
of whether such combined devices are in mere structural arrangement
or in circuit arrangement with each other. For the excluded subject
matter, see Class 361, Electricity: Electrical Systems and Devices, subclasses
268+, especially subclass 270 for the combination of a
transformer and capacitor, subclasses 331+ for the structure
of switchboards and analogous devices including the structural combination
of plural diverse impedance elements, e.g., inductors and capacitors, inductors
and resistors, capacitors and resistors or any combination of two
or more of such elements for which provision has not been made elsewhere.
See also the search notes below for other classes providing for inductor,
inductor and capacitor or resistor combinations.
B. INDUCTOR DEVICE STRUCTUIRE CLASSIFIED ELSEWHERE:
1. Stationary Inductor Devices:
Inductor device coil and core structure will be found in Class
361, Electricity: Electrical Systems and Devices, subclasses 268+ for
induction or spark coils with capacitors and/or circuit
makers and breakers of the periodically operated type, subclasses
331+.
2. Transmission Line Sections with Distributed Parameters:
Transmission line sections where the line has distributed inductance
and capacity with or without effective distributed resistance are
classified in Class 333, Wave Transmission Lines and Networks, subclasses
219+ and 245+. Note that in subclasses 245+ are
resonant long line sections (i.e., with distributed inductance and capacity)
which are designed to be operated at other than resonant frequency
for producing the effect of an inductance. For example, a short-circuited
quarter-wave length line operated at less than resonant frequency
or an open-circuited line greater than a quarter-wave length but
less than a half wave length of wave energy acts as an inductance.
Also note that subclasses 24+ of Class 333 contains some
patents relating to adjustable inductor devices which have an appreciable
inherent capacity.
3. Electromagnets with Armatures:
Electromagnets of the tractive type which include an armature
for converting electrical energy into mechanical work through the
agency of electromagnetic induction are classified in Class 335,
Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,
subclasses 220+ for electromagnets with armatures. Note
that also, Class 335, Electricity: Magnetically Operated Switches,
Magnets, and Electromagnets, subclasses 2+ provides for
electromagnetically actuated electric switches.
4. Loading Coils:
Class 178, Telegraphy, subclass 46, provides for inductor
coil structure designed for use in long electric wave transmission
lines to modify the electric wave propagation characteristics of
the lines.
5. Telephone Inductor Coils:
Class 379, Telephonic Communications, subclasses 443+ and
the subclasses specified in the notes thereto provide for inductor
coils combined with the structure of telephone instruments.
6. Loop Antennas:
Class 343, Communications: Radio Wave, subclasses 700+,
and especially subclasses 726, 728, 741+, 748, 764, 788,
842, 855, and 866+, provides for the structure of inductor
coil devices for radiating or intercepting radio wave energy in
free space.
7. Dynamo Electric Machines:
Class 310, Electrical Generator or Motor Structure, appropriate
subclasses for the structure of electric motors and generators including
synchronous condensers, synchronous motors, induction motors, dynamotors, rotary
converters, metadynes, balancer sets and the like.
8. Electromagnetic Electro-acoustical Wave Transducers and
Sound Pick-ups:
Devices which include an electromagnetic device for converting
electrical energy to sound energy, or vice versa, or which are used
in electrically recording and/or reproducing sound records
or which are used to convert the vibrations of a musical instrument
into modified electric currents, are classified as follows:
Music instrument transducers, Class 84, Music, subclasses
725 to 729.
Audible electrical signal producers such as bells, whistles,
etc., Class 340, Communications: Electrical, subclasses 384+.
Magnetic recording or reproducing devices, Class 360, Dynamic
Magnetic Information Storage or Retrieval, subclasses 110+.
Electro-mechanical sound recording and/or reproducing devices
having a stylus for actuating, or actuated by, the electromagnetic
device, Class 369, Dynamic Information Storage or Retrieval, subclasses
146+.
Telephone transmitters or receivers, Class 379, Telephonic
Communications, subclasses 419-427.
9. Signal Transmitters Using Variable Inductor Devices:
For devices designed to be selectively actuated to transmit
an undulating current for signaling purpose and which include means,
such as a pendulum, reed, or similar vibrating member to vary the
inductance of a variable inductor device, see References to Other
Classes, below.
10. Goniometers:
For Gonionmeters see Class 343 in References to Other Class,
below.
11. Inductor Devices with Rotatable Element Recited By Name
Only in Combination with Positioning Means:
Class 74, subclasses 10+ and the subclasses specified
in the notes thereto provides for the combination of a transformer
or inductive reactor having an element (e.g., coil or core) designed
to be angularly movable in combination with specific mechanical
means for rotating a shaft for positioning the movable element,
where no significant structure of the transformer or reactor other
than that it has an angularly movable part is recited in the claim.
Where the means for moving the shaft is not solely mechanical see
the search notes to subclass 10 of Class 74 for the other classes
which provide for the combination. Where significant reactor or
transformer structure is claimed, classification is in this class
(336).
12. Inductor Devices or Systems Utilizing High Temperature
Superconducting Material:
For Inductor Devices or Systems Utilizing High Temperature
Superconducting Material, see Class 505 in References to Other Classes,
below.
C. PATTERN CONTROLLED VARIABLE INDUCTOR DEVICES AND PATTERN
TRACING DEVICES WHICH ACTUATE VARIABLE INDUCTOR DEVICES:
In many of the arts, especially in the machine tool arts, there
are machines and apparatus designed to be controlled in accordance
with a pattern. The control pattern may be facsimile of the article
to be made or may be a code-type pattern or other type of record.
Many of these apparatuses and machines disclose that the pattern
actuates a variable inductor device to modify the electric current
in the control system. A substantially complete listing of all
the arts which involve pattern control may be found in the search
notes to Class 178, Telegraphy, subclass 3. Also see this class
definition with reference to variable inductor devices designed
for use in reproducing sound records (e.g., phonograph pick-ups).
See References to Other Classes, below, for classes and subclasses
that are considered to be most likely to include pattern controlled
variable inductors.
D. VARIABLE INDUCTOR DEVICES OPERATED BY A CONDITION SENSITIVE
MEANS:
This class provides for adjustable inductor devices where
the movement of the inductance varying means is operated by a device
which responds to a condition, such as pressure responsive inductor
devices, temperature responsive inductor devices, etc., in subclasses
30+.
There are many classes which provide for such condition responsive
devices in combination with the electrical system. See above for
the classification of adjustable inductor devices which have their
inductance varied in response to sound waves or which are designed
for use in reproducing sound from a sound record, or which are designed
to convert the vibrations of a musical instrument to modified electric
current. Also see above for a reference to pattern controlled variable
inductor devices.
For other classes which should be searched for condition responsive
inductor device systems see References to Other Classes, below.
E. ELECTROMAGNETS AND PERMANENT MAGNETS:
Electromagnets and permanent magnets of general application
and electromagnet coils and cores, per se, are classified in Class
335, Electricity: Magnetically Operated Switches, Magnets, and
Electromagnets, subclasses 209+ for general application
of magnets and electromagnets, electromagnetic coils and cores,
per se, subclasses 285+ for lifting and holding electro
and permanent magnets (e.g., magnetic chucks). See 414, Material
or Article Handling, subclasses 606 and 737 for the provision of
a load-engaging magnet on certain types of load raising or lowering
devices, and Class 294, Handling: Hand and Hoist-Line Implements,
subclass 65.5 for hand and hoist-line implements having a magnetic
means for holding or attaching the material to be lifted to the
lifting handle or hoist-line.
Electromagnetic devices for heating (e.g., by induction heating)
are classified in Class 373, Industrial Electric Heating Furnaces,
subclasses 138+ when combined with furnace structure, and
Class 219, Electric Heating, subclasses 600+ for inductive
heating, subclasses 678+ for microwave heating, and subclasses
764+ for capacitive dielectric heating.
Class 128, Surgery, subclasses 1.3+ provides for
electromagnetic devices for surgical purposes, including magnetic
probes and such magnetic devices as are designed to induce electric
currents in the human body.
F. INDUCTOR DEVICE SYSTEMS:
1. Current, Voltage And/Or Phase Control Systems:
This class does not provide for systems which include an inductive
regulator device as a part thereof. Class 323, Electricity: Power
Supply or Regulation Systems, is the generic class for systems for
controlling the voltage and/or current in the system and/or
for systems for controlling the phase angle between the voltage
or current in the system. See the search notes to the class definition
of Class 323 for the other classes which provide for electrical
regulating systems and for systems which include as a part thereof
a regulating device.
2. Miscellaneous Transformer and Inductor Device Systems:
Class 323, Electricity: Power Supply or Regulation Systems,
is the generic class for transformer and impedance systems. See
subclass 355 and the subclasses specified in the notes thereto for
the miscellaneous inductive reactor device systems.
3. Inductive Loaded Transmission Lines:
Class 178, Telegraphy, subclass 45 is the miscellaneous subclass
for inductivity loaded transmission line systems of the type used
signaling systems, and Class 379, Telephonic Communications, subclasses
414+ provide for inductively loaded telephone lines.
4. Inductively Coupled Signaling Systems:
For signaling systems provided with means for transmitting
the signaling energy through space by electromagnetic induction
(e.g., using transformer coils) see References to Other Classes,
below.
5. Transmitting Power To Vehicles:
For transmitting power to vehicles, see References to Other
Classes, below.
G. ANTI-INDUCTIVE DEVICES AND SYSTEMS:
For Anti-Inductive Devices and Systems, see References to
Other Classes, below.
Metal Deforming,
subclass 7 for a metal shaping machine controlled by a pattern-actuated senser
means, and subclass 81 for a direct pattern controlled sheet metal
spinning machine. (Lines With Other Classes and Within This Class,
C, Pattern Controlled Variable Inductor Devices and Pattern Tracing
Devices Which Actuate Variable Inductor Devices, above.)
Measuring and Testing, appropriate subclasses, for miscellaneous apparatus and
systems for making nonelectrical, nonchemical and nonoptical measurements
and tests. In Class 73, the sensing or measuring means may actuate
an electrical device, as a resistance or inductor device. In Class
73, the apparatus and systems are classified on the basis of the
measurement or test made rather than upon the basis that electrical
means are used. See
subclasses 763+ for stress or strain measuring apparatus wherein
the value of an electric current is modified (such as by varying
an adjustable inductor), particularly subclass 779 for such apparatus
with specified inductive sensor structure, subclass 301 for liquid
level or depth gauges of the hydrostatic pressure type having an
electrical means (such as a variable inductor) actuated by the pressure,
subclass 308 for float type liquid level or depth gauges which actuate
an electro-responsive device, subclass 313 for other type liquid
level or depth gauges which actuate an electro responsive device, subclasses
722 and 728 for fluid pressure gauges which include pressure responsive means
for actuating a variable inductor device. (See Lines With Other
Classes and Within This Class, D, Variable Inductor Devices Operated By
a Condition Sensitive Means, above.)
Machine Element or Mechanism,
subclass 5.6 for gyroscopes with means (including electrical devices)
controlled by the gyroscope for sensing the position of the gyroscope
and/or its gimbals. (See Lines With Other Classes and Within
This Class, D, Variable Inductor Devices Operated By a Condition
Sensitive Means, above.)
Turning,
subclasses 11.1+ , for pattern controlled turning apparatus (e.g.,
lathes). (Lines With Other Classes and Within This Class, C, Pattern
Controlled Variable Inductor Devices and Pattern Tracing Devices
Which Actuate Variable Inductor Devices, above.)
