U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
2000 ARCHIVE COPY
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
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Classification Index
Explanation of Data web page.
(definitions have been obtained from the
Patents ASSIST CD-ROM which
is produced by the U.S. Patent and Trademark Office
Electronic Products Branch)
Class 336
INDUCTOR DEVICES
Class Definition:
This is the generic class for the structure of inductor
devices of the passive type.
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 and/or receivers, Class 379,
Telephonic Communications, subclasses 102.07, 110.01, 112,
and 114+.
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.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
72, 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.)
73, 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 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.)
74, 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.)
82, Turning, 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.)
83, 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.)
102, Ammunition and Explosives, appropriate subclasses for
firing devices for explosive devices which are actuated by
the effect of a magnetic field, see 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.)
118, Coating Apparatus, 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.)
142, Wood Turning, the subclasses indented under the title
"copying" and subclass 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.)
144, Woodworking, 144.1 and 145.1+ for a pattern controlled
wood working machine.
174, Electricity: Conductors and Insulators, 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)
178, 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)
178, Telegraphy, subclass 43 for telegraph systems. (See
Lines With Other Classes and Within This Class, Inductor
Devices Systems, 4, above.)
178, Telegraphy, 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.)
191, 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.)
209, 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.)
246, 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.)
266, Metallurgical Apparatus, 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.)
307, Electrical Transmission or Interconnection Systems, 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)
324, Electricity: Measuring and Testing, 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.)
333, Wave Transmission Lines and Networks, 213 for reactance
networks, which may be inductive, of the active element
type.
340, Communications: Electrical, 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.)
340, 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.)
343, 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.)
374, 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.)
379, Telephonic Communications, 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.)
379, Telephonic Communications, subclass 55.1 for telephone
systems.(See Lines With Other Classes and Within This Class,
Inductor Devices Systems, 4, above.)
379, 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)
409, Gear Cutting, Milling, or Planing, 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.)
428, Stock Material or Miscellaneous Articles, 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.
446, Amusement Devices: Toys, 129 for a toy which involves
magnetic phenonmena in its operation.
451, 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.)
455, Telecommunications, 67.1 for measuring a testing
devices used for testing the operating conditions of the
systems; and subclass 226 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.)
505, Superconductor Technology: Apparatus, Material,
Process, 150 for devices or systems utilizing high
temperature (T[subscrpt]c[end subscrpt] > 30 K)
superconducting material, particularly subclasses 211+ for
inductors using high temperature superconducting material.
600, Surgery, 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.)
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.
SUBCLASSES
Subclass:
5
![[Patents]](../gifs/ps.gif)
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).
SEE OR SEARCH CLASS:
307, Electrical Transmission or Interconnection Systems, 13
for plural load systems of the polyphase type.
310, Electrical Generator or Motor Structure, appropriate
subclasses under subclass 10 for dynamoelectric machine
structure of the polyphase type.
323, 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 44 for
miscellaneous polyphase transformer systems, and subclasses
63+ for the miscellaneous polyphase impedance (including
inductive impedance) systems.
331, Oscillators, subclass 45 for polyphase output
oscillator systems utilizing polyphase inductor structure.
363, Electric Power Conversion Systems, especially 152 for
induction type (e.g., transformer) phase conversion systems.
Subclass:
10
![[Patents]](../gifs/ps.gif)
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).
SEE OR SEARCH CLASS:
307, Electrical Transmission or Interconnection Systems,
subclass 104 for systems having means for controlling the
same under highly inductive conditions.
323, 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.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 220 for structure of polyphase induction
devices without inductance varying means.
Subclass:
12
![[Patents]](../gifs/ps.gif)
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.
Subclass:
15
![[Patents]](../gifs/ps.gif)
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:
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for adjustable inductor devices wherein the inductance
change is effected by distorting or misshaping a coil
conductor and/or core of the regulator.
116 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.
184 for inductor devices with coils having different axis or
on different core legs.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
191, Electricity: Transmission to Vehicles, 12.2 for an
electric current supply conductor and reel means upon which
the conductor may be wound.
242, Winding, Tensioning, or Guiding, 370 for a reeling
device of general use.
334, Tuners, subclass 38 for tuners having a reactor element
which is adapted to be wound or unwound upon a core or form.
338, 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.
343, Communications: Radio Wave Antennas, 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.
Subclass:
20
![[Patents]](../gifs/ps.gif)
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: [figure]
[caption](a) The core is deformed [figure] [caption](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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 for adjustable inductor devices wherein the deformation
or distortion of the coil conductor is that caused by winding
and/or unwinding the conductor.
115 for inductor devices having two or more coils which are
movable relative to each other.
130 for inductor devices having a relatively movable
magnetic core and coil.
SEE OR SEARCH CLASS:
331, Oscillators, subclass 157 for oscillator systems having
a frequency determining element comprising electromechanical
resonator of the magnetostrictive type.
343, Communications: Radio Wave, subclass 868 for loop type
antennas with an adjustable configuration, area, or coil
length.
367, Communications, Electrical: Acoustic Wave Systems and
Devices, subclass 168 for magnetostrictive electro-acoustic
or electro-vibrational transducers.
369, Dynamic Information Storage or Retrieval, 146 for
magnetostrictive transducers for electromechanical recording
or reproducing.
381, Electrical Audio Signal Processing Systems and Devices,
150 for electro-acoustical transducers of the
magnetostrictive type for use in telephony. Subclasses 150+
includes transmitters and receivers.
Subclass:
30
![[Patents]](../gifs/ps.gif)
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:
[figure]
(3) Note. See section VI of the class definition for a
listing of other classes which have condition response
variable inductor devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 and see (1) Note, above.
SEE OR SEARCH CLASS:
307, 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.
323, Electricity: Power Supply or Regulation Systems, for
single load regulation systems in which the regulation is
controlled by a condition.
331, Oscillators, 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.
333, Wave Transmission Lines and Networks, 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.
334, 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.
455, Telecommunications, subclass 257 for receivers with
automatic frequency control and subclasses 150.1+ for
particular frequency selection means in radio receivers.
Subclass:
40
![[Patents]](../gifs/ps.gif)
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: [figure]
(2) Note. This subclass includes inductor devices such as
are used in constant current systems.
SEE OR SEARCH CLASS:
323, Electricity: Power Supply or Regulation Systems,
subclass 305 for single source to single load type constant
current regulation systems.
Subclass:
41
![[Patents]](../gifs/ps.gif)
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.
(2) Note. An illustrative example is: [figure]
SEE OR SEARCH CLASS:
248, 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.
Subclass:
45
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
116, Signals and Indicators, 241, for miscellaneous position
indicators other than the electrically actuated or controlled
type.
331, 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.
340, Communications: Electrical, appropriate subclasses for
electrically actuated or controlled signals and indicators,
especially 870.31 for telemetric systems.
Subclass:
55
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 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.
SEE OR SEARCH CLASS:
62, Refrigeration, appropriate subclasses for miscellaneous
refrigeration apparatus, particularly 259.1 for
refrigeration means installed in structures having other
functions.
165, 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.
174, Electricity: Conductors and Insulators, 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.
310, Electrical Generator or Motor Structure, subclass 16
and 52+ for reciprocating and rotary dynamoelectric machines,
respectively, with cooling or temperature modification
means.
315, 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.
331, Oscillates, subclass 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.
454, Ventilation, appropriate subclasses for miscellaneous
ventilating apparatus.
Subclass:
57
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
62, Refrigeration, particularly 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.
165, Heat Exchange, 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.
174, 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.
310, Electrical Generator or Motor Structure, 58 for cooling
or fluid contact means for rotary dynamo electric machinery
which includes means to circulate a coolant.
Subclass:
58
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
208, Mineral Oils: Processes and Products, subclass 14 for
an insulating oil comprising only mineral oil components.
252, Compositions, 570 for fluent dielectric compositions
containing a nonhydrocarbon material.
585, Chemistry of Hydrocarbon Compounds, 6.3 for an
all-hydrocarbon insulating oil containing more than mineral
oil fractions.
Subclass:
59
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
165, Heat Exchange, 128 for a heat exchange structure having
a thermosyphonic flue.
174, 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.
454, Ventilation, appropriate subclasses for miscellaneous
ventilating structure such as cowls, hoods and louvers.
Subclass:
60
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
185 for windings formed of multiple coils with spacers
therebetween.
196 for spacing means between coil and core.
199 for spacing means between coils or coil turns.
SEE OR SEARCH CLASS:
310, 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.
Subclass:
61
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 185 for a heat transmitter, per
se.
310, Electrical Generator or Motor Structure, 64 for heat
exchanging surfaces in rotary dynamoelectric machines.
Subclass:
62
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
223 for windings having conductors of a particular shape
including tubular.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, appropriate subclasses for
miscellaneous pipe and tubular conduit structure.
174, Electricity: Conductors and Insulators, 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.
219, Electric Heating, 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.
Subclass:
65
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
92 and see (3) Note above.
185 and see (2) Note above.
195 and see (2) Note above.
196 and see (2) Note above.
199 and see (2) Note above.
210 and see (2) Note above.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, subclass 37
for underground supports for electrical devices; subclass 40
for overhead supports for electrical devices; subclasses 48
for means for mounting miscellaneous casings or housings for
electrical devices on or within a wall of a building
structure; subclasses 50+, particularly subclasses 58 and 63,
for means to mount or support a casing or housing for an
electrical device.
248, Supports, appropriate subclasses for miscellaneous
supports.
310, Electrical Generator or Motor Structure, subclass 91
for dynamoelectric machines combined with supporting means
therefor.
343, Communications: Radio Wave Antennas, subclass 869 for
loop type antennas with a rotatable support.
361, Electricity: Electrical Systems and Devices, 600 for
mounting means for switchboards or plural diverse.
Subclass:
66
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 65. Subject matter
provided with means to manually hold or support the inductor
device.
SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, 110 for handles in general.
174, 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.
310, Electrical Generator or Motor Structure, subclass 50
for rotary dynamoelectric machines of the portable or hand
tool type.
Subclass:
67
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, particularly 48
for wall mounted conduits or housings.
248, Supports, appropriate subclasses for object supporting
brackets of general application, see particularly 200.
Subclass:
68
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
248, Supports, appropriate subclasses for object supporting
suspension type supports, see particularly 317.
Subclass:
69
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
178, 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.
307, Electrical Transmission or Interconnection Systems, 89
for anti-inductive systems in general.
333, 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 4, 117+ and 25+.
361, Electricity: Electrical Systems and Devices, subclass
270 for structural combinations of an inductor and a
capacitor.
379, Telephonic Communications, appropriate subclasses for
telephone systems with inductors and capacity balancing
means, especially subclass 398 and 415 for anti-inductive
telephone devices.
Subclass:
70
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
84 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.
