This is the Generic Class for: Single electric energy generators
for supplying single load circuits, there being means to regulate
or control the generator output, which means may be electrical or
nonelectrical and may act in the prime mover for the generator,
the power transmission means between the generator prime mover and
the generator, the generator, or the armature (output) circuit of
the generator, or any combination thereof.
SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A. GENERATOR RECITED BY NAME ONLY
Systems as defined in Class Definition, above are included
in this class even though the generator is recited by name only
if the system includes means for the regulation or control of the
generator output. Systems which include a generator recited by
name only, no significant characteristics of the generator or its
control being claimed, are classified with the system, even though
the type of current and/or voltage produced by the generator
is recited (i.e., as a 60 cycle generator), the generator being
considered only a source of energy for the system. For such excluded
systems, see the classes referred to under "Search Class" below.
B. LOAD IN OUTPUT CIRCUIT RECITED BY NAME ONLY OR SIGNIFICANTLY
1. Class 322 provides for single generator supplied single
load systems as defined in the Class Definition above not otherwise
classified even though the electric load in the output circuit is
recited by name only or by its electrical characteristics, the system
defined otherwise being drawn to the control of the generator.
2. Systems having significant characteristics of the circuit
elements in the load circuit other than or in addition to those
for the control or regulation of the generator are classified according
to the type of load circuit or load device claimed even though significant
generator structure or control is also claimed.
3. The following indicates in more detail the classification
lines followed in applying paragraphs 1 and 2 where significant
generator regulation or control is claimed in combination with electric
load or load circuit features.
a. Generator with Transformer or Inductance only in the Load
Circuit:
Where the transformer or inductance is recited by name only,
the system is in Class 322. Where significant characteristics of
the transformer or transformer circuit are claimed, the system is
classified as a transformer system. Merely reciting that the transformer
has primary and secondary windings or that the transformer is an auto
transformer is not a recitation of significant transformer structure
or circuit. A recitation that the transformer is a variable ratio
transformer is a recitation of significant transformer structure.
Likewise systems having a significant structure of an inductance
or inductance circuit are classified according to the type of system
formed by the inductance. A recitation that the inductance is variable
is a recitation of significant inductance structure. For the systems
which provide for systems having transformers and/or inductances
therein, see Class 323 referred to under "SEARCH CLASS" below.
b. Generator with Condenser Only in Load Circuit:
Where the condenser is recited by name only, the system is
classified in Class 322, except in the following cases:
i. where the system is designed for the specific purpose of
charging and discharging the condenser, such a system being classified
in Class 320, Battery or Capacitor Charging or Discharging, subclasses
166+.
ii. where the condenser is provided solely to control the characteristics
of the load circuit (power factor control regulators) such a system
being classified in Class 323 listed under References to Other Classes,
below.
iii. or where the condenser is defined by significant condenser
structure, such a system being classified in Class 323, Electricity:
Power Supply or Regulation Systems, subclass 364.
c. Generator and Resistor Only in Load Circuit:
Where the resistor is recited by name only, the system is classified
in Class 322. Where significant characteristics of the resistor
or resistor system is claimed, the system is classified as a resistor
system. Also merely reciting a variable resistance is not considered
to be a recitation of significant resistor or resistor system.
If in the foregoing systems, structure of the resistor is recited, the
patent will be excluded from Class 322.
d. Generator and Electric Switch Only in the Load Circuit:
Where the switch is recited by name only, the system is classified
in Class 322. Where significant switch structure or switching system
is claimed, the patent is excluded from Class 322. Where an overload
switch when open includes a resistor in the circuit to limit the generator
current flow, the patent is classified in Class 322. Also, a switch
in the load circuit to prevent reverse current flow to the generator
is classified in Class 322.
e. Generator with frequency changing means and/or phase
converting means and/or current converting means and/or
phase control means:
Where the generator supplies a load circuit which includes
any of the following means, a frequency changing means, a phase
converting means, a current converting means, or a phase controlling
means, the patent is excluded from Class 322 whether the means in
the load circuit is claimed broadly or specifically. For such excluded
systems, see the references to Classes 363, Electric Power Conversion
Systems, and 323 Electricity: Power Supply or Regulation Systems,
under "SEARCH CLASS" below.
f. Generator and Testing Means for Generator, Signal or Indicator
for Generator, Recorder for Generator, Measuring Means for Generator:
Where the generator system includes by name only testing means
for the generator, a recorder for the generator or measuring means
(voltage, frequency, current, etc.) for the generator, the system
is classified in Class 322. Class 322 also takes such systems where
the system includes a plurality of such means recited by name only.
If any significant characteristics of the testing means, signal
or indicating means or recorder, or measuring means are recited,
the system is classified with the particular means. For the classes
which provide for such means, see the classes referred to under "Search
Class" below.
g. Battery Charging and Discharging Systems:
This class excludes generator supplied battery charging systems,
battery discharging systems, and the combined charging and discharging
systems for one or more batteries. Such systems are in Class 320,
Electricity: Battery or Capacitor Charging or Discharging. See
the reference to Class 320 under "Search Class" below.
h. Generator and Plural Circuit Elements or Means in the
Load Circuit:
Where the generator load circuit includes a plurality of circuit
elements or means, and one of the circuit elements is a transformer,
a frequency changing means, a phase modification means, or a phase
regulation means, even though recited by name only, such system
is excluded from Class 322. Where the generator load circuit includes
a plurality of circuit elements or means, none of which are these
recited in the foregoing paragraph, and such elements are recited
by name only, and there is no recitation of the manner of connection
of the elements to make any particular type of art system (as an
impedance regulator), then the system is classified in Class 322.