Cutting,
subclass 71 , for cutting machine control devices which are
responsive to tape or card-carried indicia. (See Lines With Other Classes
and Within This Class, D, Variable Inductor Devices Operated By
a Condition Sensitive Means, above.)
Ammunition and Explosives, appropriate subclasses for firing devices for explosive
devices which are actuated by the effect of a magnetic field, see
subclasses 390+ for marine type drop bombs with such ignition means,
subclasses 416+ for marine mines with such firing devices,
subclass 427 for other mines with such firing devices and subclasses
209 and 211 for the miscellaneous explosive devices with such firing
devices. (See Lines With Other Classes and Within This Class, D,
Variable Inductor Devices Operated By a Condition Sensitive Means,
above.)
Coating Apparatus,
subclasses 211+ and 323 for pattern controlled coating apparatus.
(Lines With Other Classes and Within This Class, C, Pattern Controlled
Variable Inductor Devices and Pattern Tracing Devices Which Actuate
Variable Inductor Devices, above.)
Wood Turning, the subclasses indented under the title "copying" and
subclasses 21 , 22, 24, 27+, 30, 37, 38+, 41,
and 43+ for pattern controlled wood-turning machines.
(Lines With Other Classes and Within This Class, C, Pattern Controlled
Variable Inductor Devices and Pattern Tracing Devices Which Actuate
Variable Inductor Devices, above.)
Electricity: Conductors and Insulators,
subclasses 32+ for conductor systems having means for reducing
or preventing the detrimental effects due to either the self inductance
of a single conductor or mutual inductance between plural conductors.
See the search notes to these subclasses for related fields of search.(Lines
With Other Classes and Within This Class, G, Anti-Inductive Devices
and Systems)
Telegraphy,
subclass 69 for telegraph systems with means, such as an inductor
device, to prevent or reduce inductive effects.(Lines With Other
Classes and Within This Class, G, Anti-Inductive Devices and Systems)
Telegraphy,
subclasses 47+ for such devices used in telegraph multiplex systems
and for the multiplex systems. (See Lines With Other Classes, Signal
Transmitters Using Variable Inductor Devices.)
Electricity: Transmission to Vehicles,
subclass 10 for induction systems for transmitting electric
power to a vehicle. (See Lines With Other Classes, F, Inductor
Device Systems, above.)
Classifying, Separating, and Assorting Solids,
subclass 212 , and 213+ for apparatus for separating
solid materials and assorting or segregating them according to their
diamagnetic or magnetic properties, see subclass 212 for the apparatus
designed to operate due to the diamagnetic properties and subclasses
213+ for the apparatus designed to operate due to the magnetic
properties. (See Lines With Other Classes and Within This Class,
D, Variable Inductor Devices Operated By a Condition Sensitive Means,
above.)
Railway Switches and Signals,
subclass 8 , 63, 194, for railway switch and signal systems
having inductive means for transmitting the signals to or from moving
trains.(See Lines With Other Classes and Within This Class, Inductor Devices
Systems, 4, above.)
Metallurgical Apparatus,
subclasses 58+ for pattern controlled metal cutting torches (e.g., oxy-acetylene
torches). (Lines With Other Classes and Within This Class, C, Pattern
Controlled Variable Inductor Devices and Pattern Tracing Devices
Which Actuate Variable Inductor Devices, above.)
Electrical Transmission or Interconnection Systems,
subclasses 89+ for systems having means for preventing induction
or coupling with other electrical systems.(Lines With Other Classes
and Within This Class, G, Anti-Inductive Devices and Systems)
Electricity: Measuring and Testing,
subclasses 1+ for electrically operated ore detectors (e.g.,
explosive mine detectors) which use an inductor device as the sensing
means (e.g., the inductance is varied by the presence of a magnetic
body), and subclasses 34+ and 59 for miscellaneous electrical
testing apparatus using a variable inductor device as the sensing
element (e.g., the material to be tested varies the inductance of
the inductor device and magnetic field strength testing). (See
Lines With Other Classes and Within This Class, D, Variable Inductor
Devices Operated By a Condition Sensitive Means, above.)
Communications: Electrical,
subclasses 195+ for telemetering systems utilizing variable inductor
devices (e.g., flux valve) as condition sensing or transmitter means,
and subclasses 500+ for signaling systems (e.g., alarms)
automatically responsive to a condition. (See Lines With Other
Classes and Within This Class, D, Variable Inductor Devices Operated
By a Condition Sensitive Means, above.)
Communications: Electrical,
subclass 825 for selective signaling systems, some of which (note
particularly Classes 825.70-825.78) may utilize variable inductor
devices as transmitters, and subclasses 870.31+ for telemetering systems
which utilize variable inductor devices. (See Lines With Other
Classes, Signal Transmitters Using Variable Inductor Devices.)
Communications: Radio Wave Antennas,
subclass 431 and 441 for goniometer devices for use in direction
finding radio systems. A goniometer is an inductor device with
three windings, two of which are fixed, and one of which is movable,
so that the two fixed coils may induce a current into the movable
coil. See this Class, 336, subclasses 115+ for similar
devices used as induction regulators. (See Lines With Other Classes
and Within This Class, Goniomters.)
Thermal Measuring and Testing,
subclass 184 for a thermometer having a reactive sensing element,
and subclass 188 for thermometer with a mechanical sensor varying
an electrical signal. (See Lines With Other Classes and Within
This Class, D, Variable Inductor Devices Operated By a Condition
Sensitive Means, above.)
Telephonic Communications,
subclasses 251+ and 352+ for such devices designed for
use as calling devices for telephone systems. (See Lines With Other
Classes, Signal Transmitters Using Variable Inductor Devices.)
Telephonic Communications,
subclass 55.1 for telephone systems. (See Lines With Other Classes
and Within This Class, Inductor Devices Systems, 4, above.)
Telephonic Communications,
subclass 398 and 415 for telephone systems having means, such as
an inductor device, to prevent or reduce inductive effects. (Lines
With Other Classes and Within This Class, G, Anti-Inductive Devices
and Systems)
Gear Cutting, Milling, or Planing,
subclasses 2+ for a pattern controlled gear cutting machine;
subclasses 79+ for a pattern controlled milling machine;
subclasses 125+ for a templet or tracer adapted to be used
with a milling machine; and subclasses 289+ for a pattern
controlled planing machine. (Lines With Other Classes and Within
This Class, C, Pattern Controlled Variable Inductor Devices and
Pattern Tracing Devices Which Actuate Variable Inductor Devices,
above.)
Stock Material or Miscellaneous Articles,
subclasses 544+ for stock materials, e.g., of indefinite length,
which are all metal or have adjacent metal components, particularly
subclasses 592 for stock material in the form of a helix or having
a helical component.
Abrading,
subclass 237 for a pattern controlled, rotary type of abrading
machine. (Lines With Other Classes and Within This Class, C, Pattern
Controlled Variable Inductor Devices and Pattern Tracing Devices
Which Actuate Variable Inductor Devices, above.)
Telecommunications,
subclasses 67.11 through 67.7for measuring a testing devices used for testing
the operating conditions of the systems; and subclasses 226.1-226.4
for measuring or testing devices for particular use with radio receivers.
(See Lines With Other Classes and Within This Class, D, Variable
Inductor Devices Operated By a Condition Sensitive Means, above.
Superconductor Technology: Apparatus, Material,
Process,
subclasses 150+ for devices or systems utilizing high temperature
(Tc > 30 K) superconducting material,
particularly subclasses 211+ for inductors using high temperature
superconducting material.
Surgery,
subclasses 407+ for electric diagnostic instruments for use with
humans and which include an inductor device designed to have its inductance
varied by a condition. (See Lines With Other Classes and Within
This Class, D, Variable Inductor Devices Operated By a Condition
Sensitive Means, above.)
SECTION IV - GLOSSARY
ADJUSTABLE INDUCTOR
A passive inductor wherein the inductor device includes a
movable element which may be adjusted to different positions or
adjusted to vary its physical dimensions to change the effective
inductance from one value to another.
Examples of such movable elements are: a tap changing switch,
a distortable coil or core, coil length varying means, a movable
core and movable coupled coils.
Inductor devices designed to change inductance (1) as a function
of the current flowing through the inductor winding, or (2) in accordance
with a magnetic bias applied to the core of the device, or (3) as
a function of the ambient temperature of the device, and wherein
no physical elements of the inductor are moved to effect such change
in inductance, are not considered adjustable under the above definition.
Such variable inductors will be found in subclasses 155+ of
this class for magnetically saturable or high leakage reactance
type devices and subclass 179 of this class for devices responsive
to changes in ambient temperature.
CLOSED COIL
is a coil which is not designed to be connected to an external
source or to a circuit, but which has the ends of the coil connected
together so that a magnetic field can induce current therein which
current flows in the closed path formed by the closed coil and generates
a magnetic field in opposition to the current inducing field.
COIL
A conductor which creates a magnetic field due to the flow
of current therein. It may be formed into one or more convolutions
or turns, or have only a partial turn, or be straight.
COIL AXIS
That path along which a unit magnetic pole would experience
a maximum force when a current is caused to flow in the coil conductor.
For example, in a long, uniform, single layer cylindrical coil,
the coil axis corresponds to the geometrical axis of the coil.
CONDUCTOR
A body designed to have an electric current flowing therein.
For the purpose of classification, a magnetic core is distinguished
from a conductor. A conductor is designed to be connected to a
source of electromotive force, or to have induced therein a voltage
by inductive coupling from a current carrying conductor. A conductor,
when used as a coil, and connected either directly or by mutual
inductance to a source of electromotive force, creates a magnetic
field due to the flow of current in the conductor. See the definition
of core.
CORE
A magnetic or magnetizable body having a magnetic permeability
greater than one. The proximate purpose of a core is to increase
the inductance of an associated coil by increasing the number of
magnetic flux interlinkages of the coil. Although the material
of the core is electrically conductive such electrical conductivity
is usually minimized by using magnetic material of high resistivity
in the form of bundles of fine wires, stacks of thin laminations
insulated from each other or a suspension of iron powder in an electrically
insulating binder.
INDUCTIVE COUPLING
The coupling between separate coils or windings due to the
electromagnetic induction between the coils or windings.
INDUCTOR
An impedance device comprising a coil means with or without
core means for introducing inductance into an electric circuit and
wherein the inherent capacitive reactance thereof does not resonate
with the inductance of the coil within the frequency range of the
electric current adapted to flow therethrough. Both transformers and
inductive reactors are included within the meaning of "inductor".
Excluded are inductor devices that are designed to do more than
introduce inductance into a circuit. Examples are: inductor devices
particularly designed to produce a magnetic field which radiates energy
which is not returned to the device, or devices designed to produce
external mechanical work by electromagnetic action.
MAGNETIC BODY
Same as "CORE" above.
PASSIVE INDUCTOR
An inductor device which contains no source or sink of energy
(i.e., an active element). A "sink of energy" as used in this definition
is an element or network which is designed to absorb energy, by
converting electrical energy into another form of energy. Excluded,
therefore, are variable or adjustable inductance devices in which
the change in inductance is effected, at least in part, by an active
element such as, by way of example, continuously rotating machinery
(i.e., synchronous or asynchronous phase modifier or phase advancer machines)
or reactance tube systems having space discharge devices with electrode
biasing potential sources.