SEE OR SEARCH CLASS:
174, 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.
307, Electrical Transmission or Interconnection Systems,
subclass 327 for protective systems for surge, transient or
parasitic current suppression in general.
310, Electrical Generator or Motor Structure, subclass 196
for dynamoelectric machine armature or primary winding
structure including corona discharge prevention means.
Subclass:
73
![[Patents]](../gifs/ps.gif)
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).
SEE OR SEARCH THIS CLASS, SUBCLASS:
84 for electric and/or magnetic shields which may be
disclosed as closed conductive members.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, 182 and 197
for short-circuited windings or conductors in field or
armature windings, respectively, for rotary dynamoelectric
machines.
Subclass:
75
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 73. Subject matter
wherein the coil and the conductive member are relatively
movable with respect to each other.
(2) Note. Illustrative examples are: [figure] [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
138 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.
SEE OR SEARCH CLASS:
331, Oscillators, subclass 181 for oscillator systems with a
variable inductance frequency determining means, which
variable inductance may be of the angularly adjustable vane
type.
Subclass:
77
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 75. Devices in
which a portion of the member is formed of magnetic
material.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
117 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.
130 for inductor devices having one or more coils and a
core, the core and a coil being relatively movable with
respect to each other.
221 for inductor devices comprising miscellaneous core and
coil combinations.
Subclass:
79
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 75. Devices in
which the member is movable about an axis of rotation.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
120 for inductor devices having relatively movable coils and
a core, a coil and a core being relatively movable as a unit
about an axis of rotation.
122 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.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
310, Electrical Generator or Motor Structure, 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.
324, Electricity: Measuring and Testing, 137 for meters
with eddy current rotors.
335, 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.
Subclass:
82
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
333, Wave Transmission Lines and Networks, 222 for high
frequency resonators of the distributed parameter type which
may include a rigid external conductive casing.
334, Tuners, 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.
Subclass:
83
![[Patents]](../gifs/ps.gif)
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+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
214 for inductors with cores wherein multiple separate
magnetic paths are provided in the core structure.
Subclass:
84
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69 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.
73 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.
82 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.
83 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.
90 for inductor devices with casings or housings not limited
by claimed subject matter to electric or magnetic shielding.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, 32 for
miscellaneous anti-inductive structures, see particularly
subclasses 35+ for miscellaneous electrical shields and
screen structures not elsewhere classifiable. The search
notes to subclasses 32+ indicate further fields of search for
anti-inductive and shielding structure.
307, Electrical Transmission or Interconnection Systems, 39
for anti-inductive means to prevent or modify the coupling
between electrical systems, particularly subclass 91 for
"shielding means".
310, Electrical Generator or Motor Structure, subclass 256
for stray field flux loss prevention by shielding means in
rotary dynamoelectric machines.
330, 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.
331, 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.
333, Wave Transmission Lines and Networks, subclass 12 for
transmission line inductive or radiation interference
reduction systems which include shielding means for the
purpose.
343, Communications: Radio Wave Antennas, subclass 842 for
loop type antennas with an electrical shield.
361, Electricity: Electrical Systems and Devices, 268 for
inductors with integral switch or capacitor means,
particularly subclass 270 for those inductive devices
structurally combined with a capacitor.
Subclass:
87
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 84. Subject matter
wherein means for adjustment of the inductance of the
inductor device are included.
Subclass:
90
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
55 for inductor devices having casings combined with means
to modify the temperature of the inductor. See especially
subclass 59 for vented casings.
65 for inductor devices having casings with external
mounting means.
82 for inductor devices wherein a unitary preformed coil or
winding forms the casing.
83 for inductor devices wherein the core forms a casing for
the windings.
SEE OR SEARCH 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 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.
220, Receptacles, appropriate subclasses for miscellaneous
box, housing or casing structure of general utility.
324, Electricity: Measuring and Testing, subclass 156 for
casings for electrical measuring instruments.
361, Electricity: Electrical Systems and Devices, 600 for
housings and mounting assemblies with plural diverse
electrical components.
Subclass:
92
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
65 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+.
Subclass:
94
![[Patents]](../gifs/ps.gif)
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.
Subclass:
96
![[Patents]](../gifs/ps.gif)
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).
SEE OR SEARCH THIS CLASS, SUBCLASS:
58 and 94, for inductors immersed in an insulating medium
which is in a fluid state.
Subclass:
98
![[Patents]](../gifs/ps.gif)
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.
Subclass:
100
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 574, for flywheels
and rotors with vibration damping means.
188, Brakes, 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.
248, Supports, 560 for resilient supports.
267, Spring Devices, appropriate subclasses, for
miscellaneous spring structures.
310, 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.
464, Rotary Shafts, Gudgeons, Housings, and Flexible
Couplings for Rotary Shafts, subclass 127 and 180 for shaft
couplings and shafting having vibration dampening
characteristics.
Subclass:
105
![[Patents]](../gifs/ps.gif)
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.
(2) Note. An illustrative example is: [figure]
Subclass:
107
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
343, Communications: Radio Wave Antennas, subclass 870 for
loop type antennas with a connector or terminals.
439, Electrical Connectors, appropriate subclasses for an
electrical connector, per se, generally.
Subclass:
110
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices s which are provided with a permanent magnet
to modify the magnetic flux distribution.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
155 for inductor devices having a winding adapted to be
energized by direct current to modify the magnetic flux
distribution of the device.
SEE OR SEARCH CLASS:
323, Electricity: Power Supply or Regulation Systems,
subclass 250, 330, and 362 for miscellaneous inductive
reactor systems where the reactor includes a permanent magnet
as a part thereof.
343, Communications: Radio Wave, subclass 788 for loop type
antennas with magnetic material.
Subclass:
115
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices having two coils which are relatively
movable with respect to each other.
(1) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
75 for inductor devices having a coil and a closed coil
which are relatively movable with respect to each other.
170 180+, 188, and 220, for inductor devices having plural,
nonrelatively movable coils or windings.
323 Electricity: Power Supply or Regulation Systems,
subclasses 216, 264, and 347 for inductor systems with
movable structure or windings.
330 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.
333 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.
334 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.
428 Stock Material or Miscellaneous Articles, subclass 591
for metallic stock having parts which are relatively movable
with respect to each other.
Subclass:
116
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 for adjustable inductor devices having means for varying
the number of turns of the coil by winding or unwinding the
coil.
137 for other inductor devices wherein the inductance change
is effected by changing the effective coil length and/or coil
connections.
SEE OR SEARCH CLASS:
323, Electricity: Power Supply or Regulation Systems,
subclass 255 and 340 for transformer systems with tapped
windings.
Subclass:
117
![[Patents]](../gifs/ps.gif)
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.
(2) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
40 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).
130 where the inductor device has a core movable with
respect to one or more coils.
333 Wave Transmission Lines and Networks, subclasses 177+ for
transformer coupled wave filters with magnetic core
inductances.
Subclass:
118
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are: [figure]
Subclass:
119
![[Patents]](../gifs/ps.gif)
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.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
77 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.
212 for inductor devices having core comprising plural parts
formed of unitary assemblages.
Subclass:
120
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 119. Subject matter
wherein the fixed core and coil unit is movable about an axis
of rotation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
122 for adjustable inductor devices having relatively
movable coils, the movable coil being movable about an axis
of rotation.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
Subclass:
121
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
115 for relatively movable coil inductor devices where one
coil is movable only in a linear path which is not parallel
to the coil axis of the other coil.
122 for relatively movable coil inductor devices where a
coil is movable only about an axis of rotation.
129 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.
Subclass:
122
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 115. Subject matter
wherein a coil is movable about an axis of rotation.
(1) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
79 for inductor devices which include a short-circuited coil
which is movable about an axis of rotation.
120 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.
121 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.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
Subclass:
123
![[Patents]](../gifs/ps.gif)
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.
(1) Note. An illustrative example is: [figure]
Subclass:
124
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are: [figure]
Subclass:
125
![[Patents]](../gifs/ps.gif)
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.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
122 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.
Subclass:
126
![[Patents]](../gifs/ps.gif)
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.
(2) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
170 for inductors having three or more nonmovable windings.
Subclass:
127
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 125. Subject matter
wherein the coils are similar and have a spherical shape.
(1) Note. The coil winding need not form a complete sphere,
but may only be a portion of a sphere.
SEE OR SEARCH THIS CLASS, SUBCLASS:
230 for the structure of spherical coils.
Subclass:
128
![[Patents]](../gifs/ps.gif)
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.
(2) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
199 for the structure of coils on a form and especially
subclass 208 for coil forms.
225 for the structure of coils having a special
configuration.
Subclass:
129
![[Patents]](../gifs/ps.gif)
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.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
119 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.
121 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.
Subclass:
130
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are:
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 where the inductor device has a deformable or distortable
coil or core.
40 where the movement between the coil and core is due to
the magnetic force existing between the coil and core.
77 where the core is a portion of a short-circuited
conductor or conductive member which is movable with respect
to the coil.
117 where the inductor device includes two coils which are
movable relative to each other, the core being movable
relative to at least one of the coils.
221 for the structure of coil and core not elsewhere
provided for.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
323, Electricity: Power Supply or Regulation Systems,
subclass 216, 264, and 347 for miscellaneous inductive
reactor systems where the reactor includes a relatively
movable core and coil.
330, Amplifiers, subclass 169 for amplifiers having
transformer coupling including means for adjusting inductive
coupling of the transformer.
334, 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.
343, Communications: Radio Wave Antennas, subclass 748 for
loop type antennas with a variable reactance for tuning the
antenna.
Subclass:
131
![[Patents]](../gifs/ps.gif)
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.
(2) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
170 182+, 188, and 220, for the structure of nonadjustable
inductive devices having plural windings (e.g.,
transformers).
SEE OR SEARCH CLASS:
333, Wave Transmission Lines and Networks, 24 for coupling
networks including plural coils with plural cores, and
particularly subclasses 177+ for transformer coupled wave
filters with magnetic core inductance.
334, Tuners, subclass 77 for tuners having variable
inductors which are gang operated.
Subclass:
132
![[Patents]](../gifs/ps.gif)
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.
(2) Note. Illustrative examples are:
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
221 for inductive devices with plural part cores in
general.
Subclass:
133
![[Patents]](../gifs/ps.gif)
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: [figure]
[caption]MOVABLE CORE SHUNTS FLUX GENERATED BY ONE COIL FROM
OTHER COIL.
(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. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
160 for inductive regulators, without relatively movable
parts, having a magnetic shunt.
Subclass:
134
![[Patents]](../gifs/ps.gif)
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.
(2) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
155 for inductive regulators, with no relatively moving
parts having an air gap.
178 for inductive devices with a closed core interrupted by
an air gap, generally.