Where the system includes any significant characteristics of any
of the plurality of circuit elements or of their connection with
respect to each other in the load circuit, the system is classified
according to the type system formed by the load circuit elements.
C. POLYPHASE GENERATOR AND LOAD CIRCUIT:
This class includes polyphase generator systems for supplying
a single polyphase load circuit where significant generator structure
or control is recited and if the polyphase load circuit is not excluded
from the class by the limitation of "B. Load In Output
Circuit Recited By Name Only Or Significantly" above.
A polyphase load circuit including a plurality of single phase load
circuits is excluded from Class 322 as being a plural load circuit.
D. PLURAL GENERATORS AND/OR PLURAL LOAD CIRCUITS:
1. Plural Generators:
Systems having a plurality of generators supplying a single
load circuit or having a plurality of generators supplying a plurality
of load circuits are excluded from Class 322. However, Class 322
does include single generator systems having one or more generators
used as the source of excitation for the generator which supplies the
single load circuit. See subclasses 59+. For the excluded
subject matter, see the classes in References to Other Classes,
below.
2. Plural Load Circuits:
Where the patent discloses a generating system and a plurality
of load circuits supplied by a generator, but the plurality of load
circuits are not claimed, the patent is included in Class 322.
Where significant characteristics of the load circuits are claimed,
so that the load circuits do not constitute a single load circuit,
the patent is classified in the classes listed in References to
Other Classes, below.
E. GENERATING SYSTEMS WITH NONMAGNETIC GENERATOR:
This class provides for generating systems as defined in the
Class Definition, above having a nonmagnetic generator which are
not otherwise classified. Nonmagnetic generators include: i. Battery
generators. ii. Thermoelectric generators. iii. Photoelectric
generators. iv. Piezoelectric generators. v. Electrostatic generators.
vi. Friction generators. See References to Other Classes, below
for these other classes and subclasses which provide for generating
systems having a nonmagnetic generator.
F. NONELECTRICAL MEANS CONTROLLING THE GENERATOR:
Systems as defined in the Class Definition, above are included
in this class where the only control means for the generator is
a nonelectrical means (such as a mechanical or hydraulic system)
controlling the operation of the generator prime mover, or the power
transmission between the prime mover and the generator.
Where the prime mover is a nonelectric prime mover, see "G.
Prime Mover Driven Generator Systems--b. Nonelectric Motor Driven
Systems," below. Where the generator control means which
controls only the generator structure (such as the generator magnetic
structure or the brushes) no other generator control being provided, the
subject matter is considered to be only generator structure and
is excluded from Class 322. Where the generator control means includes
electric means and nonelectric means, the subject matter is considered
to be a generator control or regulation system included in Class
322.
G. PRIME MOVER DRIVEN GENERATOR SYSTEMS:
a. Electric Motor Driven Generator Systems:
This class provides for systems as defined in the Class Definition,
above wherein the prime mover for the electric generator is an electric
motor where significant generator structure or circuit is claimed,
except where there is a significant relationship between the characteristics of
the input circuit for the motor with relation to the output circuit
of the generator so that the generator and its motor prime mover
constitutes a translating device in a system for converting electric
energy having particular characteristics to electric energy having
other characteristics. Such excluded systems are classified in
Class 363, Electric Power Conversion Systems. Included in Class
322, in subclasses 10+ are motor generator systems where
the generator is used as a motor to start the motor, the motor after
the starting period is over, serving as a prime mover for the generator.
Motor generator systems where the generator is recited by name
only and is only a nominal load for the motor are excluded from Class
322 and are classified in Class 318, Electricity: Motive Power Systems
as a motor system. See the reference to Classes 321, 318 and 333
under "Search Class" below.
b. Nonelectric Motor Driven Generator Systems: Electric generating
systems having the generator driven by a nonelectric prime mover
and where either significant characteristics of the prime mover
or significant prime mover control features are set forth are excluded
from Class 322, and are classified in Class 290, Prime-Mover Dynamo
Plants.
GENERATOR STRUCTURE, PER SE:
This class provides for electrical system as distinguished
from the structure of the devices capable of translating nonelectric
to electric energy. See "F. Nonelectrical Means Controlling
The Generator," above. For the classes which provide for
generator structure, per se, see the classes referred to in References
to Other Classes, below.
SYSTEMS GENERIC TO MOTORS OR GENERATORS:
Where the system includes a dynamo-electric machine, and the
machine is disclosed but not claimed as either an electric motor
or and electric generator, the patent is classified in Class 322,
if the claimed system is otherwise within the definition of Class
322, and provided that no structure or circuit is claimed that limits
the system to being a motor system (in case the machine is disclosed
as being a motor. Where the machine is claimed as being either a
motor or generator, the patent is classified in Class 322). However,
see Class 505, Superconductor Technology: Apparatus, Material,
Process, subclasses 150+ for high temperature (Tc
30 K) superconducting devices, and particularly subclasses 166+ for motors
or generators containing high temperature superconductors.
GENERATOR SYSTEMS COMBINED WITH OTHER SYSTEMS:
Where a generating system is part of an art system or other
system, it is classified with such art device or other system.
For a partial list of the classes that provide for such art systems
or other systems, see the classes listed under References To Other
Classes below.
Fishing, Trapping, and Vermin Destroying,
subclasses 16 and 17, for generator supplied signaling devices,
subclass 42.07, for generator supplied illuminated bait, subclasses
98+, for generator supplied electrocuting trap, subclass 112,
for generator supplied electrocuting devices for insects, and subclass
113, for generator supplied illuminated traps for insects, and subclass
27, for generator supplied devices to illuminate artificial and
live bait.