TRANSFORMER
An inductor having a plurality of coils or windings in mutually
inductive relation.
WINDING
A coil or plurality of coils which are interconnected,
or designed to be interconnected, having terminal means adapted
to be connected to an external source of current, to an output or
load circuit, or to some other circuit.
This subclass is indented under the class definition. Inductor devices comprising plural inductor means arranged
structurally and/or by internal connection for use in a
two or more phase electrical system.
(1)
Note. The claims must limit the device to use in a polyphase
system by including some structure or electrical connection which
is not of general utility but is specifically for use in a polyphase
system to be classified herein.
(2)
Note. The search should extend to the appropriate subclasses
below for inductor structure which may be used with polyphase current
but which is of generally utility (e.g., multiple coil reactors and
transformers with plural primary and secondary windings).
Electricity: Power Supply or Regulation Systems, appropriate subclasses for systems in which a single source of
supply is connected to a single output circuit and the system includes means
for controlling only the magnitude of the current, the voltage and/or the
phase angle between the current or voltage in the system. The single source
of supply may be a polyphase source. Also see
subclasses 44+ for miscellaneous polyphase transformer systems,
and subclasses 63+ for the miscellaneous polyphase impedance (including
inductive impedance) systems.
This subclass is indented under subclass 5. Subject matter wherein the inductor has means for adjusting
its inductance.
(1)
Note. The claims must limit the device to use in a polyphase
system by including some structure or electrical connection which
is not of general utility but is specifically for use in a polyphase
system to be classified herein.
(2)
Note. The search should extend to the appropriate subclasses
below for adjustable inductor structure which may be used with polyphase
current but which is of general utility (e.g., multiple coil reactors
and transformers with plural primary and secondary windings).
Electricity: Power Supply or Regulation Systems, appropriate subclasses, for systems in which a single
source of supply is connected to a single output circuit and the
system includes means for controlling only the magnitude of the
current, the voltage and/or the phase angle between the
current or voltage in the system. The single source of supply may
be a polyphase source.
Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets,
subclasses 220+ for structure of polyphase induction devices without inductance
varying means.
This subclass is indented under subclass 5. Subject matter wherein the claimed subject matter sets forth
specific electrical connections between plural inductor devices
which devices comprise a structural unit, so that the devices may
be incorporated in a plural phase system as an operating unit.
This subclass is indented under the class definition. Adjustable inductor devices in which the number of effective
turns of a coil is changed by winding or unwinding the conductor
forming the coil.
(1)
Note. The following is an illustrative example:
and 137+, for other adjustable inductor
devices wherein the inductive change is effected by altering the effective
length of the coil conductor by means other than winding and/or unwinding
the conductor.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
Electrical Resistors,
subclass 79 for mechanically variable electric resistors in
which the resistance value is varied by winding the resistance element
from one core to another.
Communications: Radio Wave Antennas,
subclasses 700+ for radio antennae in which the effective length of
the antenna is changed by winding the radiating element of the antenna
in or out.
This subclass is indented under the class definition. Adjustable inductor devices wherein the inductance variation
is attained by changing the physical shape of either the coil or
core or both, usually by physically displacing portions of the coil
or core relative to other portions of the coil or core respectively,
by bending, twisting or stretching.
(1)
Note. The following are illustrative examples:
(a) The core is deformed
(b) The coil is deformed
(2)
Note. This subclass includes variable inductor devices having
a core or core part formed of magnetostrictive material which material
exhibits a change in volume and in magnetizing properties when placed
under mechanical stress.
Oscillators,
subclass 157 for oscillator systems having a frequency determining
element comprising electromechanical resonator of the magnetostrictive
type.
Electrical Audio Signal Processing Systems and
Devices,
subclasses 150+ for electro-acoustical transducers of the magnetostrictive
type for use in telephony. Subclasses 150+ includes transmitters
and receivers.
WITH CONDITION-RESPONSIVE INDUCTANCE ADJUSTING MEANS (E.G., BY ELECTROMAGNET)
This subclass is indented under the class definition. Adjustable inductor devices where the change in inductance
is effected by adjusting or varying the inductance changing elements
of the device in response to a condition by condition sensing means
external to the device.
(1)
Note. The inductance varying element may be a thermally responsive
element (including those for temperature compensations; however,
where compensation is effected by the internal structure of the
device, classification is not herein but in subclass 179), a fluid
pressure diaphragm (e.g., a barometer), a centrifugal device, or
any other device or means responsive to a condition.
(2)
Note. The following are illustrative examples:
(3)
Note. See section VI of the class definition for a listing
of other classes which have condition response variable inductor
devices.
Electrical Transmission or Interconnection Systems, appropriate subclasses, for automatically controlled systems
of general application involving two or more sources or input circuits
and/or two or more output or load circuits.
Oscillators,
subclasses 65+ for oscillator systems combined with a device responsive
to an external physical condition and wherein a frequency determining
element (inductor or capacitor) of the oscillator is varied by the
condition sensing device.
Wave Transmission Lines and Networks,
subclasses 2+ and 17.1+ for wave transmission lines
and networks including an adjustable inductor with automatic control,
and subclasses 15 and 16 for pilot line and pilot current control
systems respectively which may include an adjustable inductor with
automatic control.
Tuners,
subclass 4 for magnetic responsive tuners; subclasses 5+ for tuners
responsive to an external condition; subclass 13 for tuners having
a saturable core type element and means to automatically center
the frequency of the circuit; subclass 16 for a tuner utilizing
a reactance tube tuner combined with automatic frequency centering
circuit means, and subclasses 26+ for a tuner having an
electromagnetic operator with automatic frequency centering means.
Telecommunications,
subclass 257 for receivers with automatic frequency control
and subclasses 150.1+ for particular frequency selection
means in radio receivers.
ADJUSTABLE BY MAGNETIC FORCE BETWEEN RELATIVELY MOVABLE PARTS OF THE INDUCTOR
This subclass is indented under the class definition. Adjustable inductor devices in which the inductance varying
element is adjusted in response to the magnetic force existing between
the magnetic elements (e.g., between the core and coil or between
coils) of the inductor device.
(1)
Note. Illustrative examples are:
(2)
Note. This subclass includes inductor devices such as are
used in constant current systems.
This subclass is indented under subclass 40. Subject matter in which the weight of one of the elements
which is moved by the magnetic force is counterbalanced at least
in part by a counterbalanced weight so that the magnetic force needed
to move the movable element is either less than or more than the
weight of the movable element.
(1)
Note. Where the inductor has a plurality of movable inductance
changing elements (e.g., a movable coil and a movable core) one
of the movable elements may be used as a counterbalance for the others
and vice versa.
Supports, appropriate subclasses for counterbalanced movable supports
of general application. Note
subclass 364 of Class 248 and also see the Index to the Manual
of Classification of Patents under the titles "Weights" and "Counterweights"
for counterbalance weights.
This subclass is indented under the class definition. Adjustable inductor devices in which means are provided
for showing the displacement of an inductance changing element of
the inductor device relative to some fixed part of the device.
Oscillators,
subclass 64 for oscillators having means for indicating the position
or setting of an adjustable frequency determining element of the oscillator,
such as a variable inductor or capacitor.
Communications: Electrical, appropriate subclasses for electrically actuated or controlled
signals and indicators, especially
subclasses 870.31+ for telemetric systems.
This subclass is indented under the class definition. Inductor devices wherein means are provided for modifying
or for controlling the temperature of the inductor device.
for inductor devices whose inherent construction
is such as to maintain their inductance at a constant value, or which
permits their inductance to vary in a predetermined manner with changes
in temperature of the device.
Refrigeration, appropriate subclasses for miscellaneous refrigeration
apparatus, particularly
subclasses 259.1+ for refrigeration means installed in structures
having other functions.
Heat Exchange, appropriate subclasses for heat exchange apparatus combined
with a device to be cooled or heated thereby, if no structure of such
device is included other than that necessary for cooperation with
the heat exchange device.
Electricity: Conductors and Insulators,
subclasses 15.1+ for a mere housing, casing or envelope for an electrical
device where no significant structure of the device is claimed with means
for modifying the temperature of the device.
Electrical Generator or Motor Structure,
subclass 16 and 52+ for reciprocating and rotary dynamoelectric machines,
respectively, with cooling or temperature modification means.
Electric Lamp and Discharge Devices: Systems, particularly
subclass 50 for combined structure of a space discharge device
and impedance means, which means may be an inductor, and which means
is constructed to modify the temperature of the load device.
Oscillates,
subclasses 69 and 70 for oscillator systems with means for modifying
or controlling the temperature of the oscillator or an element, such
as a tank circuit inductor, of the oscillator.
This subclass is indented under subclass 55. Subject matter in which the inductor device has a circumambient
liquid or gaseous insulating medium in contact with its coil or
core and wherein means, such as a pump or fan, is included to force
the medium to circulate for the purpose of effecting a heat exchange between
the medium and the inductor device.
Refrigeration, particularly
subclasses 304+ for material cooling means including a gas-liquid
contactor, subclasses 373+ for a cooler in which a liquid
contacts a discrete commodity, and subclasses 403+ for
a system for cooling a gas and controlling or directing it, e.g.,
with an air pump.
Heat Exchange,
subclasses 104.22+ for a heat exchange device in which mechanically
impelled fluent material picks up heat at one point in a circuit
and discharges it at another.
Electricity: Conductors and Insulators,
subclass 15.1 for fluid feeding, circulating or distributing
for cooling electrical equipment generally and indented subclass
16.1 for such having ventilation and/or gas circulation.
Electrical Generator or Motor Structure,
subclasses 58+ for cooling or fluid contact means for rotary dynamo electric
machinery which includes means to circulate a coolant.
This subclass is indented under subclass 55. Subject matter wherein the inductor device is immersed in
a heat exchanging medium comprising an insulating liquid.
(1)
Note. If the insulating liquid in which the inductor is immersed
is not specifically disclosed or claimed as a heat exchange medium
for the device classification is not herein but rather in subclass 94
below.
This subclass is indented under subclass 55. Subject matter wherein the inductor has a housing or casing
which is provided with apertures (usually open to the atmosphere)
to allow circulation of air over selected surfaces of the contained
inductor.
Electricity: Conductors and Insulators,
subclass 16.1 for a mere housing or casing for an electrical
device, where no significant structure of the device is claimed,
with means to provide for ventilation of the interior of the casing.
This subclass is indented under subclass 55. Subject matter comprising passages between or through various
components of the inductor structure so that a cooling fluid may
circulate therethrough.
(1)
Note. The passageways may be formed by coil or winding and/or
core part spacers.
Electrical Generator or Motor Structure,
subclass 65 for rotary dynamo-electric machine structure wherein spacers
are provided between motor core laminations or coils to effect a heat
exchange between a fluid medium and the core or coils.
This subclass is indented under subclass 55. Subject matter wherein a heat exchanging surface is structurally
combined with the coil or winding or the core of the inductor, or
the coil or winding or the core is especially adapted by its structure
to have a heat exchanging surface.
(1)
Note. The heat exchanging surface is not limited to heat
radiating surfaces but the heat exchange may take place by conduction
or convection or a combination of the various types of heat transfer, the
essential element required for this subclass being a surface, adapted
for heat transfer in intimate relationship with the coil or winding
or the core of the inductor.
This subclass is indented under subclass 55. Subject matter wherein at least one coil of the inductor
device is formed of a tubular conductor which is designed to convey
a temperature modifying fluid therethrough.