Subclass:
135
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 134. Subject matter
wherein the movable core portion is movable about an axis of
rotation.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
120 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.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
Subclass:
136
![[Patents]](../gifs/ps.gif)
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.
(2) Note. An illustrative example is: [figure]
Subclass:
137
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are: [figure] [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 where the effective number of turns of the coil is varied
by winding or unwinding the coil conductor.
116 where one of the coils is also movable with respect to
another of the coils.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
323, Electricity: Power Supply or Regulation Systems,
subclass 255 and 340 for transformer systems with tapped
windings.
334, Tuners, 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.
343, 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.
Subclass:
138
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
184 for nonadjustable plural coil winding inductive devices
where coils have different axes or are mounted on different
core legs.
SEE OR SEARCH CLASS:
333, Wave Transmission Lines and Networks, 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.
Subclass:
139
![[Patents]](../gifs/ps.gif)
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.
(2) Note. An illustrative example is: [figure]
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 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.
334, Tuners, 72 for tuners having a variable inductor of the
type in which a movable contact is adjusted over the length
of the inductor.
338, Electrical Resistors, 143 for mechanically variable
electrical resistors in which the contact terminal moves
along the turns of the helical resistance element.
Subclass:
140
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Illustrative examples are: [figure]
Subclass:
141
![[Patents]](../gifs/ps.gif)
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.
(1) Note. an illustrative example is: [figure]
Subclass:
142
![[Patents]](../gifs/ps.gif)
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.
(3) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 for inductor devices where the length of the coil
conductor is changed by winding or unwinding the conductor on
the coil.
115 for inductor devices which are provided with relatively
movable coils for changing the effective inductance of the
device.
149 for inductor devices where the effective length of the
coil conductor is changed by sliding a contactor along the
coil winding.
150 for inductor devices wherein the inductor is provided
with taps and a tap changing switch is provided.
SEE OR SEARCH CLASS:
323, Electricity: Power Supply or Regulation Systems,
subclass 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.
331, Oscillators, subclass 179 for oscillator systems
wherein the generated oscillation frequency may be changed in
discrete steps by inductance coil substitution.
334, Tuners, 47 for switch type tuners.
Subclass:
143
![[Patents]](../gifs/ps.gif)
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.
(1) Note. An illustrative example is: [figure]
Subclass:
144
![[Patents]](../gifs/ps.gif)
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.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 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.
73 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.
138 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.
Subclass:
145
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
116 where the coils are also movable relative to each
other.
138 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.
170 182+, 188, and 220, for the structure of nonadjustable
inductive devices having plural windings (e.g.,
transformers).
SEE OR SEARCH CLASS:
330, Amplifiers, subclass 169 for amplifiers having
transformer coupling including means to adjust the inductive
coupling.
Subclass:
146
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 145. Subject matter
having means for changing the coil length and/or connections
of a plurality of the coils.
SEE OR SEARCH THIS CLASS, SUBCLASS:
138 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.
143 where one of the coils is provided with connection
reversing means.
144 where one of the coils is provided with means to vary
the number of short- circuited turns.
Subclass:
147
![[Patents]](../gifs/ps.gif)
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.
(3) Note. Illustrative examples are: [figure]
SEE OR SEARCH CLASS:
323, 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.
Subclass:
148
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 145. Subject matter
in which a coil portion forms at least a part of a plurality
of coils.
(1) Note. Included in this subclass are auto-transformers.
(2) Note. An illustrative example is: [figure]
Subclass:
149
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
138 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.
139 where the coil is a helical coil or spiral and the
contactor follows the conductor so as to make continuous
contact with the coil conductor.
150 for inductor devices with a tap changing switch.
Subclass:
150
![[Patents]](../gifs/ps.gif)
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.
(1) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
139 where the coil is a helical coil or spiral, and the
contactor follows the conductor so as to make
continuous-contact with the coil conductor.
142 where the connections to the coil are changed by moving
the coil (i.e., movable coil and fixed contacts).
149 where a contactor slides along the coil conductor,
making direct contact with the coil conductor.
SEE OR SEARCH CLASS:
307, 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.
310, 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.
323, Electricity: Power Supply or Regulation Systems,
subclass 255 and 340 for transformer systems with tapped
windings.
Subclass:
155
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
110 for inductor devices having a magnetic bias produced by
a permanent magnet.
178 for closed type cores with their magnetic path
interrupted by an air gap.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, appropriate
subclasses, particularly 179 for analogous generator or
motor structure, and especially indented subclass 193 for
generator or motor structure having nonmagnetic inserts or
air gaps.
315, Electric Lamp and Discharge Devices: Systems,
particularly subclass 282 for discharge device with a
regulating transformer in the supply circuit.
318, Electricity: Motive Power Systems, subclass 513 for
electric motor armature circuit control systems utilizing a
saturable reactor.
322, Electricity: Single Generator Systems, particularly
subclass 57 for dynamoelectric generators with means to
saturate a portion of the generator magnetic structure.
323, 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.
330, Amplifiers, subclass 8 for magnetic amplifiers (having
a saturable reactor active element).
331, 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.
332, Modulators, particularly subclass 173 for amplitude
modulators which may utilize saturable inductors.
Subclass:
160
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, particularly
subclass 190 for rotary dynamoelectric machine field
structure having magnetic shunts for shifting the field
flux.
322, Electricity: Single Generator Systems, particularly
subclass 50 for dynamoelectric generator control means
including a magnetic shunt for the field flux.
Subclass:
165
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 160. Subject matter
having an air gap in the auxiliary magnetic path.
(1) Note. The air gap may interrupt the auxiliary magnetic
path partially or completely, and may constitute a
nonmagnetic spacer or filler material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
134 for relatively movable core and coil inductor apparatus
having an adjustable air gap.
178 for closed type cores interrupted by an air gap wherein
the purpose of the air gap is not disclosed as subject matter
for subclasses 155+.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, subclass 192
for generator or motor winding and core structure having
nonmagnetic inserts or gaps.
Subclass:
170
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and see (1) Note above.
73 and see (2) Note above.
115 for inductive devices with relatively movable coils
which may have three or more windings.
130 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.
137 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.
155 for inductive regulators which have plural windings.
182 for inductor devices with two windings at least one of
which is a plural coil winding.
188 for inductor devices having two windings with mutually
crossed turns.
214 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.
220 for inductive devices having two windings, not elsewhere
provided for.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, 184 and 198+
for plural field windings and plural armature or primary
windings, respectively, for rotary dynamoelectric machines.
323, Electricity: Power Supply Regulation Systems,
particularly 48 for transformer systems with plural primary
and/or secondary windings, and subclasses 83+ for inductor
systems in general having plural windings.
330, Amplifiers, 165, 188+, and 195+ for amplifier systems
having transformer coupling, particularly subclasses 171,
190, and 197 where transformer structure is involved.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, subclass 291 for electromagnets of the
lifting, traction and related types.
343, Communications: Radio Wave Antennas, subclass 867 for
plural loop type antennas.
Subclass:
171
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
184 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.
SEE OR SEARCH CLASS:
333, 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.
Subclass:
172
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
73 for closed or short-circuited turns enclosing less
cross-section of a flux path than those enclosed by full
turns of the inductor.
133 and 160+, for inductor devices of the adjustable or
regulating type having core structures including a separate
and distinct shunt magnetic path structure.
Subclass:
173
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
73 and see (2) Note, above.
82 for inductors where a coil forms the casing thereof and
which may involve interlinked coils.
175 for a core surrounding a linear conductor.
180 and see (1) Note, above.
187 and see (1) Note, above.
188 and see (1) Note, above.
189 and see (1) Note, above.
195 for inductors where one coil has a conductor which
receives another coil in a groove, recess, or hollow space of
such conductor.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, 179 for
winding and core structures for rotary dynamoelectric
machines, appropriate subclasses of which may have
interlinking coils.
324, 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).
Subclass:
174
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
175 for linear conductors surrounded by magnetic cores.
Subclass:
175
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
173 for inductors with interlinked coils or windings (e.g.,
current transformers).
221 for the combination of a core and coil in general and
not elsewhere classified.
233 for magnetic core structure in general not elsewhere
classified.
SEE OR SEARCH CLASS:
324, 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.
Subclass:
176
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
132 for inductors with relatively movable core parts for
varying the inductance of the inductor.
210 for inductors with core clamps, wedges or fasteners.
212 for inductor cores formed of plural parts.
216 for joint structure of cores.
Subclass:
177
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213 for cores formed of wound strip or filamentary
material.
222 for windings of inductors generally, including windings
whose conductors are constructed of a special material.
233 for magnetic cores of inductors generally, particularly
for cores of special materials.
SEE OR SEARCH CLASS:
252, Compositions, 62.51 for the compositions of magnetic
materials generally.
428, Stock Material or Miscellaneous Articles, 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.
Subclass:
178
![[Patents]](../gifs/ps.gif)
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+.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, subclass 192
for electric generator or motor winding and core structure
having nonmagnetic inserts or air gaps.
Subclass:
179
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
252, Compositions, subclass 70 for compositions having
specific temperature response characteristics.
324, Electricity: Measuring and Testing, 105 for electric
meters with thermal compensation means.
334, Tuners, 5 for condition responsive tuners which may
involve coils with temperature compensating means.
361, 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.
428, Stock Material or Miscellaneous Articles, 616 for a
metallic composite which is arcuately deflectable by a
temperature change.
Subclass:
180
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for inductors of the polyphase type which may include
windings with plural coils.
73 and 115+, for relatively movable coils which may include
windings with plural coils.
131 for relatively movable core and coil which may include
windings with plural coils.
137 for inductors with means to change coil length or
connections which may include windings with plural coils.
155 for inductive regulators which may have windings with
plural coils.
170 for inductors with three or more windings wherein at
least one of said windings may be comprised of plural coils.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, 179 for
winding and core structure for dynamoelectric machines,
appropriate subclasses of which may include windings having
plural coils.
323, Electricity: Power Supply or Regulation Systems, 44
for transformer systems, and subclasses 82+ for reactors
appropriate subclasses of which may include windings with
plural coils.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 291 for structure of lifting, holding
and similar magnets, appropriate subclasses of which may
include windings with plural coils.
Subclass:
181
![[Patents]](../gifs/ps.gif)
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).
SEE OR SEARCH THIS CLASS, SUBCLASS:
83 for inductors completely enclosed by a core.
84 for inductors with electric and/or magnetic shielding
means.
189 for coils with crossed turns, which may be wound to
reduce external fields.
225 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.
Subclass:
182
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for inductors with two or more windings adapted for
polyphase use.
170 for inductors with three or more windings.
220 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.
SEE OR SEARCH CLASS:
330, Amplifiers, 165, 188+, and 195+ for amplifier systems
having transformer coupling, particularly subclasses 171,
190, and 197 where trans
Subclass:
182
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for inductors with two or more windings adapted for
polyphase use.