Measuring and Testing, and appropriate subclasses, for generator systems used
in measuring and testing apparatus. See note 3, C, Electrical,
to the class definition of Class 73, for the line between Classes
73 and 322. In Class 73, see
subclasses 862+ , for dynamometer systems for measuring torque,
moments work or power by measuring the force exerted or power exerted
by a prime mover for a dynamoelectric generating machine, see indented
subclass 862.191 for such systems where the power is measured during
transmission.
Music,
subclasses 600+ , for electric musical instruments utilizing an
electric generator for electrical tone generation. See subclasses 1.04+,
where the generator includes a tuned sound wave generator or resonator
(such as tuned reed or string) subclass 1.18 where the instrument
includes an electro-optical type (photo-cell) generator, subclasses
1.19+, for the instruments with generators (usually dynamoelectric
generators) and means for the selective control of the tone partials,
and subclass 1.28 for the instruments with pattern or sound record
type generators.
Railway Rolling Stock,
subclasses 35+ , for locomotives in which a prime mover runs an electric
generator for generating electricity which supplies current for
electric motors to drive the locomotive, and subclasses 49+,
for generator supplied electric locomotives, see indented subclasses
50+, for electric locomotives which carry primary or storage
batteries for the supply of electricity to the motors or other car
devices.
Internal-Combustion Engines,
subclasses 143+ , for generator supplied ignition systems for internal
combustion engines; see subclass 148, for the high tension ignition
systems including those having a dynamoelectric generator; and subclass
149, for ignition systems having a dynamoelectric generator operated
by an engine, the dynamo supplying the ignition current, and for
combined dynamo-electric generator and ignitors and for dynamoelectric generators
which are especially designed for use with internal combustion engines
for supplying the ignition current.
Batteries: Thermoelectric and Photoelectric,
subclass 89 , for structure of photoelectric generators, and
see "E. Generating Systems With Nonmagnetic Generator:" above
for a reference to battery generators, per se. ("Photoelectric
Generators")
Chemistry: Electrical and Wave Energy, is the generic class for chemical apparatus and
systems involving electric and wave energy and including arrangements
wherein the source of electric energy is a generator.
Automatic Temperature and Humidity Regulation, appropriate
subclass 69 for thermocouples used in temperature regulating
systems. ("Thermoelectric generators")
Railway Switches and Signals, for generator supplied electric railway switch and signal
systems; see
subclass 245 , for car actuated generators, that is, devices
by which the energy of the moving vehicle is converted into electrical energy
for actuating switches and/or signals.
Radiant Energy,
subclasses 200+ , for miscellaneous photo cell controlled electric
circuits and photocell apparatus, particularly subclass 212 where
the photocell is a self-generating type cell (e.g., battery) which
supplies electric current to the circuit. ("Photoelectric
Generators")
Electrical Transmission or Interconnection Systems,
subclasses 11+ for systems wherein one or more generators are
interconnected with two or more load circuits, and subclasses 43+ for
systems wherein two or more generators supply an electrical system.
Electric Lamp and Discharge Devices: Systems,
subclass 55 for electric lamps and electrical space discharge
devices (radio tubes) which have a piezoelectric device structurally
combined therewith so as to form a unitary device. ( "Piezoelectric
Generators")
Electric Lamp and Discharge Devices: Systems, and the classes and subclasses specified in the notes to
the definition of that class, for generator supplied electric lamps
and electric space discharge devices. See
subclass 33 , for the portable self-contained systems in class 315;
subclass 55 for lamps and electric space discharge devices having
an electric current generator combined therewith to form a self-contained
unit; subclass 78, for class 315 systems having the electric current
generator driven by a vehicle motor or driven in response to the
motion of a vehicle; and subclass 302, for regulating systems within
class 315, where the system includes means to control the current
generator.
Electricity: Motive Power Systems, for generator supplied motor systems. See section
J of the class definition above for motor driven generator systems.
See section III of the class definition of Class 322 for the line
between Classes 318 and 322 with respect to systems having a dynamoelectric
machine where the machine is disclosed as a motor, but is not claimed
as a motor and where the claimed system is generic to either a motor
or generator.
Electricity: Battery or Capacitor Charging or Discharging, appropriate subclass for a generator-supplied battery charging
system (See section I, D, 3, g, and I, G, of this class definition for
the line between Classes 320 and 322 with respect to a generator-supplied
battery load); and
subclasses 166+ for a generator-supplied capacitor charging circuit
(See "Load In Output Circuit Recited By Name Only Or Significantly:--Generator
with Condenser Only in Load Circuit" above for the line
between Classes 320 and 322 with respect to a generator supplying
a load capacitor.)
Electricity: Battery or Capacitor Charging or Discharging, appropriate subclass for a battery charging either
another battery or a capacitor, or for a generator-supplied battery
charging system. ( "Battery charging or discharging")
Electricity: Measuring and Testing, appropriate subclasses, for testing apparatus having electric
generators for supplying the electric current for the testing, electric
systems for testing the characteristics of electric generators (see "Load
In Output Circuit Recited By Name Only Or Significantly:--Generator
Testing Means for Generator, Signal, etc." above for a statement
of the general line between Classes 324 and 322 for generator systems
provided with a testing means), and testing apparatus using electric
generator systems for indicating some characteristic of the device
being tested (such as speed).