Electricity: Conductors and Insulators,
subclasses 28+ for co-axial type conductors with fluid or vacuum
insulation, subclass 102 for conductors formed as tubular sheaths
for other conductors, and subclasses 126.1+, and especially
indented subclasses 130 and 131 for hollow electric conductors of
the stranded type.
Electric Heating,
subclasses 600+ for inductive heating, note subclasses 628+ for
an inductor structure having a fluid flow; subclasses 678+ for microwave
heating; and subclasses 764+ for capacitive dielectric
heating.
This subclass is indented under the class definition. Inductor devices having exterior means to support the entire
inductor structure.
(1)
Note. A support is defined as a device or means which carries
the weight of the inductor device or otherwise hold or steady it
against the pull of gravity.
(2)
Note. Means for supporting parts or elements of the inductor
device with respect to each other are not considered support or
mounting means for classification in this subclass. For such subject
matter, see particularly subclass 185 for supports or spacers for
the coils of a winding; subclass 195 for one coil supported by another
coil; subclasses 196+ for supporting or spacing means between
coil and core; subclasses 199+ for coil or coil turn supports;
subclass 210 for core clamps, wedges or fasteners.
(3)
Note. A mere casing or housing for the inductor device is
not considered to be a supporting means within the definition of
this subclass. However, if the casing or housing is provided with
means for supporting the casing or housing such as being mounted
on supporting legs or wheels or has legs extending from the casing
so that casing can be mounted on a panel or wall, the structure
is considered to be supporting structure for this subclass. See
subclass 92 for inductor devices provided with means to support the
inductor device within the casing.
Electricity: Conductors and Insulators,
subclass 37 for underground supports for electrical devices;
subclass 40 for overhead supports for electrical devices; subclasses
50-64, particularly subclasses 58 and 63, for means to mount or
support a casing or housing for an electrical device; and subclasses
480-507 for means for mounting miscellaneous casings or housings
for electrical devices on or within a wall of a building structure.
Electricity: Conductors and Insulators,
subclass 46 for handles restricted by structure to use with
electrical apparatus in general. The Notes listed under subclass
46 of Class 174 indicate other fields of search for devices with
handles.
This subclass is indented under subclass 65. Subject matter provided with means to rigidly attach and
support the inductor on or to a supporting surface. Usually the
support is adapted to be fastened to a wall and projects therefrom to
support the inductor in cantilever fashion.
This subclass is indented under subclass 65. Subject matter provided with mechanical coupling means by
means of which the inductor may be hung from an overhead position.
This subclass is indented under the class definition. Inductor devices comprising means to modify the inherent
capacitive effects between (1) adjacent turns of a winding, or (2)
between adjacent windings, or (3) between windings or turns and
adjacent structure such as a core or casing therefor.
(1)
Note. The modification of the capacitive effects may be accomplished,
for example, by the provision of appropriately placed shield members,
or open-circuited auxiliary coils, or by use of a dielectric of
graded thickness or composition.
(2)
Note. The capacitive effect modifying means may be, for example,
to eliminate undesired coupling between windings, or to protect
the inductor from breakdown of the insulation on the occurrence
of high amplitude transient potentials at the inductor terminals
(see indented subclass 70 for such transient control).
(3)
Note. Mere arrangement of the conductor winding pattern to
prevent undesired coupling between coils is not subject matter for
this subclass. Such subject matter may be found in the appropriate subclass
for the structure involved.
Telegraphy, appropriate subclasses for telegraph systems with inductors and
capacity balancing means, especially
subclass 45 for loading coils, and subclasses 63 and 69 for
cable or line capacity correction.
Wave Transmission Lines and Networks, appropriate subclasses for wave transmission lines and
networks having inductor elements including means to balance the
capacitance of the elements with respect to a particular potential
plane, see particularly
subclasses 4+ , 117+ and 25+.
Telephonic Communications, appropriate subclasses for telephone systems with inductors
and capacity balancing means, especially
subclass 398 and 415 for anti-inductive telephone devices.
This subclass is indented under subclass 69. Subject matter wherein the inherent inductor capacitance
relationships are modified by additional means which change the
potential gradient distribution through at least part of the inductor,
and which may include, in addition, connections to various fixed
or other potential points in the inductor, or a rearrangement of coils
or terminals to attain a potential gradient distribution which will
minimize the deleterious effect of surge or transient electrical
pulses or waves to which the inductor may be subjected.
for inductors with electric or magnetic shielding
means for shielding the inductor from stray fields or for preventing
radiation of undesired electric or magnetic field energy.
Electricity: Conductors and Insulators,
subclass 127 for conductor structure which prevents corona discharge, including
such structure which performs this function by preventing high electrostatic
stress at any point; and subclasses 140+ for insulators,
including those combined with conductive means which function together
to control the voltage gradient, particularly subclass 143 for bushing
type insulators with alternating rings or cylinders of conductive
and insulating material which exert a modifying effect on the capacitance
between inner and outer conductors of the bushing, particularly
for voltage stress distribution.
Electrical Transmission or Interconnection Systems,
subclass 327 for protective systems for surge, transient or
parasitic current suppression in general.
Electrical Generator or Motor Structure,
subclass 196 for dynamoelectric machine armature or primary
winding structure including corona discharge prevention means.
This subclass is indented under the class definition. Inductor devices which include a coil and a member which
has at least a portion of the member formed of nonmagnetic electrically conductive
material, the member being shaped so that it provides a closed electrical
circuit for current induced therein.
(1)
Note. The conductive member may be a closed coil, a plate,
bar or slug, and need not be formed wholly of nonmagnetic material
(see indented subclass 77 for relatively movable members of such construction).
Electrical Generator or Motor Structure,
subclasses 182+ and 197 for short-circuited windings or conductors
in field or armature windings, respectively, for rotary dynamoelectric
machines.
This subclass is indented under subclass 73. Subject matter wherein the coil and the conductive member
are relatively movable with respect to each other.
and 144, for adjustable inductor devices which have
closed coils or short-circuited turns which are fixed in position
relative to the coil or coils of the inductor device.
Oscillators,
subclass 181 for oscillator systems with a variable inductance frequency
determining means, which variable inductance may be of the angularly
adjustable vane type.
for inductor devices having relatively movable coils
and a core, at least one of the coils and the core being relatively
movable, see indented subclass 119 where a coil and the core are movable
as a unit with respect to another coil.
and the subclasses specified in the Notes thereto
for inductor devices having relatively movable coils, one of the
coils being movable about an axis of rotation.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the Notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
Electrical Generator or Motor Structure,
subclasses 105+ for induced or eddy current magnetic field type
of torque transmitting clutch or brake which have a rotating short-circuited or
conducting disc member, and subclasses 210+ for dynamoelectric machines
with secondary windings or conductors which may include such of the
short-circuited coil or disc conductor type.
Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets,
subclass 225 for magneto-mechanical motive devices with relatively,
movable members of the induced current type, (e.g., rotary disk);
and subclass 226 specifically for such with short-circuited coils.
This subclass is indented under the class definition. Inductor devices wherein a coil or winding of the inductor
consists of a solid, unitary preformed casing which substantially
completely encloses the rest of the inductor structure. A wound
coil such as a toroidal or spherical coil which completely encloses another
coil and/or core is excluded from this subclass and may
be found in the appropriate structural subclasses below.
Wave Transmission Lines and Networks,
subclasses 222+ for high frequency resonators of the distributed parameter
type which may include a rigid external conductive casing.
Tuners,
subclasses 41+ for resonant line tuning units wherein the tuning capacitor
may be enclosed in a rigid conductive casing comprising the tuner
inductor, and subclass 85 for a tuner having shielding or housing means
which may be a rigid conductive casing which serves as an inductance
element.
This subclass is indented under the class definition. Inductor devices wherein the coils or windings are substantially
completely enclosed by the core structure except for such apertures in
the core structure necessary to allow passage of the coil or winding
leads.
(1)
Note. If a casing or housing having an inductor therein serves
as a portion of the magnetic path of the inductor classification
is herein rather than in subclasses 90+.
This subclass is indented under the class definition. Inductor devices provided with means for shielding at least
part of the inductor device from external electric or magnetic fields,
or with means to protect parts of the device from undesired electric
or magnetic fields originating in another part of the device, or
with means to prevent the inductor device from emanating undesired
electric or magnetic fields.
for inductive devices having coil capacitance modifying
means and in which electrostatic shields are associated with the
coil means to shield coils from each other, or in special arrangements
for balancing coil capacitances, or to modify the coil surge potential
gradient.
for inductive devices having a closed or short-circuited
coil which is often in the form of a conductive screen or plate
of the electrostatic shield type, and indented subclasses 75+ for inductor
devices having a movable nonmagnetic conductive screen or shield
which is used to vary the effective inductance of the inductor device.
for inductive devices wherein a coil, formed as
a solid, unitary structure of conductive material, forms the casing of
the inductive device and may function in part like an electrostatic
shield.
for inductive devices wherein the coil or winding
thereof is totally enclosed by a magnetic core (so-called "ironclad"
cores) which structure tends to confine the electromagnetic field within
the bounds of the inductor.
Electricity: Conductors and Insulators,
subclasses 32 through 397for miscellaneous anti-inductive structures, particularly
subclasses 350-397 for miscellaneous electrical shields and screen
structures not elsewhere classifiable. The search notes to subclasses
32-397 indicate further fields of search for anti-inductive and shielding
structure.
Electrical Transmission or Interconnection Systems,
subclasses 39+ for anti-inductive means to prevent or modify the
coupling between electrical systems, particularly subclass 91 for
"shielding means".
Amplifiers,
subclass 68 for amplifiers combined with significant details of
shielding structure, generally, subclass 170 for amplifiers having
transformer coupling including shielding means involved in such
transformer coupling.
Oscillators,
subclass 67 for oscillator systems provided with an electromagnetic
or electrostatic shield. The shield may be for an element (such
as an inductor) of the oscillator system.
Wave Transmission Lines and Networks,
subclass 12 for transmission line inductive or radiation interference reduction
systems which include shielding means for the purpose.
Electricity: Electrical Systems and Devices,
subclasses 268+ for inductors with integral switch or capacitor means,
particularly subclass 270 for those inductive devices structurally combined
with a capacitor.
This subclass is indented under the class definition. Inductor devices provided with a casing or housing to enclose
the inductor device.
(1)
Note. The casing or housing surrounding the inductor device
in the patents of this and indented subclasses is disclosed primarily
as a mechanical protection for, or to contain an insulating medium around,
the inductor.
(2)
Note. If the casing or housing is claimed as an electric
or magnetic shield the patent is excluded and classified in subclasses
84+.
(3)
Note. For classification in this or indented subclasses some
detail of the inductor device such as a winding must be claimed.
If the recitation in the claim of an inductor device is by name
only, the patent is not classified herein but rather in the appropriate
subclasses in Class 174.
Electricity: Conductors and Insulators, for miscellaneous casings and housings for electrical devices
including such casings and housings, in combination with an electrical
device recited by name only, particularly
subclasses 8+ for such devices intended to be used with a fluid
or vacuum; subclasses 37+ for underground vaults for electrical
devices; and subclasses 50+ for such devices of general
utility.
This subclass is indented under subclass 90. Subject matter wherein means are provided within the casing
to maintain the inductor device in a predetermined relation to the
casing.
for the combination of an inductor with means to
support it with respect to its environment. Housed inductor devices
with means external of the housing for supporting the device are in
subclasses 65+.