170 for inductors with three or more windings.
220 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.
SEE OR SEARCH CLASS:
330, Amplifiers, 165, 188+, and 195+ for amplifier systems
having transformer coupling, particularly subclasses 171,
190, and 197 where transformer structure is involved.
Subclass:
183
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69 for inductors with coil balancing means which may also
have plural coil windings with interposed coils.
Subclass:
184
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 for adjustable inductors wherein a coil conductor is
wound from one coil supporting form to another having a
different axis.
69 for inductors with coil capacitance balancing means which
also may have a winding with plural coils distributed on
different axes or different core legs.
115 for relatively movable coils particularly subclasses 121
and 122+ which may have plural windings distributed on
different axes or core legs.
131 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.
137 for inductors with means to change coil length or
connections which may have windings with plural coils
distributed on different axes or core legs.
155 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.
170 for inductors with three or more windings of which one
may be plural coil with the coils distributed on different
axes or core legs.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, particularly
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.
Subclass:
185
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 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.
65 for supports for inductors in general designed to support
the inductor with respect to its environment.
92 for supports for inductors with casing where the support
is specifically adapted to maintain the inductor fixed
relative to the casing.
195 for inductors wherein one coil having a grooved, hollow
or recessed conductor portion supports another coil within
said portion.
196 for supporting or spacing means between coil and core of
an inductor, particularly subclass 198 indented thereunder
for preformed insulation between coil and core.
199 and see (1) Note above.
209 for inductor coils with outer windings or binders.
Subclass:
186
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
138 for inductors with parallel spaced conductors or coils
bridged by a movable connector.
147 for inductors having plural coils or windings connected
in parallel or series and parallel.
180 and see (1) Note, above.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, particularly
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.
Subclass:
187
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
188 for plural windings with mutually crossed turns.
189 for a coil with crossed turns.
SEE OR SEARCH CLASS:
174, 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.
Subclass:
188
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
75 and 115+, for inductors with relatively movable coils
whose respective conductors may cross at different positional
adjustments of the coils.
173 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.
182 for plural windings with plural coils.
189 for coils wherein the coil conductor crosses at a
plurality of points in successive convolutions of the coil
conductor.
Subclass:
189
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
172 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.
173 for inductors with interlinked coils.
187 and see (1) Note, above.
188 and see (1) Note, above.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, appropriate
subclasses under 179+, which include coils and windings with
crossed turns particularly subclass 206 and 207 for lap and
wave windings.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 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.
Subclass:
190
![[Patents]](../gifs/ps.gif)
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).
SEE OR SEARCH THIS CLASS, SUBCLASS:
75 and 115+, for inductors with relatively movable coils and
wherein the conductors of the coil conductors may mutually
cross.
188 for inductors with plural windings having mutually
crossed turns.
SEE OR SEARCH CLASS:
428, Stock Material or Miscellaneous Articles, subclass 593
for metallic stock material of honeycomb configuration.
Subclass:
191
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
232 for disc type coils.
Subclass:
192
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15 for coil end holding means associated with coil winding
or unwinding.
107 and see (1) Note above.
185 for coil supports and spacers for plural coil windings,
particularly for coil end or connecting means between coils
having such supports or spacers.
199 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.
223 for inductor windings with coil conductor of particular
shape.
SEE OR SEARCH CLASS:
24, Buckles, Buttons, Clasps, etc., 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.)
29, Metal Working, appropriate subclasses for methods of
manufacture and special apparatus for assembly and
disassembly of metal articles and the like, generally
particularly 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.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
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.
174, Electricity: Conductors and Insulators, appropriate
subclasses for electrical conductor and insulator structure
in general, particularly, 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.
191, Electricity: Transmission to Vehicles, particularly
12.2 for flexible electrical conductors having an end
secured to a reel structure and adapted to be wound thereon.
242, Winding, Tensioning, or Guiding, 379 and 125+ for means
to connect an end of an elongated material to a spool or
core.
248, Supports, for supports of general application,
particularly 49 for pipe or cable supports, and subclasses
329+ for cord supported reels.
310, Electrical Generator or Motor Structure, particularly 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.
343, Communications: Radio Wave Antennas, subclass 867 for
loop type antennas with plural taps or tapped coils.
439, Electrical Connectors, appropriate subclasses for
electrical connectors, generally. Search especially 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.
Subclass:
195
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62 for inductors with hollow conductors adapted for passage
of cooling fluid there-through.
65 for inductors with means to support them relative to
their environment.
82 for inductors where coil forms casing. See (2) Note
above.
92 for inductors with means to support them relative to an
enclosing casing.
185 for inductor coil supports or spacers for plural coil
windings. See also (1) Note, above.
199 for inductor coil or coil turn supports.
220 for inductors with plural windings generally not
elsewhere provided for.
223 for windings having a coil conductor of particular
shape.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, particularly 28
for co-axial or concentric conductors, subclasses 102+ for
conductors with conductive armor or sheath, subclasses 113+
for electrical conductor structure, per se.
428, Stock Material or Miscellaneous Articles, 544 for stock
materials, e.g., of indefinite length which are all metal or
have adjacent metal components.
Subclass:
196
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 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.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, 179 for
windings and core structure for rotary dynamoelectric
machines, particularly subclass 215 for core slot liners for
insulating winding conductors from the core.
Subclass:
197
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
210 for inductors having means to clamp, wedge, or otherwise
fasten elements of the core, such as magnetic laminations,
together.
SEE OR SEARCH CLASS:
248, Supports, subclass 499 for tie downs and subclasses
500+ for holddowns of general application.
310, 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.
Subclass:
198
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for preformed spacing means to establish ventilating
passages inside an inductor for cooling.
185 for preformed coil spacing and support means in plural
coil windings.
199 for coil or coil turn support spacers, particularly
indented subclass 208 for coils on preformed supports or
mounts.
209 for inductors with outer coil wrappers or binders.
219 for core insulation between laminations or core parts.
SEE OR SEARCH CLASS:
310, 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.
Subclass:
199
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for ventilated inductors with spacing means to provide
passageways between coils or windings for cooling fluids.
65 for coils and means to support them relative to their
environment.
82 for coils which form a casing for the inductor.
92 for coil supports where the inductor is specifically
supported within and relative to a casing.
107 for coil support features included in or in combination
with terminals of the quick detachable type.
179 for coil supports including temperature compensation
means (e.g., coils on temperature invariant coil forms).
185 and see (1) Note above.
192 for such coil support features associated with coil and
anchoring means, terminals or taps.
195 for coils supported in a grooved or hollow conductor.
196 for coil turn supports or spacer means associated with
support or spacing between coil and core.
SEE OR SEARCH CLASS:
29, Metal Working, particularly 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.
310, Electrical Generator or Motor Structure, particularly
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.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 291 for the structure including coil,
coil conductor supports or spacers, for electromagnets of the
lifting, holding or tractive type.
343, Communications: Radio Wave Antennas, 866 for loop type
antennas with coil or coil turn supports or spacers.
Subclass:
200
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH CLASS:
29, Metal Working, especially 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.
101, 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).
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
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.
204, 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.
361, Electricity: Electrical Systems and Devices, 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.
439, Electrical Connectors, especially 55 for an electrical
connector combined with a preformed panel circuit arrangement
(e.g., printed circuit board).
451, Abrading, 28 for a process for producing a surface
effect by abrading.
455, Telecommunications, 334 for components restricted to
use in radio apparatus and which may be of the printed
circuit type.
Subclass:
205
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
96 for potted-type inductors wherein the preformed inductor
is embedded in plastic, electrically insulating material.
189 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.
SEE OR SEARCH CLASS:
29, Metal Working, especially 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.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
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.
174, 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.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, appropriate subclasses, for processes within the
class definition, for molding or shaping plastic materials.
See particularly 272.11 which pertain particularly to
electrical component encapsulating.
338, Electrical Resistors, 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.
425, Plastic Article or Earthenware Shaping or Treating:
Apparatus, 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.
Subclass:
206
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
185 and see (1) Note above.
191 for basket weave type coils wherein flexible filament or
strip material is interwoven with the coil conductor.
205 for similar coil structures wherein the coil conductors
or coils are cemented to or embedded in the flexible
filament, strip or sheet insulation.
209 and see (2) Note above.
SEE OR SEARCH CLASS:
29, Metal Working, particularly 602.1 for processes of
manufacture assembly or disassembly of inductor devices
including the utilization of flexible insulating material in
the manufacture thereof.
156, 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.
174, Electricity: Conductors and Insulators, particularly
120 and 124, for conductors covered with flexible sheet
insulating material, and subclass 143 for condenser type
bushings utilizing flexible sheet insulating material.
242, Winding, Tensioning, or Guiding, 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.
Subclass:
207
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for coil turn or coil spacing means which forms spacers
for passage of ventilating or cooling fluids.
62 for spacers to separate or support the turns of hollow
conductors (adapted for flow of cooling fluid through the
conductor).
135 for coil turn spacing or coil spacing means or support
means for plural coil windings.
136 for coil spacing means or supports associated with
parallel connected conductors.
138 for plural windings with mutually crossed turns
including coil conductor spacing means.
139 for coils with crossed turns which include coil
conductor spacing means or wherein the crossed turns
inherently act as spacers.
179 for coil turn spacing means associated with means for
compensating for inductance changes caused by temperature
changes.
195 for coils with grooved or hollow conductors for
supporting and spacing a conductor of another coil.
196 for the combination of coil and core having spacing or
supporting means between coil and core.
200 for printed circuit type coils.
205 for coils wherein the coil turns are cemented to a
support or are embedded in a plastic material.
206 for coils or coil conductor turns separated by flexible
filament strip or sheet insulation.
Subclass:
208
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
173 for interlinked coils having preformed supporting
means.
179 for coils having supports or forms adapted to remain
invariant in dimensions or which compensate for changes in
ambient temperature of the device.
185 for preformed supports for plural coil windings.
195 for coils with grooved or hollow conductors for
supporting the conductor of another coil.
196 particularly indented subclass 198 for preformed
electrical insulation between a coil and associated core.
SEE OR SEARCH CLASS:
191, Electricity: Transmission to Vehicles, particularly
12.2 for flexible electrical conductors and combined take up
reels.
242, Winding, Tensioning, or Guiding, 600 and 118+ for spool
construction of general use.
310, Electrical Generator or Motor Structure, particularly
subclass 194 for field coil supports and spools for rotary
type dynamoelectric machines.
Subclass:
209
![[Patents]](../gifs/ps.gif)
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
90 for inductors with casings or housings.
185 and see (1) Note above.
192 for windings with terminals, taps or coil end anchoring
means which may utilize flexible sheet or strip insulation.
206 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.