Oscillators,
subclass 73 for crystal oscillators of the electron-coupled
type, subclass 139 for crystal oscillators of the bridge type, subclass 155
for oscillators wherein a piezoelectric crystal drives or is driven
by the electro-mechanical frequency determining resonator of the
oscillator and subclass 158 for crystal oscillators in general.
( "Piezoelectric Generators")
Oscillators,
subclass 71 for oscillation generating systems wherein a generator
of raw A.C. may be employed as source of power or bias for the oscillator,
and subclasses 185+ for oscillation generating systems
having a particular source of power or bias voltage, which source
may be a generator of the type classified in Class 322.
Wave Transmission Lines and Networks,
subclasses 148+ for delay networks of the electro- mechanical transducer
type, which may include a piezoelectric device, and wherein the mechanical
coupling between the motor and the generator determines the delay
characteristics of the network, and subclasses 187+ for wave
filters of the piezoelectric type. ("Piezoelectric Generators")
Wave Transmission Lines and Networks,
subclasses 148+ for delay networks of the electromechanical type,
subclasses 167+ for wave filter networks, particularly
subclasses 186+ for wave filters of the electromechanical
type, wherein the mechanical coupling between the motor and the
generator determines the propagation characteristic of the filter.
Communications: Electrical, appropriate subclasses, for generator systems having
an electric signal or indicator; see "Load In Output Circuit
Recited By Name Only Or Significantly:--Generator Testing Means
for Generator, Signal, etc." above for the general line between
Class 322 and Class 340 with respect to such systems. See "Generating
Systems With Nonmagentic Generator" of the class definition
of Class 322 for a reference to the nonelectromagnetic induction
generators in Class 340.
Electricity: Electrical Systems and Devices,
subclasses 139+ for relay systems, subclasses 236+ for
speed-controlled systems which include an electric current generator
system, and subclasses 247+ for igniting systems having
electric generators for supplying the igniting device.
Illumination,
subclass 193 for bicycle driven generators for supplying a lamp;
subclasses 157+ for miscellaneous portable self-contained electric
lamps (flashlights).
Electric Power Conversion Systems, appropriate subclasses for conversion systems which may
be supplied by a generator.
subclasses 102+ for dynamoelectric machine current converter systems
wherein the converter might be a motor-generator set or an analogous
machine; subclass 150 for dynamoelectric phase converter systems;
subclasses 174+ for dynamoelectric machine frequency converter
systems, particularly subclass 175 wherein the converter comprises
a motor-generator set.
Dynamic Information Storage or Retrieval,
subclass 144 for a piezoelectric phonograph pickup; and subclasses
146+ for an electromagnetic phonograph pickup.
Industrial Electric Heating Furnaces, and appropriate subclasses, for electric generator supplied
furnaces, note especially
subclasses 102+ , for arc furnace control systems, and subclasses
135+, for resistance furnace control systems.
Induced Nuclear Reactions: Processes, Systems,
and Elements, appropriate subclasses for nuclear reactors, per
se, which may be combined with electric generator systems of this class
(322). For the line between Class 376 and the energy generating
classes see the class definition of Class 376 under II (1) and (2a).
Telephonic Communications, appropriate subclasses for a telephone device or system
with power source detail,
subclass 371 for magneto signalling in a telephone system.
Electrical Audio Signal Processing Systems and
Devices,
subclass 173 for piezoelectric microphones and subclass 190
for a piezoelectric speaker. ( "Piezoelectric Generators")
Telecommunications,
subclass 95 for generator supplied portable radio transmitters
and receivers; and see subclass 351 for portable self-contained
receivers.
Superconductor Technology: Apparatus, Material,
Process,
subclasses 150+ for high temperature (Tc
30 K) superconducting devices, and particularly subclasses 166+ for motors
or generators containing high temperature superconductors.
Surgery: Light, Thermal, and Electrical Application, appropriate subclasses, especially
subclass 1 , electric generator supplied surgical apparatus,
also for chairs and seats combined with an electric generator (rocking
of the chair used to operate dynamoelectric generator), subclass
149 for devices to be worn on the person, as belts, bands, etc.,
which include an electric generator (usually a battery), and subclasses
115+ for portable self contained medical apparatus for
applying electric energy to the body and including an electric generator.
SECTION IV - GLOSSARY
ELECTRIC ENERGY GENERATORS
As used herein are devices and apparatus for converting any
character of nonelectric energy to electric energy.
ELECTRIC GENERATING
As used herein involves the conversion of any character of
nonelectric energy to electric energy.
LOAD CIRCUIT
Includes the system into which the electric energy from the
electric generator is supplied, and may include a load device recited
broadly or by name only (such as a welding load) in some cases.
See Lines With Other Classes and Within This Class, above.
This subclass is indented under the class definition. Subject matter wherein the system is modified to produce
an arrangement which is peculiarly adapted to be mounted on a movable device.
(1)
Note. The mere fact that a generating system is made so light
and small that it may be readily carried does not put the system
in this subclass. Some modification of the system to the movable
device is necessary.
Card, Picture, or Sign Exhibiting, appropriate subclasses, for portable generator supplied
self-contained signs, see
subclasses 541+ , for illuminated signs.
Railway Rolling Stock,
subclasses 35+ and 49+, for generator supplied locomotives.
See subclass 35, for such locomotives in which a prime mover runs
an electric generator which supplies current to the electric motors
for driving the generator.
Electric Lamp and Discharging Devices: Systems,
subclass 33 for miscellaneous portable self-contained generator
supplied lamp and electric space discharging devices lamps and electric
space discharging devices which have an electric generator structurally
combined therewith so as to form a unitary device.