This subclass is indented under subclass 90. Subject matter wherein the housing or casing containing
the inductor contains an insulating fluid in which the inductor
is immersed.
(1)
Note. If means are provided for circulating the insulating
fluid, for cooling purposes, the patent is not classified herein but
rather in subclass 57.
(2)
Note. If the insulating fluid comprises a liquid and is provided
for a cooling effect, classification is not herein but rather in
subclass 58.
(3)
Note. For the locus of patents to insulating fluids, per
se, see the search notes in subclass 58.
This subclass is indented under subclass 90. Subject matter wherein the space between the casing or housing
and the inductor and its interstices is occupied by a semisolid
or solidified mass of insulating material such as sand or asphalt
(or other plastic material).
This subclass is indented under subclass 90. Subject matter wherein a portion of the inductor core protrudes
from the casing or housing, e.g., a transformer with "end bells"
covering only the windings and a portion of the core.
This subclass is indented under the class definition. Inductor devices which are especially designed or provided
with some structure to inhibit or reduce the vibration, to prevent
failure from the vibration or to eliminate or reduce the effects
upon the device of the vibration caused by the fluctuations in magnetic
flux.
Machine Element or Mechanism,
subclass 574.1 for flywheel with electrical or magnetic damping;
subclass 574.2 for damping using swinging masses, e.g., pendulum
type for damping, etc.; subclass 574.3 for damping by increasing
frictional force; and subclass 574.4 for damping by absorbing the
vibration force (via rubber, elastomeric material, etc.).
Brakes,
subclasses 371+ for braking devices which use plastic deformation or
breakage of a retarder element to dissipate motion; subclasses 378+ for braking
devices which use the inertia of a damping mass; subclasses 266+ for
internal resistance type braking devices or vibration damping means; and
subclass 381 for vibration dampers which use friction between damper
elements.
Electrical Generator or Motor Structure,
subclass 51 for miscellaneous vibration suppression means utilized in
rotary dynamoelectric machinery, subclass 93 for electrodynamic
brakes utilized to damp out vibrations.
Rotary Shafts, Gudgeons, Housings, and Flexible
Couplings for Rotary Shafts,
subclasses 127 and 180 for shaft couplings and shafting having vibration
dampening characteristics.
This subclass is indented under the class definition. Inductor devices combined with structure other than the
coil structure or the core structure or the supporting and spacing
structure for mounting the coils and/or cores with respect
to each other, or the structure or means for electrically insulating
the coil and core structure, and which are not classified in any
of the subclasses in this class preceding this subclass.
(1)
Note. If the other structure is a switch for varying the
inductance of the device, as a tap changing switch, the patent is excluded
from this subclass, and will be found in subclass 150 of this class
or one of the subclasses specified in the Notes to that subclass.
If the switch interrupts or completes the line circuit to the inductor,
the patent is excluded and may be found in Class 361, Electricity:
Electrical Systems and Devices subclass 157.6.
This subclass is indented under subclass 105. Subject matter combined with means to complete an external
electrical circuit connection to the inductor, said means comprising
readily-detachable, interengaging friction or screw held, or pressure-exerting,
coupling elements.
(1)
Note. Inductor devices with terminals adapted to make permanent
or semi-permanent connections with an external electrical circuit
(e.g., solder lugs) are not classified herein but rather in subclass
192.
This subclass is indented under the class definition. Inductor devices s which are provided with a permanent magnet
to modify the magnetic flux distribution.
Electricity: Power Supply or Regulation Systems,
subclasses 250 , 330, and 362 for miscellaneous inductive reactor
systems where the reactor includes a permanent magnet as a part thereof.
Amplifiers, subclasses 65+ for amplifiers
combined with significant structural detail of any of the circuit elements
which may include inductor structure; subclasses 171, 190, and 197
for amplifiers having transformer coupling including significant
details of the transformer structure, subclass 169 for amplifiers
having transformer coupling including means for adjusting such inductive
coupling.
Wave Transmission Lines and Networks, subclasses
24+ for coupling networks, including filters, equalizers, and
delay networks, having relatively movable coils, and especially
subclasses 177+ for transformer coupled wave filters.
Tuners, subclasses 59+ for tuners having
tuned transformer circuits which are substituted by switching in
which the primary may remain stationary while the secondary is moved
relative to the primary, and subclasses 61+ for tuners
having mutual inductance variable means which may be relatively displaceable
coils.
This subclass is indented under subclass 115. Subject matter wherein one of the coils is provided with
means (1) to change the physical length of the coil which is effective
as an inductive component, (2) to add or cut out turns or coils
or to substitute a coil section or component of different characteristics
or position for a coil or (3) to change the direction of current
flow through at least a portion of the coil conductor.
This subclass is indented under subclass 115. Subject matter wherein one of the coils is provided with
a core.
(1)
Note. The core may extend through the fixed and movable coil
(e.g., the movable coil may slide along the core), or one coil may
be provided with a core fixed in relation thereto and the other coil
may be relatively movable with respect to the fixed coil and core,
or each coil may be mounted on respective complementary portions
of a two part core.
for adjustable inductor devices having relatively
movable coils and a core where the movement of the movable core
is effected by the change in magnetic force between the two coils (e.g.,
constant current devices).
This subclass is indented under subclass 117. Subject matter, wherein the core is relatively movable with
respect to the two coils which are movable with respect to each
other.
This subclass is indented under subclass 117. Subject matter wherein a core and a coil which are fixed
with respect to each other are movable as a unit relative to another
coil.
for adjustable inductor devices having a coil and
a closed coil (e.g., short circuit coil) or conductive member which
are relatively movable with respect to each other, the closed coil or
conductive member having a portion formed of magnetic material.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the Notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
This subclass is indented under subclass 115. Subject matter wherein a coil is movable about an axis of
rotation and is also movable in a linear path or wherein one coil
is movable about an axis of rotation and another coil is movable in
a linear path.
for relatively movable coil inductor devices where
one coil is movable only in a linear path which is parallel to and
usually coincident with the coil axis of another coil.
where the inductor device is provided with a core
for a movable coil, the core and coil being angularly movable as
a unit with respect to another coil.
where the coil is movable about an axis of rotation
and is also linearly movable or where a coil is movable about an
axis of rotation and another coil is linearly movable.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the Notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
This subclass is indented under subclass 122. Subject matter wherein the axis of rotation of the movable
coil is coincident with or parallel to the axis of the other coil.
This subclass is indented under subclass 122. Subject matter wherein the movable coil is movable about
an axis of rotation which is offset with respect to center of coil,
the axis of rotation of the movable coil being inclined at an angle
with respect to the axis of the other coil.
This subclass is indented under subclass 122. Subject matter wherein the movable coil is movable about
an axis of rotation which passes through the center of the coil
and which is perpendicular to the axis of the other coil.
where the movable coil is movable about an axis
of rotation which passes through the center of the coil, the axis of
rotation being transverse to, but not normal to, the axis of the
other coil.
This subclass is indented under subclass 125. Subject matter having three or more coils, at least two
of the coils being angularly movable with respect to each other
and with respect to another coil.
(1)
Note. The plural movable coils may be angularly movable about
the same or different axis of rotation.
This subclass is indented under subclass 125. Subject matter wherein the stationary coil has a tubular
shape.
(1)
Note. A tubular coil is a coil having a rectilinear coil
axis and having its windings extending along the coil axis for a distance
usually greater than the cross-sectional dimensions (e.g., the diameter in
the case of round tubular coils) of the coil. The cross-sectional
shape or area usually is uniform along the coil axis. The cross-sectional
shape may be circular, oval, square, polygonal or the like. Coils
of spherical, toroidal, or pancake form, for example, are not considered
to be tubular coils for this subclass.
This subclass is indented under subclass 115. Subject matter wherein the coil is movable along a linear
axis which is either coincident with or parallel to the coil axis
of the other coil.
for inductor devices having relatively movable coils,
the movable coil being provided with a core, the core and coil being
movable as a unit along an axis coincident with or parallel to the
axis of the other coil.
for inductor devices having relatively movable coils
wherein a coil is movable about an axis of rotation and is also
movable in a linear path or wherein one coil is movable about an axis
of rotation and another coil is movable in a linear path.
This subclass is indented under the class definition. Adjustable inductor devices having a core and a coil which
are relatively movable with respect to each other so that the effective inductance
of the device may be varied.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the Notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
Electricity: Power Supply or Regulation Systems,
subclasses 216 , 264, and 347 for miscellaneous inductive reactor
systems where the reactor includes a relatively movable core and coil.
Tuners, appropriate subclasses for tuned networks for use
in wave energy apparatus and comprising inductance and capacitance
elements in circuit arrangement to form a resonant circuit and in
which structure is provided for adjusting one or both of these elements
for changing the mean resonant frequency of the circuit. The adjustable
inductance is usually of the movable core type.
This subclass is indented under subclass 130. Subject matter which includes a plurality of coils, each
of the coils being provided with a core which is relatively movable
with respect to the coil with which it is associated.
(1)
Note. The several coils may or may not be in inductive relation
to each other.
Wave Transmission Lines and Networks,
subclasses 24+ for coupling networks including plural coils with plural
cores, and particularly subclasses 177+ for transformer
coupled wave filters with magnetic core inductance.
This subclass is indented under subclass 130. Subject matter wherein the core is formed of a plurality
of separate parts, one of the parts being movable relative to the
other part.
(1)
Note. The core part which is movable with respect to the
other core part may be movable with respect to the coil, or the
other core part may be movable with respect to the coil.
This subclass is indented under subclass 132. Subject matter wherein the inductor device is provided with
at least two coils, one of the core portions forming a continuous
flux path inductively coupling the two coils, the movable magnetic
core portion being arranged between the two coils so as to provide
an adjustable shunt for shunting some of the magnetic flux from
the core portion forming the continuous flux path so that one of
the coils may be linked by a different amount of magnetic flux than that
which links the other coil.
(1)
Note. An illustrative example is:
MOVABLE CORE SHUNTS FLUX GENERATED BY ONE COIL FROM OTHERCOIL.
(2)
Note. The following illustrated types of inductor devices,
below, are not included in this subclass. For the below excluded types
of inductor devices, see subclasses 134+ where there is
an adjustable air gap and subclass 132 for such devices without
an adjustable air gap.
This subclass is indented under subclass 132. Subject matter wherein the movable core portion in at least
one of the positions to which it may be moved provides an air gap
between itself and the other core portion.
(1)
Note. The movable core portion may provide an air gap between
itself and the other core portion in all of the positions to which
it may be moved.
for inductor devices having a core and coil which
are movable as a unit about an axis of rotation to effect movement between
the core and coil unit and another coil.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
This subclass is indented under subclass 130. Subject matter in which the core and a coil are relatively
movable in the direction of the axis of the coil and in variable
amount of overlapping relation.
(1)
Note. In the devices in this subclass, the core may be "telescoped"
within the coil, or the coil may be telescoped within the core.
This subclass is indented under the class definition. Inductor devices wherein a coil is provided with means (1)
to change the physical length of the coil which is effective as
an inductive component, or (2) to add or cut out turns or coils
or to substitute a coil section or component of different characteristics
or position for a coil or (3) to change the direction of current
flow through at least a portion of the coil conductor.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
Tuners,
subclasses 47+ for tuners of the switch type and especially subclasses
56+ for a switch type tuner in which the inductor only
is modified or substituted by switching.