Subclass:
210
![[Patents]](../gifs/ps.gif)
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.
(1) Note. Cores wherein the core parts are held together by
interfitting or interlocking portions of the core parts or by
adhesive material, such as cement, are excluded from this
subclass. For such subject matter search the subclasses
below, particularly subclasses 212, 216+, 219, and 233+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for inductors with means to deform or distort the core to
adjust its inductance.
65 for inductors having means for supporting the inductor
relative to its environment.
92 for inductor with casing or housing means with means to
support the inductor with respect to such casing or housing.
96 for inductor with casing or housing means wherein the
inductor is embedded in plastic material.
98 for inductors with casings and wherein the core is
clamped between portions of the casing so that a portion of
the core is exposed.
100 for inductors with means, in addition to the core part
fastening means, for inhibiting or damping core vibrations.
132 for adjustable inductor structures with relatively
movable core parts and having means for holding the plural
parts of the core with respect to each other.
176 for inductors having a core with a pivot or hinge
between elements thereof.
196 for supporting and spacing means between coil and core.
212 for inductors wherein the core is comprised of plural
parts which have interlocking or interfitting portions.
214 for multiple magnetic path cores.
216 for inductors having cores with particular joint
structure.
219 for inductors with core insulation (e.g., between
laminations).
233 for core structure generally, especially indented
subclass 234 for laminated core structure.
SEE OR SEARCH CLASS:
24, Buckles, Buttons, Clasps, etc., appropriate subclasses
for various types of fastening means in general (e.g.,
clasps, bale and package ties, strap fasteners and the
like).
248, Supports, appropriate subclasses for article supports in
general, particularly subclass 361 for holddowns.
310, Electrical Generator or Motor Structure, particularly
subclass 217 for core structures for rotary type
dynamoelectric machines with means for securing core
laminations, and subclass 218 for pole assembly and securing
means.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 291 for lifting, holding or traction
magnets which may include means for fastening core parts
together.
403, Joints and Connections, appropriate subclasses for
joints of general utility.
Subclass:
211
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising inductor core structure formed of
concentric, nested, or telescoped core elements of magnetic
material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
83 for inductors where the core forms the casing of the
device.
84 for inductors having magnetic shielding means which may
be of the concentric type.
177 for inductors having coils with coil conductors of
magnetic material.
213 for wound cores.
233 for general core structure not elsewhere provided for,
particularly subclass 234 indented thereunder for laminated
cores.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, 10 for
dynamoelectric machine structure, particularly indented
subclasses 14, 23+, 30, and 34+, for nonrotary type machines
having concentric element core structures wherein one of the
elements is a plunger armature, and subclasses 40+,
appropriate subclasses, for rotary type machines with
concentric type relatively rotatable core elements.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 256 for concentric core structure for
plunger type armatures and subclasses 291+ for lifting,
holding or tractive type magnets with diverse core elements
wherein one of the elements is a plunger armature.
Subclass:
212
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising a core of preformed parts, each
part of which may be a single integral structure of magnetic
material or wherein each part may be built up of separate
sheets or wires of magnetic material (e.g., and assemblage of
preformed laminated magnetic leg or yoke members).
SEE OR SEARCH THIS CLASS, SUBCLASS:
10 20, 40+, 60, 61, 77, 83, 84+, 98, 100, 110, 117+, 130+,
155+, 172, 175+, 177, 178, 184, 196+, 210, and 211, for
combinations of coil and core wherein the core may be of the
plural part type. See particularly subclass 176, above, for
plural part cores which are hinged for relative angular
movement to permit insertion of a coil or coil conductor, and
see also, subclass 210 above for plural part cores combined
with means such as a clamp or wedging means, to hold the core
parts together.
233 for core structure in general and note especially the
search notes listed thereunder as to other fields of search
for core structure including plural part core structure.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, particularly
216 for dynamoelectric machine core features, including
plural part cores, subclasses 254+ for stator core
structures, and subclasses 261+ for rotor core structures.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 296 for various core structures wherein
one section may be an operator for an electric circuit
breaker.
Subclass:
213
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising inductor core structure formed of
a continuous, wound strip or filament of magnetic material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
177 for inductors wherein the coil conductor is of magnetic
material.
211 for inductor cores formed of separate concentric or
nested core elements.
SEE OR SEARCH CLASS:
29, Metal Working, particularly subclass 605 for inductor
assembly including winding or coiling of core material and
subclass 609 for laminating core material, including winding
and coiling, in general.
72, Metal Deforming, subclass 66, 135+ and 146+ for a method
of or a means for bending metal into helical or spiral coil
form.
140, Wireworking, appropriate subclasses for methods and
apparatus for winding and for shaping wire of magnetic
material to form cores.
148, Metal Treatment, appropriate subclasses, particularly
100 for working, including winding and coiling, and heat
treatment of magnetic core materials.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
appropriate subclasses for processes and apparatus for making
laminated products not provided for elsewhere, e.g., by
assembling, winding, wrapping, folding, etc., of filaments,
sheets or webs.
242, Winding, Tensioning, or Guiding, 430 for a process or
apparatus for forming an article by winding material onto a
core.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses, for a stock material product in the form of a
single or plural layer web or sheet not elsewhere provided
for, and especially 364 for a structurally defined or coated
rod, strand, fiber or filament, which may be of a magnetic
material.
Subclass:
214
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising inductor core structure with more
than one independent and distinct closed loop of magnetic
material, the loops forming closed magnetic circuits adapted
to thread through and about the coil means of the inductor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for similar structures limited by claimed subject matter
to polyphase inductor structure.
83 for inductors wherein the coil means is totally enclosed
within the core means, except for openings for the coil
leads.
155 particularly 160+, for inductors of the saturable or
high leakage reactance type having cores with multiple
magnetic paths.
184 for inductors with plural coil windings wherein the
coils may be on different core legs.
211 for inductors with concentric or nested core elements
which may form separate magnetic loops.
212 for inductors having plural part cores, e.g., separate
preformed leg and yoke members forming separate magnetic
loops.
213 for inductors having a core comprising separate loops
each formed of wound magnetic material.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, particularly
179, 254+ and 261+ for rotary type dynamoelectric machine
core structure involving plural magnetic paths.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 289 for lifting, holding and tractive
electromagnets in general which may have plural separate
magnetic paths.
Subclass:
215
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 214. Subject matter
wherein the number of independent and distinct closed loops
of magnetic material is three or more.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for similar structures limited by claimed subject matter
to polyphase inductor structure which may have three or more
separate magnetic paths relative to a particular coil.
Subclass:
216
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor device comprising the particular core structure at
the point of juncture of magnetic elements or parts of the
core. The elements or parts are usually the leg and yoke
members of the core.
SEE OR SEARCH THIS CLASS, SUBCLASS:
132 for inductors having plural joined core parts with means
to permit relative movement therebetween for adjusting the
inductance of the device.
165 and 178, for inductor cores having a high reluctance gap
in the magnetic circuit, which gap may be bridged by
nonmagnetic material to effect a joint between the two
opposed parts of the core.
173 for inductors having a core with a joint comprising
hinged parts to permit clamping of the core about a conductor
or coil means.
210 for inductor core joint structure with means, in
addition to the core elements themselves, to clamp, wedge or
otherwise hold the core elements together.
212 for inductor cores comprising an assemblage of preformed
core parts (such as leg sections and yoke sections) which
include significant joint structure between the parts.
213 for inductor cores having joints between core elements
of coiled or wound magnetic material.
214 for inductor cores with core elements providing multiple
magnetic paths and having significant joint structure between
the elements.
SEE OR SEARCH CLASS:
29, Metal Working, 602.1 for processes of manufacture
assembly of inductor devices, especially indented subclass
606 for assembly of coil and core, and subclasses 607+ for
core assembly. Apparatus for assembling an electrical
inductor device may be found in subclasses 729+, and a device
for securing parts together by a hollow rivet, when not
elsewhere classifiable, may be found in subclass 243.52.
228, Metal Fusion Bonding, 101 for a process of
metallurgically bonding an electrical connection and
especially subclasses 179+ for a process of a metallurgically
bonding plural joints of electrical devices. See the search
notes in Class 228 for other classes and subclasses providing
for making electrical joint structure.
310, Electrical Generator or Motor Structure, 10 for
dynamoelectric machine structure, indented subclasses 40+ for
rotary machines particularly subclasses 179+ for winding and
core structure of rotary machines, subclasses 216+ indented
under subclass 179, providing for core features including
joint structure, subclasses 254+ providing for stator
structure in general, while subclasses 261+ provides for
rotor structure in general, which structures may include
joint structure.
403, Joint and Connections, appropriate subclasses for joints
of general utility.
Subclass:
217
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 216. Subject matter
wherein the elements or parts comprising the core joint
consists of groups of plates or laminations of magnetic
material, which are interleaved at the core joint.
SEE OR SEARCH THIS CLASS, SUBCLASS:
210 for inductor cores, usually of the laminated type, with
clamps, wedges or fasteners to hold the laminations together
at the core joint.
211 for inductor cores comprising concentric or nested core
elements with joint structure between elements.
213 for inductor cores comprising wound magnetic material
with joint structure between core elements.
214 for inductor cores with core elements, usually of the
laminated type, providing multiple magnetic paths, the
laminations of different core elements being interleaved to
form joints.
SEE OR SEARCH CLASS:
29, Metal Working, particularly subclass 609 for the process
of manufacture assembly or disassembly of inductor cores of
the laminated type including the interleaving of core
laminations to form core joints.
310, Electrical Generator or Motor Structure, 216,
particularly indented subclass 217 for core structure for
rotary dynamoelectric machines involving the securing of
laminae to provide core joints. See also the reference to
other subclasses in Class 310 (which may include laminated
core joints of the interleaved type) under "SEARCH CLASS",
appended to subclass 216 above.
Subclass:
218
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices wherein the core is built up of elements of
directionally prestressed material so arranged as to exhibit
desired directional magnetic and/or electric properties.
Usually the desired directional property is produced by
taking advantage of the anisotropy of the crystal structure
of the magnetic material by rolling and then heating to
orient the grain structure, the permeability of the resultant
product being a maximum in the direction of rolling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for inductors wherein a change in inductance is effected
by physically distorting the core.
SEE OR SEARCH CLASS:
29, Metal Working, especially 607 for the process of
manufacture, assembly or disassembly of inductor cores in
general, and indented subclass 609 for laminated cores in
particular, which cores may include grain oriented magnet
material.
148, Metal Treatment, 100 for processes of altering the
internal structure of metalliferous materials to influence
their magnetic properties, particularly subclass 104 relating
to the production of dust cores, and subclasses 300+ for
magnetic stock resulting from such processes.
428, Stock Material or Miscellaneous Articles, 554 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.