Illumination, appropriate subclasses for articles, such as firearms,
canes, etc., which include an electric lamp and the source of potential
therefor to make a portable self-contained illuminated article;
subclass 193 for bicycle driven generators for supplying a lamp;
and subclasses 157+ for portable self-contained electric
lamp, such as flashlights.
Surgery: Light, Thermal and Electrical Application,
subclass 149 for electrosurgical devices to be worn on the person,
as belts, bands, etc., which include an electric generator (usually a
battery) and subclasses 115+ for portable self-contained
medical apparatus for applying electric energy to the body and including
an electric generator.
This subclass is indented under the class definition. Subject matter wherein the generation of electric energy
does not involve electromagnetic induction.
(1)
Note. See the class definition, Lines With Other Classes, "Generating
Systems With nonmagnetic Generator" for a statement as
to the type of systems included in this subclass.
This subclass is indented under the class definition. Subject matter wherein the generator has a moving generating
means which may be either the armature or field structure which
has a reciprocating motion.
(1)
Note. The motion may be either rectilinear or curvilinear.
This subclass is indented under the class definition. Subject matter wherein the generator is provided with a
flywheel or depends on the use of a massive moving element to give
the moving element a high inertia characteristic.
(1)
Note. The usual purpose of the arrangements of this subclass
is to minimize minor deviations of the speed of the moving element
from its average value.
Electricity: Motive Power Systems,
subclass 150 for generator fed motor systems with flywheel on
generator or motor and subclass 161 for motors having flywheels
or other massive rotary members.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass especially
subclass 165 and Dig. 15 for polarity monitoring or control
in a battery or capacitor charging or discharging system.
This subclass is indented under subclass 5. Subject matter wherein the generator polarity is controlled
by controlling the generator excitation.
(1)
Note. Such excitation control may take the form of: a. Reversal
of field current. b. Changing the relative strengths of opposed
field windings. c. Alternate energization of opposed field windings.
COMBINED CONTROL OF GENERATING MEANS AND LOAD CIRCUIT:
This subclass is indented under the class definition. Subject matter wherein both the generator and the load circuit
(armature circuit) are controlled.
(1)
Note. For a statement of the generator and load circuit control
systems included and excluded from this class, see the class definition,
especially Lines With Other Classes, "Load in Output Circuit Recited
by Name Only etc."
for systems within the class definition where the
generator is provided with a plurality of diverse generator control means
(i.e., control for the armature and fields).
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for voltage regulation or circuit
making or breaking in a battery or capacitor charging or discharging
system.
This subclass is indented under the class definition. Subject matter wherein the generator is driven by two or
more driving means.
(1)
Note. Where one of the driving means is a nonelectric prime
mover and the characteristics of the prime mover are significant
or the prime mover control is set forth, the subject matter is to
be found in Class 290, regardless of the characteristics or operation
of the other driving means. See Lines With Other Classes, "Prime
Mover Driven Generator Systems" of the class definition
for a statement of the general line with Class 290.
(2)
Note. See Lines With Other Classes, "Nonelectrical
Means Controlling the Generator" of the class definition
for a reference to the nonelectric generator control systems for
electric generators and/or the generator driving means included
in this class.
WITH PHYSICAL STARTING AND/OR STOPPING OF THE
GENERATOR:
This subclass is indented under the class definition. Subject matter wherein means are provided for starting and/or
stopping the generator. This involves the physical starting and putting
the machine into service or taking it out of service and stopping
it.
Clutches and Power-Stop Control, appropriate subclasses, for clutches,
subclasses 3.21+ , for a combination of vortex-flow drive and clutch,
subclasses 3.5+, for miscellaneous mechanism for the joint
control of a transmission mechanism and a clutch, subclasses 226
for the joint control of transmission connection and braking mechanism,
subclasses 12+, for mechanism for applying a clutch and brake
alternately to drive and retard or stop a mechanism, subclasses
116.5+, for miscellaneous mechanism, usually automatic,
for stopping a machine.
Prime-Mover Dynamo Plants,
subclasses 34+ and subclasses 40+, for nonelectric prime
mover driven generator plants having means for physically starting
and/or stopping the generator.
Electrical Transmission or Interconnection Systems,
subclasses 85+ for interconnection systems having means for connecting
or disconnecting a plurality of electrical generators.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system that employs a generator.
This subclass is indented under subclass 10. Subject matter wherein the starting or stopping of the generator
is initiated automatically in response to predetermined conditions.
Sensing means is provided which is responsive to the condition
or conditions and initiates the activity of either starting or stopping.
Prime-Mover Dynamo Plants,
subclasses 40+ , for nonelectric prime mover driven generator plants
having automatic means for physical starting and/or stopping
of the generator.
Electrical Generator or Motor Structure,
subclasses 86+ for systems wherein a generator is started and connected
in circuit with other generators in response to a condition, such as
load demand.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system that employs a generator.
This subclass is indented under subclass 10. Subject matter wherein a clutching means between the generator
and driving means is provided for connecting or completely disconnecting
the drive connection.
which relates to arrangements for controlling a
generator by controlling the power transmitting mechanism including
slip clutches (e.g., magnetic) which do not completely disconnect.
Clutches and Power-Stop Control,
subclasses .03 through .098for mechanism for joint control of a nonelectric
motor and clutch, subclass .02 where the motor is electric, and
subclasses 30+ for mechanical clutches.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system that employs a generator.
This subclass is indented under the class definition. Subject matter wherein the system is provided with controls
for both the generator and the driving means.