Communications: Radio Wave Antennas,
subclass 748 for loop type antennas with a variable reactance
for tuning the antenna; and subclass 868 for loop type antennas
having means for adjusting the coil length.
This subclass is indented under subclass 137. Subject matter comprising conductors (which may be coils)
lying in side by side relation, or having a common axis, and bridged
by a conducting member, which member is movable along the conductors
to include equivalent portions of both conductors in each of its
various positions.
Wave Transmission Lines and Networks,
subclasses 219+ for resonators of the distributed electrical parameter
type, which structurally may be parallel transmission lines joined
by a movable shorting bar, and subclasses 245+ for similar
distributed electrical parameter lines which are operated at other
than their resonant frequency thereby effecting an inductive or
capacitive reactance at the terminals thereof.
This subclass is indented under subclass 137. Subject matter wherein the coil is formed of a helically
or spirally wound conductor, a movable contactor being provided
to make contact with the coil, the conductor contact being movable
along the length of the helical or spiral conductor and maintaining
a continuous contact with the conductor during such movement so
that the conductor contact of the contactor travels in the helical
or spiral path defined by the conductor and so that in the range
of adjustment of the contactor the change in effective impedance
is continuously changing (as distinguished from a step-by-step change).
(1)
Note. If the device is also provided with means so that the
contact can be moved out of contact with the conductor to make a
large discontinuous change in inductance, this will not exclude
the patent from this subclass.
Machine Element or Mechanism,
subclasses 10+ and the subclasses specified in the Notes thereto
for mechanical mechanism for rotating a shaft including such mechanism
designed for use with an adjustable inductor device. Also see the
search notes to subclass 10 of Class 74 for the classification of
other rotary shaft moving mechanism and for the line between Class
336 and Class 74.
Electrical Resistors,
subclasses 143+ for mechanically variable electrical resistors
in which the contact terminal moves along the turns of the helical resistance
element.
This subclass is indented under subclass 139. Subject matter having a plurality of contactors for contacting
the helical or spiral conductor of the coil, or having a plurality
of spiral or helical coils with a contactor, which follows and makes
continuous contact with the conductor for each coil, the plural
contactors being capable of being moved separately or differentially with
respect to one another.
This subclass is indented under subclass 139. Subject matter having the movable contactor movably mounted
on and/or guided by an elongated bar or track member, the
bar or track member extending parallel to or being co-incident with
the coil axis.
This subclass is indented under subclass 137. Subject matter wherein the inductor device includes a plurality
of coils with separate electrical contacts or a coil having contact
means (e.g., taps) for making contact with the coil at different
places and a supporting structure for the coils or coil, the supporting
structure being provided with electrical contacts for making contact
with less than all of the coils or with means for making contact
at different places on the coil, the plurality of coils or the tapped
coil being movably supported with respect to the supporting structure,
and the coils or coil and supporting structure being designed so
that as the coils or coil is moved, different coils or coil contacts
can be moved into circuit making relation with the contacts in the
supporting structure.
(1)
Note. In the devices in this and the indented subclass, the
structure is designed for changing coils in the circuit or for varying
the amount of coil conductor in the circuit. The distinguishing feature
is that the coil change or conductor length is changed by moving
the coils or coil, rather than by having the coils or coil stationary
and moving a contactor (e.g., switch into contact with the coil terminals
or along the coil.
(2)
Note. Where the device has a plurality of coils, the coils
must be arranged so as not to be movable with respect to each other
when in circuit making relation with the contacts so as to vary
the effective inductance of the device. If the effective inductance
of the device can be changed by moving the coils relative to each
other, see subclasses 115+ above.
Electricity: Power Supply or Regulation Systems,
subclasses 255 , 340, and 354 for miscellaneous impedance systems
wherein a plurality of impedances (e.g., inductor devices) are provided
and means are provided for selecting the impedance which may be
included in the circuit.
Oscillators,
subclass 179 for oscillator systems wherein the generated oscillation
frequency may be changed in discrete steps by inductance coil substitution.
This subclass is indented under subclass 137. Subject matter wherein the inductor device is provided with
a plurality of coil sections or a coil having means (e.g., taps)
for making contact with the coil conductor at different places, the
inductor device including means (e.g., a switch) to reverse the
inductive effect of one coil section or part with respect to another
coil section or part, and to thereby change the effective inductance
of the inductor device.
This subclass is indented under subclass 137. Subject matter having adjustable means to selectively form
a closed circuit with one or more turns of the coil.
for inductor devices in which the number of effective
turns of a coil is changed by winding or unwinding the coil conductors
upon a short circuiting member.
for inductor devices with closed coil, particularly
indented subclasses 75+ where the closed coil (e.g., the
short circuited turns) is movable relative to the coil.
for similar adjustable inductor devices having a
plurality of parallel spaced coil members, a bridging member being
movable along the coils to short circuit equivalent portions of
both coils.
This subclass is indented under subclass 137. Subject matter wherein the inductor device is provided with
a plurality of coils in mutually inductive relation.
(1)
Note. See the Notes to the class definition for the other
classes which provide for plural coil inductive reactors and transformers.
where the coils are spaced in parallel relationship
and a movable contactor contacts both coils to include an equivalent
portion of both coils in circuit.
where the coils are spaced in parallel relationship
and a movable contactor contacts both coils to include an equivalent
portion of both coils in circuit.
This subclass is indented under subclass 145. Subject matter in which there are a plurality of coils or
coil portions which are connected in parallel relation with respect
to each other, means being provided to change the coil length or
connections of the parallel connected coils or coil portions.
(1)
Note. The change may be to change the coils or coil portions
from parallel relation to series relation.
(2)
Note. The device may also include coils or coil portions
connected in series with the parallel connected coils or coil portions.
Electricity: Power Supply or Regulation Systems,
subclass 346 for miscellaneous transformer systems where the
transformer is provided with windings which may be selectively connected
wither in series or parallel.
This subclass is indented under subclass 137. Subject matter comprising a coil and a contactor which travels
on and across the successive conductor turns of the coil, making
direct contact with the coil conductor.
for inductor devices having a plurality of parallel
spaced coils, a movable contractor being provided to contact both
coils to include an equivalent portion of both coils in circuit.
This subclass is indented under subclass 137. Subject matter wherein the inductor coil is provided with
a plurality of contact means so that the change in inductance can
be effected by adding or subtracting turns or coil portions in series
to the portion of the coil connected in the circuit.
Electrical Transmission or Interconnection Systems,
subclass 50 for tap changing means associated with a multi-cell
battery which floats across another source of electrical energy.
Electrical Generator or Motor Structure,
subclass 189 for tapped field or excitation windings of dynamoelectric machines,
and subclass 200 for tapped armature or primary windings of dynamoelectric
machines.
INDUCTIVE REGULATORS WITH NO RELATIVELY MOVING PARTS
This subclass is indented under the class definition. Inductor devices comprising an inductor with no relatively
movable parts wherein (1) the inductance thereof is variable in
response to current flow therethrough or (2) a magnetic shunt or
air gap is provided to cause a high leakage reactance between at
least two magnetically coupled windings, or (3) the core saturation
of the device is controlled by an auxiliary bias means such as a
D.C. control winding.
(1)
Note. A disclosure in the specification of any of the above
enumerated subject matter is sufficient to cause classification in
this or indented subclasses of any patent that would otherwise be
classified in the succeeding subclasses of this class.
Electrical Generator or Motor Structure, appropriate subclasses, particularly
subclasses 179+ for analogous generator or motor structure, and especially
indented subclass 193 for generator or motor structure having nonmagnetic
inserts or air gaps.
Electricity: Single Generator Systems, particularly
subclass 57 for dynamoelectric generators with means to saturate
a portion of the generator magnetic structure.
Electricity: Power Supply or Regulation Systems,
subclass 56 for current and/or voltage magnitude control
systems where the control means is a saturable transformer, and
subclass 89 where the control means is a saturable reactor.
Oscillators,
subclass 181 for oscillator systems having an oscillation frequency
determining element comprising a variable inductance, which inductance
may be of the saturable core type.
This subclass is indented under subclass 155. Subject matter comprising two or more magnetically coupled
windings or coils mounted on a core having at least one auxiliary
magnetic path which serves to divert a portion of the flux emanating
from one or more of the windings or coils so as to prevent the said
flux portion from linking one or more of the other windings or coils.
Electrical Generator or Motor Structure, particularly
subclass 190 for rotary dynamoelectric machine field structure
having magnetic shunts for shifting the field flux.
Electricity: Single Generator Systems, particularly
subclass 50 for dynamoelectric generator control means including
a magnetic shunt for the field flux.
This subclass is indented under the class definition. Inductor devices comprising three or more windings, not
elsewhere provided for.
(1)
Note. Inductors with polyphase windings which may have three
or more windings are not classified in this subclass but such subject
matter is classified above in subclasses 5+ of this class.
(2)
Note. Inductors which may have two or more windings and in
addition a closed or short circuited coil or winding are not classified
in this subclass but such subject matter is classified above in
subclasses 73+ of this class.
for inductive devices having relatively movable
core and coil, which may have three or more windings. See particularly
indented subclass 131 for inductors including plural cores and plural
coils or windings.
for inductive devices with means to change coil
lengths or connections which may have three or more windings. See
particularly indented subclasses 145+ for transformers
with plural windings or coils.
for inductive devices having multiple magnetic paths
which includes subject matter where such multiple magnetic paths
have or are adapted to have three or more windings distributed thereon.
Electrical Generator or Motor Structure,
subclasses 184+ and 198+ for plural field windings and
plural armature or primary windings, respectively, for rotary dynamoelectric machines.
Electricity: Power Supply Regulation Systems, particularly
subclasses 48+ for transformer systems with plural primary and/or
secondary windings, and subclasses 83+ for inductor systems
in general having plural windings.
Amplifiers,
subclasses 165+ , 188+, and 195+ for amplifier
systems having transformer coupling, particularly subclasses 171,
190, and 197 where transformer structure is involved.
This subclass is indented under subclass 170. Subject matter wherein the inductor device and its windings
are so constructed, positioned, arranged, and/or connected
that at least one of the windings is electromagnetically decoupled with
respect to the other windings.
for inductor devices having a winding with plural
coils, so constructed or arranged that the axis of at least one coil
is not coincident with the axes of the other coils.
Wave Transmission Lines and Networks, for wave transmission systems utilizing hybrid or
three winding transformers wherein at least one winding is magnetically
decoupled from the other windings.
COIL TURN LINKS PORTION OF CORE ACROSS SECTION (E.G., FRACTIONAL TURN)
This subclass is indented under the class definition. Inductor devices wherein the inductor comprises a coil or
winding having a turn or series of full turns which embrace the
full transverse section of the core and which includes, in addition,
one or more shorter turns which embrace only a portion of the transverse section
of the core. The core flux path may be a single solid or laminated
core leg with a small piece thereof cut out to permit the "partial
turns" to enclose a smaller cross-section of the core flux path
than is enclosed by the full turns; or the core flux path may consist
of two or more parallel core legs of a single core or of two independently
constructed cores with the full turns enclosing the core legs in
cross-section, and the "partial turns" enclosing in like manner
fewer core legs than those enclosed by the full turns.
and 160+, for inductor devices of the adjustable
or regulating type having core structures including a separate and
distinct shunt magnetic path structure.