Subclass:
219
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising a core built up of elements of
magnetic material separated from each other by elements of
electrically insulating material. Laminated cores with
electrical insulation between the magnetic laminations of the
core are in this subclass.
(1) Note. For other classes providing for processes of
forming laminations, laminating, or to the resulting
products, see classes listed under "SEARCH CLASS", of
subclass 234 of this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for core structure having insulating spacers between core
parts to provide ventilating passages for the core.
61 for core structure having heat exchanging surfaces
between core parts and insulated therefrom.
100 for inductors wherein the core parts may be separated by
resilient insulating material to damp out electro-mechanical
vibrations produced by the inductor.
134 for inductors with an adjustable air gap between
relatively movable core parts.
165 for inductors of the high leakage reactance type wherein
the core has a shunt path with an air gap.
177 for inductors with a coil formed of an electrically
insulated conductor of magnetic material.
178 for inductors with a closed type core having an air
gap.
198 for inductors with preformed electrical insulation
between coil and core.
211 for inductors with a core comprising concentric or
nested magnetic elements with electrical insulation between
elements.
212 for inductors with plural part cores (e.g., an
assemblage of preformed leg and yoke portions) with
electrical insulation between core parts.
213 for inductors with a core formed of a continuous, wound
strip of magnetic material with electrical insulation between
turns.
216 for inductors having core joint structure wherein
electrical insulation may be disposed between the core parts
of the joint.
234 for the structure of laminated cores in general.
SEE OR SEARCH CLASS:
29, Metal Working, 602.1 for processes of manufacture,
assembly or disassembly of electromagnets, transformers and
inductances, particularly indented subclass 609 for laminated
core manufacture.
Subclass:
220
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising an inductor having two windings,
each winding constituting a coil adapted to be connected to
an external circuit and not provided for in any of the
preceding subclasses.
(1) Note. Plural coils adapted to be connected in series
and/or parallel are not considered to constitute plural
windings for classification in this subclass, but are
considered a single winding formed of plural coils and are
classifiable, in particular in subclasses 145+, especially
indented subclass 147, for such combinations with coil length
or connection changing means, and subclasses 180+ for such
combinations where no inductance adjusting means is claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for inductors having polyphase windings.
73 115+, for inductors having two or more relatively movable
coils, each coil acting as a separate winding.
130 for inductors having relatively movable core and coil
means, wherein the coil means may be two or more windings.
In particular, indented subclass 131 provides for plural
coils (or windings) with plural cores.
137 for inductors with means to change coil length or
connections and wherein two or more coils constituting
separate windings may be included (see (1) Note, above).
155 for saturable core or high leakage reactance type
inductors, especially subclasses 160+ for transformers with
primary and secondary windings with a magnetic shunt
therebetween.
170 for inductors with three or more windings.
173 for inductors with at least two coils or windings which
are physically interlinked.
180 for inductors with at least one winding formed of plural
coils, particularly subclasses 182+, for plural windings at
least one of which is formed of plural coils. See also the
reference to subclasses 180+ in (1) Note above.
188 for inductors having plural windings with mutually
crossed turns.
195 for inductors wherein a coil or winding is supported
within the grooved or hollow conductor of another coil or
winding.
199 for inductors having particular coil turn or coil or
winding supports or spacers.
SEE OR SEARCH CLASS:
178, Telegraphy, subclass 43 for systems utilizing plural
windings for transmitting and receiving telegraph signals
through appreciable space by means of an inductive field,
subclass 49 for transformers or reactors utilized for
superposed current signaling and subclass 64 for coil
transformers employed in telegraph systems.
191, Electricity: Transmission to Vehicles, subclass 10 for
inductively coupled means comprising a winding mounted on one
body and another winding mounted on another body, the bodies
being relatively movable, electric power being transmitted
from one winding to the other wholly through the induction
field.
219, Electric Heating, 50, especially subclass 116, for metal
heating systems utilizing plural winding transformers.
246, Railway Switches and Signals, subclass 8 and 29 for
railway signaling systems utilizing transmitting and
receiving windings mutually coupled through appreciable space
by means of the induction field.
307, Electrical Transmission or Interconnection Systems,
appropriate subclasses for miscellaneous electrical systems
using plural winding inductors, note particularly subclass 7,
17, and 83 for systems utilizing transformers.
310, Electrical Generator or Motor Structure, 10 for
dynamoelectric machine structure, especially subclasses 179+
for winding and core structure, indented subclasses 184+
being directed to plural field windings and indented
subclasses 198+ to plural armature or primary windings.
313, Electric Lamp and Discharge Devices, particularly
subclass 62, and 153+, 413, 421+, 442 for coil structures
which may involve plural windings, combined with electric
lamps and space discharge devices.
315, Electric Lamp and Discharge Devices: Systems,
appropriate subclasses for lamp and space discharge device
systems utilizing inductors which may have plural windings,
particularly 4, 27, 39, 40, 41+, 50, 54, 70, 141+, 177, 206,
212+, 219+, 239, 254+, 262, 266, 274, 276+, 354, 368.28, and
382.
318, Electricity: Motive Power Systems, appropriate
subclasses for electric motors and control systems therefor
including plural windings inductors.
322, Electricity: Single Generator Systems, appropriate
subclasses for single electrical generators and control
systems therefor including plural winding inductors.
323, Electricity: Power Supply or Regulation Systems,
subclass 206, 214, 215+, 232, 247+, 301+, and 328+ for
systems employing transformers or other plural winding
inductors.
324, Electricity: Measuring and Testing, subclass 55 for
transformer testing systems, subclass 59 for inductance
measuring systems and subclass 127 for measuring systems with
coupling transformers.
333, Wave Transmission Lines and Networks, particularly 100
and 24+ for electric wave coupling systems including plural
winding inductors, note especially subclasses 177+ for
transformer coupled wave filters.
334, Tuners, appropriate subclasses for tuners which may
employ inductors with plural windings.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 289 for structure of electromagnets of
the holding, lifting or tractive type.
340, Communications: Electrical, especially 870.31 for
plural winding inductors employed in telemetering systems.
343, Communications: Radio Wave Antennas, subclass 855 for
plural loop type antennas with a coupling network; and
subclass 867 for plural loop type antennas including plural
or tapped coils.
361, Electricity: Electrical Systems and Devices, 35 for
transformer protection circuits, subclasses 139+ for electric
circuits for relays or electromagnets which may be of the
plural winding type.
363, Electric Power Conversion Systems, appropriate
subclasses for current, frequency, or phase conversion
systems utilizing plural winding inductors, particularly
subclass 5, 64, 152+, and 170+ for systems with
transformers.
379, Telephonic Communications, particularly subclass 443
for induction coils combined with telephones, subclass 55.1
for separate windings inductively coupled through appreciable
space to transmit and receive telephone signals, and
appropriate subclasses for induction coils restricted to use
in telephone systems.
Subclass:
221
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising the combination of coil and core
in general and which is not provided for in any of the
preceding subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for the combination of coil and core where the coil
and/or core are distortable to effect an inductance change.
30 for an inductor comprising coil and core means wherein
the inductance thereof is changed by physically displacing
parts of the inductor relative to each other in response to
some condi
60 for inductor structure with ventilating passages
therethrough (e.g., by coil section or core part spacers).
61 for inductor structure with heat exchanging surfaces
associated with the coil and/or core thereof.
77 for relatively movable coil and closed coil or conductor
member wherein a portion of the closed coil or conductor
member is formed of magnetic material.
83 for inductor structure wherein the core forms a casing
for the coil (e.g., iron clad coil).
98 for incased inductor structure with exposed core
portions.
100 for inductor structures with means to prevent vibration
or shattering of core parts caused by varying currents in the
coil conductor.
110 for inductor structure including a permanent magnet.
117 for inductor structure involving relatively movable
coils and associated core.
130 for inductor structures comprising relatively movable
coil and core.
155 for inductive regulator structure of the saturable core
or high leakage reactance type.
172 for coil and core wherein at least one coil turn is
shorter than the other turns and links only part of the core
cross section.
175 for inductor structure comprising a linear conductor
surrounded by a core.
177 for inductor structure having a coil conductor of
magnetic material.
178 for coil with a substantially closed core having an air
gap.
184 for winding formed of plural coils disposed on different
core legs.
196 for inductor structure with supporting and spacing means
between coil and core.
210 for coil with core having core clamps, wedges of
fasteners.
211 for coil with concentric core elements.
212 for coil with plural part core.
213 for coil with wound core.
214 for coil with core having multiple magnetic paths.
216 for coil with core having novel joint structure.
218 for coil with core of directionally prestressed material
(i.e., grain oriented).
219 for coil with core having insulation between core
parts.
SEE OR SEARCH CLASS:
29, Metal Working, 602.1 for the process of manufacture,
assembly and disassembly of electromagnets and inductors in
general particularly subclass 606 for assembling coil and
core. See, also, the comprehensive search notes appended to
subclasses 602.1+ of Class 29 as to other classes providing
for inductors and inductor manufacture.
178, Telegraphy, subclass 46 for the coil and core
combinations designed to electrically load electrically long
telegraph lines and subclass 64 for telegraph systems
utilizing coil transformers.
219, Electric Heating, 50, especially indented subclass 116,
for metal heating systems utilizing transformers; subclasses
600+ for inductive heating, note subclasses 672+ for a
specific heating inductor configuration; subclasses 678+ for
microwave heating; and subclasses 764+ for capacitive
dielectric heating, note subclass 780 for a specific heating
electrode configuration.
307, Electrical Transmission or Interconnection Systems,
appropriate subclasses, for miscellaneous electrical systems
utilizing transformers or other inductor devices.
310, Electrical Generator or Motor Structure, 10 for
dynamoelectric machine structure, especially subclasses 179+
for windings and core structure.
313, Electric Lamp and Discharge Devices, particularly
subclass 62, and 153+, 413, 421+, 442 for coil and core
structures combined with electric lamps or space discharge
devices.
314, Electric Lamp and Discharge Devices: Consumable
Electrodes, particularly subclass 20 for consumable
electrode devices with electromagnetic discharge influencing
means.
315, Electric Lamp and Discharge Devices: Systems,
particularly 4, 27, 39, 40, 41, and 382 for inductor means
associated with lamps and space discharge device in
structural and system relationship.
318, Electricity: Motive Power Systems, appropriate
subclasses for inductor structure utilized in controlling
electric motors.
322, Electricity: Single Generator Systems, particularly 75
and 95+ for impedance systems including inductors, for
controlling single electrical generators.
323, Electricity: Power Supply or Regulation Systems
subclass 206, 214, 215, 247+, 301, 305+, and 328+ for power
supply or regulation systems utilizing inductors classifiable
in class 336.