(1)
Note. See the class definition, especially Lines With Other
Classes, "Prime Mover Driven Generator Systems--a. Electric Motor
Driven Generator Systems" for a statement of the motor
generator systems included and excluded from Class 322.
(2)
Note. See Lines With Other Classes, "Nonelectrical
Means Controlling the Generator" of the class definition
for a reference to the nonelectric control means for electric generator
and/or the generator driving means included in this class.
Electricity: Motive Power Systems,
subclasses 140+ , for generator fed motor systems having generator
control wherein the generator control includes generator and driving
means control.
Electricity: Motive Power Systems,
subclasses 140+ , for generator fed motor systems having generator
control wherein the generator control includes simultaneous generator
and driving means control.
This subclass is indented under subclass 15. Subject matter wherein the generator driving means is an
electric motor.
(1)
Note. See the class definition, especially Lines With Other
Classes, "Prime Mover Driven Generator Systems--a. Electric Motor
Driven Generator Systems" for a statement as to the electric
motor driven generator systems included and excluded from Class
322.
for systems under the class definition having means
for the physical starting and/or stopping of the generator where
the driving means for the generator is an electric motor.
Electricity: Motive Power Systems,
subclasses 140+ , for generator fed motor systems wherein the generator control
includes simultaneous generator and electric motor driving means control.
This subclass is indented under the class definition. Subject matter wherein the generator or driving means are
provided with automatic means so that either is controlled in response
to predetermined conditions. Sensing means are provided which are
responsive to the condition or conditions to effectuate the control.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic regulation.
Amplifiers, appropriate subclasses, for amplifier systems, generally, including
those which may be used in the automatic control of generators, particularly
subclass 58 in the amplifier systems of which the active element
is a rotating dynamoelectric machine.
This subclass is indented under subclass 17. Subject matter wherein the automatic response means includes
a time delay means to delay the response.
(1)
Note. The purpose of such arrangement is to prevent unnecessary
operation of the control device in response to temporary short time
deviations from the controlled condition.
Electricity: Motive Power Systems,
subclasses 142+ , for generator fed motor systems with control of
the generator responsive to predetermined conditions with time delay
in the response.
Electricity: Battery or Capacitor Charging or
Discharging, especially
subclasses 155+ for a battery or capacitor charging or discharging
system with time control.
This subclass is indented under subclass 17. Subject matter wherein the automatic control means include
(1) means responsive to the rate of change of a condition are provided
for modifying the response of a control device or (2) means are
provided for minimizing or eliminating the tendency of a control
device to hunt.
(1)
Note. In most cases anti-hunt devices are responsive to rate
of change and most rate of change responsive devices are used for
anti-hunt purposes. However, the two devices may have other applications.
Electricity: Motive Power Systems,
subclasses 141+ for generator fed motor systems having generator
control including antihunt or rate of change, response, and subclasses 611+,
for electric motor position servomechanisms.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic control responsive to a rate of
change of condition.
This subclass is indented under subclass 17. Subject matter wherein the automatic control means include
means responsive to the power factor of the load circuit of the
generator or phase relationships therein.
This subclass is indented under subclass 17. Subject matter wherein the control arrangement includes
line drop compensation means.
(1)
Note. The line drop compensation means usually includes an
electrical equivalent of the load circuit so that the current and
voltage drops may be duplicated therein.
(2)
Note. The control of this subclass permits control of the
generator and/or its driving means to maintain a predetermined
condition at a point in the load circuit removed from the generator.
for systems within the definition of subclass 17
having the automatic control means of other than the line drop compensation
type responsive to current and voltage.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic control responsive to plural conditions.
Electricity: Power Supply or Regulation Systems,
subclasses 234 through 303,for automatic control of impedance systems in response
to plural conditions.
This subclass is indented under subclass 22. Subject matter wherein the plural conditions to which the
automatic control means are responsive include an electrical condition.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic control responsive to plural conditions
which include an electrical condition.
Electricity: Power Supply or Regulation Systems,
subclasses 234 through 303, for automatic impedance control systems responsive
to plural conditions including an electrical condition.
This subclass is indented under subclass 23. Subject matter wherein the plural conditions to which the
automatic control means are responsive are electrical conditions.
Electricity: Motive Power Systems,
subclasses 454+ , for electric motor systems responsive to plural
electrical conditions and subclass 143 for generator fed motor systems
having generator control responsive to plural conditions.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic control responsive to plural conditions.
This subclass is indented under subclass 24. Subject matter wherein the plural electrical conditions
to which the automatic control means are responsive are current
and voltage.
(1)
Note. This subclass includes subject matter where the plural
conditions to which the automatic control means is responsive is
the product of current and voltage (power).
for subject matter under subclass 17 where the automatic
control means is responsive to the product of voltage, current and
the cosine of the included angle.
for subject matter under subclass 17 where the automatic
control means is controlled in response to the generator current
out-put. Where the generator voltage is substantially constant,
this may be considered to be a power response.
Electricity: Motive Power Systems,
subclass 143 for generator fed motor systems having generator
control responsive to voltage and current and subclass 455 for electric
motor systems responsive to voltage and current.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic control responsive to voltage
and current conditions.
This subclass is indented under subclass 17. Subject matter wherein the automatic control means is responsive
to light or utilizes a photo-sensitive circuit.
Radiant Energy,
subclasses 200+ , and the classes and subclasses specified in the
Notes to the definition of these subclasses for photocell controlled circuits
and photocell apparatus.
Electricity: Power Supply or Regulation Systems,
subclasses 221 through 902,for light responsive electric space discharge device
voltage magnitude control systems.
This subclass is indented under subclass 17. Subject matter wherein the automatic control means is responsive
to generator current output.