INTERLINKED COILS OR WINDINGS (E.G., CURRENT TRANSFORMER)
This subclass is indented under the class definition. Inductor devices in which two or more coils or windings
of the device, as defined by the limiting or boundary surfaces of
their turns, cross each other so as to be interlinking.
(1)
Note. Inductors in which the individual turns of two or more
coils or windings mutually cross each other are not classified under
this or indented subclass, but will be found in subclass 188 below; inductors
with plural coil windings where single turns of different coils
may cross at one or more points are classified under subclasses
180+; coils, formed of plural parallel conductors which
are transposed, are under subclass 187; and single coils with crossed
turns are classified under subclasses 189+.
(2)
Note. Closed or short-circuited coils which may interlink
with another coil or winding are not classified herein, but will
be found in subclasses 73+ of this class.
Electrical Generator or Motor Structure,
subclasses 179+ for winding and core structures for rotary dynamoelectric
machines, appropriate subclasses of which may have interlinking
coils.
Electricity: Measuring and Testing,
subclass 127 for means for measuring, testing, or sensing electricity,
per se, having a transformer coupling which may be of the type having
interlinking coils or windings (e.g., current or potential instrument
transformers).
This subclass is indented under subclass 173. Subject matter wherein one of the interlinking coils is
a linear conductor and is surrounded by another coil.
(1)
Note. The linear conductor referred to above is regarded
as a segment of a circular coil of infinite radius thereby bringing
such subject matter within the definition of subclass 173 under
which this subclass is indented.
This subclass is indented under the class definition. Inductor devices in which a linear conductor comprising
the inductor winding or coil is surrounded by a magnetic core.
(1)
Note. Where both a coil and core surround a linear conductor
the subject matter is classified above in subclass 174 of this class.
Electricity: Measuring and Testing,
subclass 127 for means for measuring, testing, or sensing electricity,
per se, having transformer coupling means, some of which are current
transformers having a winding or coil comprised of a linear conductor.
This subclass is indented under subclass 175. Subject matter in which the magnetic core surrounding the
linear conductor comprises plural parts which are hinged at some
point, usually to facilitate placing the core about the conductor.
This subclass is indented under the class definition. Inductor devices wherein the conductor of a coil of the
device is constructed in whole or in part of magnetic material.
Stock Material or Miscellaneous Articles,
subclasses 544+ for stock material or intermediate articles which
are all metal or have adjacent metal components, particularly subclasses
615+ for metallic composites defined in terms of the composition
of their components, and subclass 928 for metallic stock having
magnetic properties.
This subclass is indented under the class definition. Inductor devices comprising a structure having a closed
core which is partially or completely interrupted at one or more
points by nonmagnetic separators or air gaps.
(1)
Note. If the purpose of the nonmagnetic separator or gap
is for the purpose of causing a leakage reactance which is usually
a function of the load current of the device, the patent is not
classified herein but rather in subclasses 155+.
Electrical Generator or Motor Structure,
subclass 192 for electric generator or motor winding and core
structure having nonmagnetic inserts or air gaps.
This subclass is indented under the class definition. Inductor devices wherein the coil or winding and/or
supporting structure thereof is so constructed as to maintain the
inductance of the device constant over a predetermined range of
ambient temperature, or wherein the device is designed to follow
a predetermined law of variation of inductance with ambient temperature.
(1)
Note. The inductance of the device may be maintained constant
by (1) utilizing structural components having equal compensatory
temperature coefficients, or (2) utilizing winding and/or
supporting structure members having constant temperature coefficients.
(2)
Note. Inductor devices controlled by an external temperature
sensitive element are not herein included. For such subject matter
see subclass 30.
Electricity: Electrical Systems and Devices,
subclass 140 for electromagnet circuits having means for compensating
for thermal changes, and subclasses 158 and 161+ for electromagnet
systems that are thermally responsive.
WINDING FORMED OF PLURAL COILS (SERIES OR PARALLEL)
This subclass is indented under the class definition. Inductor devices wherein the device is comprised of at least
one winding having a plurality of coils which are connected or are
specifically designed to be connected together.
Electrical Generator or Motor Structure,
subclasses 179+ for winding and core structure for dynamoelectric machines,
appropriate subclasses of which may include windings having plural
coils.
Electricity: Power Supply or Regulation Systems,
subclasses 44+ for transformer systems, and subclasses 82+ for
reactors appropriate subclasses of which may include windings with
plural coils.
Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets,
subclasses 291+ for structure of lifting, holding and similar magnets, appropriate
subclasses of which may include windings with plural coils.
This subclass is indented under subclass 180. Subject matter in which the coils of the winding are so
positioned, constructed and connected that the resultant external
magnetic field set up, when current is caused to flow in each of
the coils, is substantially reduced or cancelled (i.e., so-called
"fieldless" coils).
for coils of special configuration some of whose
shapes may be of significance in reducing external fields, particularly
subclass 229, toroidal coils, indented thereunder which are known to
reduce external fields.
This subclass is indented under subclass 180. Subject matter in which the inductor includes two windings,
at least one of which is formed of plural coils.
for inductors having two windings wherein each winding
consists of a single coil. Note particularly the subclasses of
this class and the outside classes specified in the Notes to subclass
220 as to other fields of search for plural winding inductors wherein at
least one of the windings may include plural coils.
This subclass is indented under subclass 180. Subject matter in which the inductor includes two windings,
at least one of which is formed of plural coils.
for inductors having two windings wherein each winding
consists of a single coil. Note particularly the subclasses of
this class and the outside classes specified in the Notes to subclass
220 as to other fields of search for plural winding inductors wherein at
least one of the windings may include plural coils.
Amplifiers,
subclasses 165+ , 188+, and 195+ for amplifier
systems having transformer coupling, particularly subclasses 171,
190, and 197 where transformer structure is involved.
This subclass is indented under subclass 182. Subject matter in which at least one coil of one winding
is positioned between separate coils of another winding.
This subclass is indented under subclass 180. Subject matter wherein the coils of an inductor winding
are distributed on different legs of the inductor core means, or
wherein at least two coils of an inductor winding are so positioned that
their axes do not coincide.
(1)
Note. For relevant material in other classes see the search
notes to other classes under subclasses 180 and 182 of this class.
for inductors with coil capacitance balancing means
which also may have a winding with plural coils distributed on different
axes or different core legs.
for relatively movable core and coil with plural
coils and plural cores which may have a winding with plural coils
distributed on different axes of core legs.
for inductive regulators with no movable parts which
may have plural coils of a winding distributed on different core
legs or wherein the axes of the coils of a winding do not coincide.
Electrical Generator or Motor Structure, particularly
subclasses 184+ for rotary dynamo-electric machine field structures
having plural field coils on separate poles and which may be connected
to form a single winding.
This subclass is indented under subclass 180. Subject matter comprising preformed supporting, holding
or spacing means which supports, holds or maintains in spaced apart
relationship a plurality of coils of a winding.
(1)
Note. Supports for the closely similar organization of plural
windings not involving a plural coil winding, are excluded from
this subclass and are classified in subclasses 199+ of
this class.
for inductors with ventilating passages, particularly
for structure establishing such passages by spacing apart coils
of a plural coil winding or wherein such passages are a part of the
coil supporting structure.
for supporting or spacing means between coil and
core of an inductor, particularly subclass 198 indented thereunder
for preformed insulation between coil and core.
This subclass is indented under the class definition. Inductor devices comprising a coil having convolutions or
turns formed of plural strand or multiple type conductors, which strands
or conductors are electrically connected in parallel.
(1)
Note. The subject matter of this subclass is distinguished
from that of subclass 180 of this class in that, of the parallel connected
plural coils which may be found therein, each coil is a separate entity,
as established in the definition of coil immediately under the class
definition, whereas in this subclass (186) each of the plural conductors
is not constructed to function as a separate inductor coil, but
all the parallel connected conductors together are constructed and arranged
to function as a single coil.
Electricity: Conductors and Insulators, particularly
subclasses 24+ , and 68.1+ for plural conductor cables
or conductors, especially subclasses 113+ indented under
subclass 68.1 for multiple conductors wherein the individual conductors
are insulated from each other, and subclasses 128+ indented
under subclass 68 for plural strand conductors wherein the individual
strands are uninsulated.
This subclass is indented under subclass 186. Subject matter in which the plural conductors comprising
the coil are transposed in positional relationship to each other
at a plurality of points.
Electricity: Conductors and Insulators, particularly
subclass 34 for multiple conductor or cable structure wherein
the conductors are transposed in relative position, usually for
the purpose of reducing the effect of mutual inductance between
the conductors.
This subclass is indented under the class definition. Inductor devices wherein the device comprises two windings
whose respective turns are mutually crossed at a plurality of points.
for interlinking coils. The coils do not have mutually
crossed turns but the coils as a whole are interlinking. Subclass
174 indented under 173 has a linear conductor as one coil.
This subclass is indented under the class definition. Inductor devices comprising inductor coils in which the
conductor thereof is in crossed relationship with itself at a plurality
of points in its length.
(1)
Note. Transposed parallel connected conductors and plural
windings with mutually crossed turns are classified in subclasses
187 and 188, respectively, of this class.
for inductors wherein the winding or coil has at
least one turn of reduced length which links only a portion of the
flux path and which turn may cross the remaining full turns of the winding
or coil.
Electrical Generator or Motor Structure, appropriate subclasses under 179+, which include
coils and windings with crossed turns particularly
subclasses 206 and 207 for lap and wave windings.
Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets,
subclasses 291+ for magnets and electromagnets structure of the
lifting, holding or tractive type which may include coils of the
bank-wound or other cross-wound types. See subclass 210 for electronic
and ionic beam deflecting coils which are usually of the scramble-wound
type.
This subclass is indented under subclass 189. Subject matter wherein the inductor comprises a coil of
more than one layer of conductor (e.g., honeycomb and random or
scramble wound coils).
This subclass is indented under subclass 189. Subject matter wherein the inductor comprises a single layer
coil of the basket weave type. This subclass includes basket weave
coils where the layer is concentric to the coil axis and spider
web coils where the layer lies in a surface normal to the coil axis.
WINDING WITH TERMINALS, TAPS, OR COIL CONDUCTOR END ANCHORING MEANS
This subclass is indented under the class definition. Inductor devices comprising inductors with means, such as
terminal lugs, for effecting external electrical connection to the
inductor coil conductor ends, or wherein means are provided to effect
electrical connection intermediate the coil conductor ends (e.g.,
tap connections), and/or wherein means are provided to
fasten or tie in the end turn or turns of the coil conductor to
prevent loosening or unravelling thereof.
(1)
Note. The terminal connectors of the quick detachable type
(e.g., plug and socket type) when combined with an inductor device
are excluded from the above subclass and will be found in subclass
107, above.
for coil turn supports or spacers, particularly
indented subclass 200 for coated conductive means used as a terminal
or tap, indented subclass 205 for coil terminals, taps or end means embedded
in plastic material, and indented subclass 206 for flexible filaments,
strip or sheet insulation used to anchor coil terminal ends.
Buckles, Buttons, Clasps, etc.,
subclasses 115+ for cord and rope holders particularly indented
subclasses 122.3 and 122.6 for holders for sheathed strand and plural-strand
cord or rope (which includes similarly constructed electrical conductors
where no electrical features are claimed.)
Metal Working, appropriate subclasses for methods of manufacture and special
apparatus for assembly and disassembly of metal articles and the
like, generally particularly
subclasses 874+ for methods of manufacture of contacts and terminals,
subclasses 602.1+ methods of manufacture of electromagnets,
transformers, and inductances, especially subclass 605 with winding
and coiling which includes the anchoring of coil ends.