324, Electricity: Measuring and Testing, particularly 200+,
253+ subclasses for electromagnetic and magnetic testing
systems, subclass 55 for transformer testing, subclasses 57+
(especially indented subclass 59) for measuring inductive
reactance, and subclasses 76.51, 87, 117, 126+, and 144+ for
electrical measuring or testing systems or devices utilizing
inductor means.
332, Modulators, particularly subclass 132, 133, 141+, 172,
173, and 175 for modulators employing inductor means.
333, Wave Transmission Lines and Networks, particularly 24
for coupling networks for transmitting electric wave energy,
especially indented subclasses 148 and 186+ for coupling
systems utilizing electro-mechanical transducers, and
indented subclasses 177+ for transformer coupled filters
(indented subclasses 177+ providing for such transformers
with magnetic core).
334, Tuners, appropriate subclasses for coil and core
structure used in tuner circuits.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 1 for combined diverse switches, and
subclasses 291+ for structure of lifting, holding or tractive
magnets.
340, Communications: Electrical, 870.31 for inductor type
telemetering transmitters, and subclasses 384.1+ for
electromagnetically operated audible signal generators.
343, Communications: Radio Wave Antennas, particularly
subclass 431 and 441 for the structure of goniometers used
in direction finding receivers, subclass 748 for loop type
antennas with variable reactance for tuning; and subclass 788
for loop type antennas including magnetic material.
360, Dynamic Magnetic Information Storage or Retrieval, 110,
for inductive heads used in magnetic recording or
reproducing.
361, Electricity: Electrical Systems and Devices, 1 for
electromagnetic devices with protective means, especially
indented subclasses 38+ for structurally combined
transformers and protective devices; subclasses 117+ for high
voltage dissipators, especially indented subclass 118 for
surge preventing choke coils and indented subclasses 133+ for
such dissipators with magnetic means (e.g., electromagnet);
subclasses 139+ for electric circuits for relays and
electromagnets; subclasses 268+ for subject matter of Class
336 combined with integral switch, capacitor or lock means;
and subclasses 331+ for plural different components such as
inductors and capacitors, or inductors and resistors
structurally related with each other and not classified
elsewhere.
363, Electric Power Conversion Systems, particularly subclass
5, 26, 75, 82, 90, 140, 152+, and 170+ for inductors employed
in current, phase, or frequency conversion systems.
365, Static Information Storage and Retrieval, appropriate
subclass for electromagnetic storage systems, 185.01 for
floating gate memory storage (e.g., flash memory).
367, Communications, Electrical: Acoustic Wave Systems and
Devices, subclass 168 for magnetostrictive acoustic wave
transducers.
373, Industrial Electric Heating Furnaces, 138 for induction
furnaces wherein the furnace charge may be of magnetic
material.
379, Telephonic Communications, 414 for loaded telephone
lines, subclass 443 for telephones combined with induction
coils, and appropriate subclasses for induction coils adapted
for use in telephone systems.
381, Electric Audio Signal Processing Systems and Devices,
150 for audio transducers.
Subclass:
222
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising an inductor winding structure not
provided for in any of the preceding subclasses. For
example, windings having coil conductors made of a particular
composition, other than magnetic material, are in this
subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for polyphase winding structures.
15 for the structure of coils whose conductors may be wound
or unwound to change the coil inductance.
20 for the structure of coils adapted to be distorted to
change the coil inductance.
69 for coil structure having means to modify its capacitance
with respect to a given potential plane.
73 for inductors with closed coil or conductor member.
107 for coil structure combined with quick detachable coil
terminal connector means.
115 for relatively movable coils.
130 for relatively movable coil and core.
137 for coil structures with means to change the effective
coil length or connections.
155 for high leakage reactance type inductors.
170 for inductors with three or more windings.
172 for coils having one or more full turns and including at
least one short turn linking a part of the total coil flux.
173 for interlinked coils.
175 for an inductor comprising a straight conductor
surrounded by a core.
177 for inductors wherein the coil conductor is of magnetic
material.
179 for coils with means to compensate for changes in
inductance with temperature.
180 for windings formed of plural coils.
186 for coil formed of parallel connected conductors.
188 for plural windings with mutually crossed winding
turns.
189 for coils with crossed turns.
192 for windings with terminals, taps or coil conductor and
anchoring means.
196 for coil and core and supporting and spacing means
therebetween.
199 for coil or coil turn supports or spacers.
209 for coils with specific wrapper or binder.
220 for plural windings in general.
221 for the combination of coil and core in general.
225 for coils of special configuration.
SEE OR SEARCH CLASS:
29, Metal Working, 602.1 for processes of manufacture of
electromagnets, transformers and inductances, particularly
subclass 605 for winding or coiling. See the comprehensive
list under "SEARCH CLASS," subclasses 602.1+ of Class 29, as
to other classes providing for coils and coil making.
178, Telegraphy, subclass 46 for the structure of inductors
specifically designed to be inserted at predetermined points
along an electric wave transmitting line (i.e., for loading
the line to change its impedance characteristics).
219, Electric Heating, particularly 663 for the structure of
indicational heating coils.
310, Electrical Generator or Motor Structure, 10 for the
structure of dynamoelectric machines in general, especially
subclasses 179+ for windings or coil structure.
313, Electric Lamp and Discharge Devices, subclass 62 for
cyclotron structures having particular coil means for
influencing the path of charged particles within the device,
subclasses 413, 421+, and 442 for magnetic field producing
coils combined with cathode-ray tube structure, and
subclasses 153+ for lamp or space discharge mean in general
having an inductor coil means structurally associated
therewith.
315, Electric Lamp and Discharge Devices: Systems, 4 for
systems including cathode-ray tubes combined with inductor or
resonator means, subclass 27 for cathode-ray tube systems
wherein coils are used to deflect the cathode ray, subclass
40 for space discharge devices having an inductive electrode,
and subclass 41 for such devices with an inductor connected
between electrodes.
323, Electricity: Power Supply or Regulation Systems,
appropriate subclasses for systems utilizing transformers or
inductors in general particularly subclass 215, 247+, 301+,
305+, and 328+ for transformer systems and 206, 214, 249+,
and 329+ for systems involving inductive reactors.
324, Electricity: Measuring and Testing, appropriate
subclasses for coils used in electrical measuring and testing
systems, especially 256 for coils used in magnetic testing,
and subclass 55 for testing transformers, and subclass 59 for
determining inductive reactance of coils.
333, Wave Transmission Lines and Networks, appropriate
subclasses for wave transmission lines and networks utilizing
inductor coils as elements thereof.
334, Tuners, appropriate subclass for a coil utilized as an
element of a tuned circuit.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 299 for structure of coils for
electromagnetic devices.
338, Electrical Resistors, especially 267 for electrical
resistors having structure analogous to inductors.
343, Communications: Radio Wave Antennas, subclass 726, 728,
748, 764, 788, 842, and 866+ for the structure of inductors
designed for the radiation or reception of radio waves.
373, Industrial Electric Heating Furnaces, 152 and 160 for
electric furnaces including the structure of windings for
inductively heating a furnace charge.
381, Electrical Audio Signal Processing Systems and Devices,
150 for an electro-acoustic transducer involving magnetism.
600, Surgery, 9 for coil structures designed to subject the
human or lower animal body to a magnetic field for
therapeutic purposes.
Subclass:
223
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 222. Subject matter
wherein the coil is formed of a conductor having
cross-sectional dimensions of different values along the
length of the conductor and/or wherein the cross-sectional
configuration of the conductor is other than circular.
SEE OR SEARCH THIS CLASS, SUBCLASS:
61 for coils formed of conductors having heat exchanging
surfaces incorporated therein.
62 for coils formed of conductors which are hollow to permit
the flow of cooling fluid therethrough.
82 for coil structure which forms the casing for the
inductor device.
195 for coils formed of grooved or hollow conductors and
wherein another coil conductor is supported within the
grooved or hollow portion.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, appropriate
subclasses for the structure of electric cables and
conductors, per se, particularly subclass 114 for insulated
multi-conductor cables with split conductors, subclass 115
wherein the conductors are of different size, shape,
insulation or other characteristic, subclass 117 for
conductor assemblies of noncircular section, subclasses
126.1+ for conductor structure, per se, especially subclass
133 for conductor strands of noncircular cross section.
219, Electric Heating, 600 for inductive heating, subclasses
678+ for microwave heating, and subclasses 764+ for
capacitive dielectric heating.
315, Electric Lamp and Discharge Devices: Systems, 4 for
cathode- ray tubes having structurally combined inductive
impedance or resonator means of particular shape, and
subclass 40 for space discharge devices having electrodes of
particular shape formed as an inductive impedance.
332, Modulators, particularly subclass 133 for frequency
modulators utilizing inductive or resonator elements of
particular shape (e.g., Klystron).
333, Wave Transmission Lines and Networks, appropriate
subclasses for wave transmission elements having inductive
elements of particular shape, particularly subclass 13 for
resonator type breakdown discharge systems, subclass 34 for
impedance matching coupling networks utilizing tapered
conductors, and subclasses 219+ for resonators of the
distributed parameter type.
Subclass:
224
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 222. Subject matter
wherein the distance between adjacent turns of the coil
conductor changes along the coil winding.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for coils wherein the distance between adjacent turns is
adjusted by distorting the coil.
70 for coils wherein the spacing between end turns of the
coil may be different than that of the body of the coil (in
combination with other structure) for the purpose of
modifying the surge potential gradient of the coil.
172 for a coil wherein at least one turn is shorter in
length than the rest of the turns.
185 for a winding of plural coils which coils may be
unequally spaced by support or spacer structure.
199 for coil or coil turn supports or spacers in general,
particularly indented subclass 207 for coils with coil turn
spacers.
SEE OR SEARCH CLASS:
333, Wave Transmission Lines and Networks, particularly
subclass 34 for impedance matching networks having a
transmission line element which may be coiled with unequal
spacing between successive turns.
Subclass:
225
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices wherein the coils forming the winding or the
coil, per se, has a distinctive external contour or shape.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for coil structures which are adapted to be deformed to
change the inductance thereof.
60 for coils having ventilating passages therethrough.
61 for coils having their external surface modified by
additional heat exchanging surfaces.
82 for inductors having a coil forming the external casing
of the inductor.
127 for relatively movable spherically shaped coils.
128 for relatively movable coils one of which is tubular.
195 for grooved or hollow coil conductors for supporting
another coil conductor therein.
199 for coil turn supports, particularly subclass 208 for
preformed coil supports or mounts.
SEE OR SEARCH CLASS:
219, Electric Heating, 600 for inductive heating, note
subclasses 672+ for a specific heating inductor configuration
and subclasses 635+ for a heater adapted to heat articles of
specific shape; subclasses 678+ for microwave heating; and
subclasses 764+ for capacitive dielectric heating.