(1)
Note. Where the generator voltage is substantially constant
this may be considered to be a power response. For actual power
output response (e.g., voltage and current product or the product
of voltage, current and cosine of included angle), search this class,
subclasses 20 and 25.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic control responsive to a current
condition.
This subclass is indented under subclass 17. Subject matter wherein the automatic control means is controlled
in response to the generator output voltage or the voltage of the
circuit supplied by the generator.
for generator systems under subclass 17 wherein
the control arrangement includes line drop compensation means (i.e.,
usually an electrical equivalent of the load circuit so that the
current and voltage drops may be duplicated therein) so as to permit control
of the generator system to maintain a predetermined condition at a
point in the load circuit remote from the generator.
and the subclasses specified in the notes to the
definition of that subclass for generator systems under subclass 17
having the automatic control means responsive to current and voltage.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for a battery or capacitor charging
or discharging system with automatic control responsive to a voltage
condition.
This subclass is indented under subclass 17. Subject matter wherein the automatic control of the generator
is in response to the speed or frequency of the generator.
Electrical Transmission or Interconnection Systems,
subclass 87 for systems for the interconnection of plural generators
upon attainment of a predetermined frequency condition.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclass for source regulation in a
battery or capacitor charging or discharging system.
Electricity: Motor Control Systems, art collections 924+ for running-speed control
systems including a feedback device responsive to the speed of the motor.
This subclass is indented under subclass 29. Subject matter wherein the speed or frequency responsive
device includes a centrifugal or fly-weight governor.
Electricity: Motor Control Systems, art collections 924+ for running-speed control
systems including a centrifugal feedback device responsive to the speed
of the motor.
This subclass is indented under subclass 29. Subject matter wherein a tachometer device is utilized to
produce an energy output which is a measure of the speed and such
output is used to provide the control.
(1)
Note. Although the tachometer device is in most cases an
electric generator whose output voltage or frequency is proportional
to the speed, other devices are also used (e.g., pumps etc.).
Electricity: Motor Control Systems,
subclasses 800+ for running-speed control systems including a feedback device
responsive to the speed of the motor.
This subclass is indented under subclass 29. Subject matter wherein a frequency responsive device or
network is utilized to produce a control dependent on the speed
of frequency for controlling the generator or driving means.
(1)
Note. The frequency responsive device or network may take
such diverse forms as a synchronous motor, a frequency meter or
a tuned circuit.
Oscillators,
subclasses 1+ for electrical oscillation generating systems having
a phase or frequency sensing means for automatically stabilizing the
frequency of the generated oscillations.
Electricity: Motor Control Systems,
subclasses 800+ , especially 805, 814 and 820 for running-speed
control systems including frequency responsive feedback devices
or networks.
This subclass is indented under subclass 17. Subject matter wherein the automatic control of the generator
or driving means is in response to temperature or thermal conditions.
Electricity: Motor Control Systems, art collection 934 for running-speed control systems
including a feedback device responsive to a thermal condition.
This subclass is indented under subclass 33. Subject matter wherein the thermal condition or conditions
to which the control is responsive exists in the generator and/or
driving means.
This subclass is indented under subclass 17. Subject matter wherein the generator or driving means is
automatically controlled in response to fluid pressure.
(1)
Note. The fluid pressure may be wind pressure.
(2)
Note. Where fluid pressure is varied in response to some
other condition, the other condition should be searched. For example,
a generator system controlled by means of a voltage responsive hydraulic
arrangement should be searched in subclass 28.
Electricity: Motor Control Systems, art collections 929+ for running-speed or
acceleration control systems including a feedback device responsive
to fluid pressure.
This subclass is indented under subclass 17. Subject matter wherein the automatic control arrangement
includes means for setting up a reference standard with means for
comparing the condition to be controlled with the reference standard.
The control system is usually responsive to the difference between
the reference standard and the condition.
(1)
Note. The particular condition set up by the standard is
not material in this subclass. If the particular condition (e.g., voltage,
frequency, etc.) is significant, the preceding subclasses under
subclass 17 relating to the particular condition should be searched.
for systems under subclass 17 having the automatic
control means controlled in accordance with electrical conditions
in a circuit other than the circuit in which the generator is connected.
Electricity: Motive Power Systems,
subclasses 449+ , for electric motor control having automatic control
with respect to a standard, master or reference device.
This subclass is indented under subclass 17. Subject matter wherein the generator or driving means is
controlled in accordance with electrical conditions in a circuit
other than that in which the generator is connected.
(1)
Note. In most cases the generator is a control element which
controls some device which is connected to the circuit: (e.g.,
the generator may be an exciter controlled in accordance with the output
voltage of a main generator or the generator may be an amplifier
device for controlling a motor in accordance with its load).
for generator systems under subclass 17 wherein
the automatic control arrangement includes means for setting up
a reference standard with means for comparing the condition to be
controlled with the reference standard.
Electricity: Motive Power Systems,
subclass 530 , for motor field circuit control having plural
sources wherein a generator is one of the sources and is controlled
in accordance with an electrical condition of the motor and 521+ for
exciter generator control of a motor field circuit.
This subclass is indented under the class definition. Subject matter wherein the generator driving means is controlled
to control the system.
(1)
Note. See Lines With Other Classes, "Nonelectrical
Means Controlling the Generator" of the class definition
for a reference to the nonelectrical control means for the generator
driving means included in this class.
for generator systems within the class definition
having means to control the generator driving means for starting and/or
stopping the generator (putting the generator into and/or
out of service).
