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