310, Electrical Generator or Motor Structure, especially 179
for dynamoelectric machine windings of particular shape.
313, Electric Lamp and Discharge Devices, subclass 413,
especially subclass 433, for electromagnetic coils of
particular shape for deflecting and electron beam, subclass
442 for beam, and subclasses 153+ for windings of distinctive
shape structurally associated with a space discharge device.
315, Electric Lamp and Discharge Devices: Systems, 4 for
inductor structure of particular shape combined structurally
with a cathode ray tube, and subclass 40 for a space
discharge device having an electrode formed of an inductive
impedance of distinctive shape.
333, Wave Transmission Lines and Networks, particularly
subclass 13, 21, 22, 26, 33+, 109+, 117+, 125+, 156+, 202+,
219+, and 245+ for wave transmission networks having resonant
line sections of distinctive shape.
334, Tuners, subclass 75 for a variable inductor tuner in
which the inductor is wound in a particular shape.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 291 for lifting, holding or tractive
electromagnetic structure and specifically subclass 213 for
electronic and ionic beam deflecting coil structure.
343, Communications: Radio Wave Antennas, 866 for loop type
antennas which may have a special shape.
428, Stock Material or Miscellaneous Articles, 544 for stock
materials, e.g., of indefinite length, which are all metal or
have adjacent metal components, particularly subclasses 557+
for an intermediate metallic article, and 592 for stock which
is helical or has a helical component.
600, Surgery, 13 for magnet coils of specific configuration
adapted to therapeutic uses.
D13, Equipment for Production, Distribution or Transformation
of Electricity, subclass 117 for design patents relating to
coil shapes.
Subclass:
226
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 225. Subject matter
wherein the coil conductor has a "figure 8" shape in a plane
transverse to the coil axis.
Subclass:
227
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 225. Subject matter
wherein the coil conductor has a polygonal shape in a plane
transverse to the coil axis.
Subclass:
228
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 225. Subject matter
wherein the coil conductor has a "D" shape in a plane
transverse to the coil axis.
Subclass:
229
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 225. Subject matter
wherein the coil axis describes a closed curve (e.g., a
circle).
Subclass:
230
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 225. Subject matter
wherein the coil has an external surface similar to that
generated by a circle rotated about a diameter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
127 for relatively movable spherical coils.
Subclass:
231
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 225. Subject matter
wherein the coil has an external surface similar to that
generated by a right triangle rotated about a side.
SEE OR SEARCH CLASS:
333, Wave Transmission Lines and Networks, subclass 34 for
impedance matching networks utilizing tapered or conically
shaped inductive elements.
Subclass:
232
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 225. Subject matter
wherein the coil turns lie substantially in a plane.
SEE OR SEARCH THIS CLASS, SUBCLASS:
191 for basket weave coils of the spider web type.
SEE OR SEARCH CLASS:
242, Winding, Tensioning, or Guiding, 430 for a process or
apparatus for forming an article by winding material onto a
core.
Subclass:
233
![[Patents]](../gifs/ps.gif)
This subclass is indented under the class definition.
Inductor devices comprising the structure of the magnetic
body of the inductor device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for deformable or distortable core structure.
31 for counterbalanced core adjustable in response to a
condition.
77 for relatively movable coil and closed coil or conductor
member having a magnetic portion.
83 for core structure entirely enclosing the inductor
winding.
84 for structure for magnetically shielding the inductor
device.
98 for encased inductors leaving a portion of the core
exposed.
100 for core structures having means to inhibit or damp core
vibrations caused by fluctuations in magnetic flux therein.
110 for core structures which comprise or include a
permanent magnet.
117 for inductors with relatively movable coils having a
core portion.
130 for relatively movable coil and core.
155 for inductors of the high leakage reactance type having
saturable cores or cores with magnetic shunts.
172 for core structures provided with a portion linked by a
partial or shorter length coil turn.
175 for inductor comprising a core surrounding a linear
conductor.
177 for inductor with coil conductor formed of magnetic
material.
178 for closed type core with an air gap.
184 for conductor coils disposed on different core legs.
196 for inductor structures having supporting and/or spacing
means between coil and core.
210 for cores with clamps, wedges or fasteners.
211 for concentric or nested core elements.
212 for plural part cores.
213 for wound cores.
214 for cores with multiple magnetic paths.
216 for cores with specific joint structure.
218 for cores whose magnetic properties are determined at
least in part, by oriented magnetic particles or grain
structure of the core material.
219 for cores having electrical insulation between core
parts (e.g., between laminations).
221 for the combination of coil and core in general.
SEE OR SEARCH CLASS:
29, Metal Working, 602.1 for processes of manufacture,
assembly and disassembly of electromagnets, transformers and
inductances. See particularly subclass 606 for the process
of assembling coil and core, and subclasses 607+ for the
process of manufacture of permanent magnets and cores. Note
under subclasses 602.1+ under "SEARCH CLASS", as to other
fields of search and the line between Class 29 and other
classes.
33, Geometrical Instruments, 355, for magnetic compasses.
106, Compositions: Coating or Plastic, appropriate
subclasses for mixtures of powdered materials such as
magnetic particles, plus a binder material.
148, Metal Treatment, 100 for processes of altering the
internal structure of metalliferous materials to influence
their magnetic properties, particularly subclass 104 relating
to the production of dust cores. Subclasses 300+ for
magnetic stock material made by a subclasses 100+ process or
claimed in terms of significant magnetic properties.
204, Chemistry: Electrical and Wave Energy, 194 for
electrolytic apparatus, in general.
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions, appropriate subclasses
for electrolytic processes, in general.
252, Compositions, 62.51 for the composition of magnetic
materials not classified elsewhere. See the search notes to
this subclass as to the line between Class 252 and Classes
29, 75, 106, 148, 260, and 317.
310, Electrical Generator or Motor Structure, 10 for the
structure of magnetic cores especially adapted for use in
dynamoelectric machines. Subclasses 216+ provides for core
features, while subclasses 254+ and subclasses 261+,
respectively, provide for stator and rotor structure.
324, Electricity: Measuring and Testing, 244 for apparatus
or methods for determining the characteristics of magnetic
fields or the magnetic properties of materials.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, 285 for structure of holding, lifting
magnets and electromagnets. Note particularly subclasses
302+ for permanent magnets in general.
361, Electricity: Electrical Systems and Devices, subclass
267 for process or apparatus for demagnetizing magnetized
bodies.
381, Electrical Audio Signal Processing Systems and Devices,
subclass 177 for structure of a magnet in an acoustic
microphone; subclasses 396+ for the structure of a magnet in
an acoustic reproducer, such as an earphone or loudspeaker.
419, Power Metallurgy Processes, appropriate subclasses for
processes of producing articles, which may be magnetic
bodies, form particulate materials including sintering.
420, Alloys or Metallic Compositions, appropriate subclasses
for alloys which are broadly as "magnetic", "magnetized" or
"permanent magnet" or alloys defined only in terms of their
composition which are inherently magnetic. See the
definition to Class 148 300 for the line between magnetic
alloys classifiable in Class 420 and magnetic stock proper
for Class 148.
428, Stock Material or Miscellaneous Articles, 544 for stock
materials, e.g., of indefinite length, which are all metal or
have adjacent metal components, particularly subclasses 546+
for such stock distinguished by a magnetic feature.
520, Synthetic Resins or Natural Rubbers, particularly
Classes 523 and 524 for a composition containing a resin or
natural rubber and a nonmagnetic metal or alloy.
Subclass:
234
![[Patents]](../gifs/ps.gif)
This subclass is indented under subclass 233. Inductor
devices having a core or magnetic body comprising
superimposed bundles or layers of magnetic material in the
form of sheets, rods, or wires. Single sheets, punchings,
rods or wires which have such configuration that they are of
no utility except in building up a core for use in an
inductor device falling within the class definition are
classified in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
60 for laminated core structures having spaces between
groups of laminations to provide ventilating passages for
cooling the core and/or coil structure.
61 for laminated core structures having heat exchanging
surfaces interleaved between laminations for the purpose of
conducting heat energy away from the core.
84 for core structure including electric or magnetic shields
between laminations.
177 for inductors having a coil conductor of magnetic
material.
210 for laminated core structures wherein clamps, wedges or
other fasteners are utilized to hold the laminations
together.
211 for cores consisting of concentric or nested elements.
212 for plural part core (e.g., an assemblage of preformed
leg and yoke portions).
213 for inductor cores comprising a continuous strip of
magnetic material wound to form a core.
217 for inductor cores of the laminated type wherein the
core joints comprise alternately overlapping laminations.
218 for laminated inductor core structures wherein the
material of the core laminations has been treated to orient
its crystalline grain structure to modify its magnetic
characteristics.
219 for inductor core structures with electrical insulation
between core parts, particularly between core laminations.
SEE OR SEARCH CLASS:
29, Metal Working, 602.1, particularly subclass 605, for
inductor assembly including winding or coiling of core
material, and subclass 609 for the assembly of laminated
cores in general. See the comprehensive search notes listed
under "SEARCH CLASS," of subclasses 602.1+ of Class 29,
relative to other product, manufacturing or process classes
for electromagnets and transformers.
72, Metal Deforming, subclass 66, 135+ and 146+, for a method
of or an apparatus for bending metal into a helical or spiral
coil form.
83, Cutting, appropriate subclasses for processes and
apparatus for cutting or punching blanks for forming
laminated cores, particularly subclass 32 which provides for
cutting interdigitating produces, and subclass 40 which
provides for plural steps of blanking and cutting.
140, Wireworking, appropriate subclasses, for methods and
apparatus for winding and for shaping wire of magnetic
material to form cores.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
appropriate subclasses for processes and apparatus for making
laminated products, e.g., by assembling winding, wrapping,
folding, etc., of filaments, sheets or webs.
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions, especially 76 for the
product and process for making sheets, webs, wires or
filaments electrolytically, and subclasses 138+ and 152 for
electrolytically coating sheets, webs, wires and filaments
constituting an electrically conducting base.
242, Winding, Tensioning, or Guiding, 430 for a process or
apparatus for forming an article by winding material onto a
core.
310, Electrical Generator or Motor Structure, 10, appropriate
indented subclasses, for the structure of laminated cores for
dynamo electric machines.
428, Stock Material or Miscellaneous Articles, appropriate
subclasses, for a metallic or nonmetallic stock material
product in the form of a single or plural layer web or sheet
not elsewhere provided for, and especially 364 for a
structurally defined or coated rod, strand, fiber or
filament, which may be of a magnetic material, and subclass
621 for metallic composite stock comprising plural adjacent
metal layers and an additional nonmetal layer; subclasses
577+ for metal blanks of definite shape; subclasses 548+ for
metal particle containing composite material (i.e., plural
metallic layers); and subclasses 615+ for composite metal
materials in general..
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000