Adhesive Bonding and Miscellaneous Chemical Manufacture,
subclasses 47+ for methods of making electrical conductors of
indefinite length, noting subclass 49, indented thereunder, which
is specific to splicing. See also appropriate subclasses in this
class (156) for apparatus and methods involving winding and wrapping.
Electricity: Conductors and Insulators, appropriate subclasses for electrical conductor and insulator
structure in general, particularly,
subclasses 19+ for conduit or cable end structure with fluid or
vacuum and subclasses 21+ for conduit or cable joint structure
with fluid or vacuum, subclasses 68.1+ for conduit, cable and
conductor structure in general, especially indented subclasses 71+ for branched
structures, indented subclass 73 for joint and end structure and
subclasses 84+ for joint structure.
Electricity: Transmission to Vehicles, particularly
subclasses 12.2+ for flexible electrical conductors having an end
secured to a reel structure and adapted to be wound thereon.
Electrical Generator or Motor Structure, particularly
subclasses 40+ for rotary dynamoelectric machines, especially
subclass 71 of such machines combined with connectors, terminals
or lead-ins, subclass 234 for commutators having winding connectors,
subclass 260 for stator structure with end turn supports and subclass 270
for rotor structure with end turn supports.
Electrical Connectors, appropriate subclasses for electrical connectors, generally.
Search especially
subclasses 1+ for a pair of relatively movable electrical connectors;
subclasses 445+ for an electrical connectors with a pivoted
guard for the line cord; subclasses 449+ for an electrical
connectors with a stress relieving means; and subclasses 877+ for
a metallic connector or contact also having securing part adapted
to be crimped, deformed or bent onto a conductor.
COIL SUPPORTED WITHIN GROOVED OR HOLLOW COIL CONDUCTOR OF ANOTHER COIL
This subclass is indented under the class definition. Inductor devices wherein one coil conductor supports another
coil conductor in specifically provided channels, grooves, recesses, or
hollow spaces within such supporting coil conductor.
(1)
Note. Where one coil merely supports another without especially
designed spaces within the coil conductor for receiving the supported
coil, such subject matter is not in this subclass, but will be found
in subclass 185 where plural coil windings are involved or in subclass 208
of this class where one coil forms a preformed support for another.
(2)
Note. Where a supporting coil completely encloses the supported
coil such subject matter is not in this subclass but will be found
in subclass 82 of this class.
Electricity: Conductors and Insulators, particularly
subclasses 28+ for co-axial or concentric conductors, subclasses
102+ for conductors with conductive armor or sheath, subclasses
113+ for electrical conductor structure, per se.
Stock Material or Miscellaneous Articles,
subclasses 544+ for stock materials, e.g., of indefinite length
which are all metal or have adjacent metal components.
WITH SUPPORTING AND/OR SPACING MEANS BETWEEN COIL AND CORE
This subclass is indented under the class definition. Inductor devices comprising the combination of coil and
core with means to hold the coil and core in fixed relative relation
to each other or wherein electrical insulating material is interposed
between the core and coil.
30+, 60, 77, 83, 100, 110, 117+,
130+, 155+, 175+, 178, 184, and 185 for combinations
of coil and core which may include electrical insulating material
between coil and core or which may have means to support or space
the coil relative to the core. See also the comprehensive list
of search notes appended to subclass 221 of this class as to other
fields of search for the combination of coil and core which may
include structure falling within the definition of this subclass.
Electrical Generator or Motor Structure,
subclasses 179+ for windings and core structure for rotary dynamoelectric
machines, particularly subclass 215 for core slot liners for insulating
winding conductors from the core.
This subclass is indented under subclass 196. Subject matter wherein the means for holding the coil relative
to the core includes a clamping or wedging means.
Electrical Generator or Motor Structure, especially
subclass 214 for coil retainers or slot closers for holding dynamoelectric
machine windings fixed relative to their associated core means.
This subclass is indented under subclass 196. Subject matter wherein there is a structure of predetermined
shape (e.g., a spool) of electrically insulating material interposed
between coil and core.
(1)
Note. Ordinary stock material which is not preformed especially
to adapt it to its separating and insulating function in the particular
coil and core combination involved is not in this subclass but in subclass
196 above.
Electrical Generator or Motor Structure, particularly
subclass 194 for dynamoelectric machine field or excitation
coil supports or spools, usually of preformed insulating material,
and subclass 215 for core slot liners of preformed insulating material
for insulating the core from the coil.
This subclass is indented under the class definition. Inductor devices comprising supports or forms for coils,
coil conductors or coil conductor turns, or means to space coil
conductors, coil conductor turns, or spacers and supports for more
than one coil (each said one coil constituting a separate independent
winding) and which support or spacing means is not provided for
in any of the preceding subclasses.
(1)
Note. Spacers between separate coils of a plural coil winding
and supports for plural coil windings are in subclass 185.
Metal Working, particularly
subclasses 602.1+ for processes of manufacture of inductor devices
in general, and note especially the comprehensive list of classes
referred to under "SEARCH CLASS" of this subclass as to other product,
manufacturing or process classes which may include processes for
making inductors having particular coil supports, coil spacers or
coil conductor turn spacers, or the resulting product.
Electrical Generator or Motor Structure, particularly
subclasses 179+ for windings and core structure for rotary dynamoelectric
machines, especially indented subclass 194 for field winding supports
and spools, and indented subclass 209 for armature coil structure,
per se.
Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets,
subclasses 291+ for the structure including coil, coil conductor supports
or spacers, for electromagnets of the lifting, holding or tractive type.
This subclass is indented under subclass 199. Subject matter wherein the inductor coil structure comprises
a conductive coating material on a base. For example, such as produced
by a printing, painting, spraying, electro-deposition or similar
coating method, or by the removal of adherent conducting material
from an insulating base by etching, grinding, or the like.
Metal Working, especially
subclasses 602.1+ for processes of manufacture of inductor devices
in general. See the comprehensive list of classes referred to under
"SEARCH CLASS," of subclasses 602.1+ of Class 29, as to other
classes which may include processes for making printed circuit type electrical
devices or the resulting products.
Printing, appropriate subclasses for apparatus and processes
for producing characters or designs on surfaces by impression of
type or dies or by applying coating material to a surface through
openings in a pattern sheet (e.g., stenciling).
Adhesive Bonding and Miscellaneous Chemical Manufacture,
subclasses 2+ for etching processes of producing surface effects,
subclass 154 for abrading or grinding of a laminated product and
subclass 155 for removal or destruction of transitory material by
dissolving or melting, etc.
Chemistry: Electrical and Wave Energy, appropriate subclasses for apparatus and processes
utilizing electrical energy or wave energy, either electromagnetic
or mechanical, for forming particular shapes or coating surfaces,
such as printed circuit type configurations.
Electricity: Electrical Systems and Devices,
subclasses 748+ for structural combinations of diverse impedance
elements such as inductors, capacitors or resistors not elsewhere classifiable
and which may be of the printed circuit type.
Electrical Connectors, especially
subclasses 55+ for an electrical connector combined with a preformed
panel circuit arrangement (e.g., printed circuit board).
This subclass is indented under subclass 199. Subject matter wherein the conductor forming the coil is
wholly or partially embedded in plastic supporting or adhesive electrically
insulating material, which material holds or supports the adjacent
coil conductor portions in spaced apart relation.
for coil structures with crossed turns, including
bank wound and basket weave coils, wherein the coil conductor turns
may be held in position by plastic or adhesive material.
Metal Working, especially
subclasses 602.1+ for the process of manufacture of inductor devices,
not elsewhere classifiable, and which may include the step of adhering
coil conductor turns to a base member or the step of molding plastic
material about coil conductor turns to hold them in fixed relation
to each other.
Adhesive Bonding and Miscellaneous Chemical Manufacture,
subclasses 52+ for covering of electrical conductors of indefinite
length with preformed material. See other appropriate subclasses
in this class for methods and apparatus for manufacture of laminated
materials and analogous structures not provided for elsewhere.
Electricity: Conductors and Insulators, particularly
subclass 96 for plural conduit-ducts or conductors or subclass
98 for conduit-duct or conductors that are embedded in material which
may be plastic.
Plastic and Nonmetallic Article Shaping or Treating:
Processes, appropriate subclasses, for processes within the class
definition, for molding or shaping plastic materials. See particularly
subclasses 272.11+ which pertain particularly to electrical component
encapsulating.
Electrical Resistors,
subclasses 226+ for electrical resistors embedded, incased or housed,
and especially subclasses 262+ and 275 wherein the casing
is formed as a coating on or molded on the resistance element.
Plastic Article or Earthenware Shaping or Treating:
Apparatus,
subclasses 110+ for a molding apparatus combined with means to
feed or support a preform in a molding cavity for encapsulation
thereof, see especially subclasses 123+ for such apparatus including
means to support plural preforms.
This subclass is indented under subclass 199. Subject matter wherein flexible filament, strip, or sheet
insulation holds, supports or maintains in spaced apart relation
adjacent coil conductor portions, coil layers, or coils.
(1)
Note. For separate coils separated by insulation, which coils
form part of a single winding, see subclass 185 above.
(2)
Note. Coils wherein the flexible insulating material forms
only the outer wrapper or binder for the coil are not in this subclass
but will be found in subclass 209, below.
Metal Working, particularly
subclasses 602.1+ for processes of manufacture assembly or disassembly
of inductor devices including the utilization of flexible insulating
material in the manufacture thereof.
Adhesive Bonding and Miscellaneous Chemical Manufacture, appropriate subclasses for methods and apparatus
for manufacture of laminated materials and analogous structures
not provided for elsewhere, e.g., by winding.
Electricity: Conductors and Insulators, particularly
subclasses 120+ and 124, for conductors covered with flexible sheet
insulating material, and subclass 143 for condenser type bushings
utilizing flexible sheet insulating material.
Winding, Tensioning, or Guiding,
subclasses 430+ for a process or apparatus for forming an article
by winding material (e.g., wire and tape) onto a core, subclasses
444.1+ for simultaneously winding electrically conductive
and nonconductive strips on a core to form an article, usually a capacitor,
and subclasses 602+ for a spool having structure to maintain
coil convolutions or layers in spaced apart relationship.
This subclass is indented under subclass 199. Subject matter wherein means are provided for maintaining
coil turns or adjacent portions of the coil conductor in spaced
apart relation. The means, by way of example, may be individual spacers
or coil conductor holding grooves of a coil supporting form.
This subclass is indented under subclass 199. Subject matter comprising coil supports having a definite
shape and which are not provided for in any of the preceding subclasses.
This subclass is indented under the class definition. Inductor devices comprising coils or windings externally
wrapped or bound with flexible insulating sheet or tape and not
previously provided for in any of the subclasses above.
(1)
Note. See preceding subclass 206 of this class for coil structures
wherein flexible filament, strip, or sheet insulation is employed
to hold, support, or separate adjacent coil conductor portions,
coil layers or coils. Where the coils separated by insulation form
part of a single winding, see subclass 185 of this class.
and see (1) Note above. See also the search notes
appended to subclass 206 as to further fields of search for subject
matter similar to that provided for in subclass 209.
This subclass is indented under the class definition. Inductor devices comprising inductor core structure with
means for fastening plural parts of the core or the core laminations
into a single integral core.
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