Electric Lamp and Discharge Devices: Systems, for prime mover driven generator supplied electric lamp
and gas or vapor discharge systems, the system including control means
for the prime mover.
Electric Power Conversion Systems,
subclasses 102+ , 150, and 174+ for dynamoelectric machine
converter systems which may have electric motor driving means control
or its equivalent. For the electric motor driven generator systems
which are considered to be conversion systems, see "Prime
Mover Driven Generator Systems--a. Electric Motor Driven Generator
Systems" of the class definition of this class (322).
This subclass is indented under the class definition. Subject matter wherein a power transmitting mechanism is
interposed between the generator and driving means and the transmitting mechanism
is controlled to control the energy supplied to the generator by
the driving means.
(1)
Note. See Lines With Other Classes, "Nonelectrical
Means Controlling the Generator" of the class definition
for a reference to the nonelectrical means for controlling the power
transmission means for the generator included in this class.
for this subject matter where the system includes
means to control power transmission mechanism for starting and/or
stopping the generator (putting the generator into and/or
out of service), see indented subclass 12 where the system includes
a clutching means between the generator and driving means for connecting
or completely disconnecting the drive connection.
Clutches and Power-Stop Control, appropriate subclasses for clutches and mechanism
involving the joint control of the application of power and brake
or other stopping means.
Clutches and Power-Stop Control,
subclasses .02 through .098,for mechanism for the joint control of a motor
and clutch, subclass 3.5, for mechanism for the joint control of
the power transmission and a brake, subclasses 12+, for
mechanism having a clutch and brake applied alternately to drive
and retard the mechanism, subclasses 30+, for clutches,
see indented subclasses 103+, for speed responsive clutches.
Endless Belt Power Transmission Systems or Components, appropriate subclasses for variable speed belt drive; and
subclasses 101+ for means for adjusting belt tension.
This subclass is indented under the class definition. Subject matter and not classified in one of the preceding
subclasses wherein the generator system is controlled by controlling
the generator.
(1)
Note. See Lines With Other Classes, "Nonelectrical
Means Controlling the Generator" of the class definition
for a reference to the nonelectric control system for generators
included in this class.
for this subject matter where means are provided
for stopping or starting the generator (putting the generator into
service or stopping the generator).
Electric Lamp and Discharge Devices: Systems,
subclasses 302+ , and the subclasses specified in the notes to the
definitions of subclasses for generator supplied lamps and gas or
vapor discharge device systems, the generator being provided with control
means.
This subclass is indented under subclass 44. Subject matter wherein the generator control is effectuated
by a plurality of diverse controls (e.g., combined control by controlling
field structure and field excitation).
Electricity: Motive Power Systems,
subclass 491 , for combined motor circuit and motor structure
controls and subclass 493 for combined armature and field circuit
controls.
This subclass is indented under subclass 44. Subject matter wherein the generator is an induction generator.
(1)
Note. An induction generator is a dynamoelectric machine
having the same structure as an induction motor. It operates as
a generator when connected to a line which can supply a leading
current component for exciting the machine and it is driven at a
greater than synchronous speed. Since it is structurally identical
with an induction motor, Classes 172 and 318 should be searched
for structural features.
This subclass is indented under subclass 44. Subject matter wherein the generator is an acyclic or homopolar
type generator.
(1)
Note. An acyclic or homopolar generator is a generator in
which the voltage generated in the active conductors maintains the
same direction with respect to those conductors. Such machines
are of the commutatorless type.
Induced Nuclear Reactions: Processes, Systems,
and Elements,
subclasses 100+ for plasma generating and control devices, yielding
or intended to yield sustained nuclear (fusion) reactions.
This subclass is indented under subclass 44. Subject matter wherein the generator is controlled by controlling
the structure of parts which form at least a portion of the magnetic circuit
of the generator.
(1)
Note. See Lines With Other Classes, "Nonelectrical
Means Controlling the Generator" of the class definition
for a reference to the nonelectric control means for generator structure
which is excluded from this class.
for systems within the class definition where the
generator has a moving generating means which may be the armature
or the field structure which has a reciprocating motion.
for generator control under subclass 44 where the
generator control means includes means for saturating the generator
magnetic structure by means of a winding which is in noninductive relationship
to the armature or field winding of the generator.
for generator control under subclass 44 where the
generator is controlled by controlling an excitation winding. See
indented subclasses 59+, for generator control by means
of a variable length field winding.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 49. Subject matter wherein the generator magnetic structure
includes a magnetic shunt for the field flux. Such shunt diverts
the field flux away from the armature.
This subclass is indented under subclass 49. Subject matter wherein the generator magnetic structure
control relates to the rotor element or rotating member of the generator.
(1)
Note. While the rotor element usually is the armature in
a direct current machine, it may be either the armature or field structure
of an alternating current machine depending on its design.
This subclass is indented under subclass 49. Subject matter wherein the generator magnetic structure
control relates to the stator element or the portion of the generator
which contains the stationary (nonrotary) parts of the magnetic
circuit.
(1)
Note. While the stator element usually is the field structure
in a direct current machine, it may be either the armature or field
structure of an alternating current machine depending on its design.
This subclass is indented under subclass 44. Subject matter where the generator has one or more pairs
of load brushes and an auxiliary (or third) brush intermediately
positioned between the load brushes with one of the generator windings
(field or armature) or a portion thereof or a circuit connected
between the auxiliary brush and one load brush.
(1)
Note. This subclass includes systems having a third brush
type generator with the field winding or a field winding connected
between the auxiliary (or third) brush and one load brush. Also
included are generator systems having the armature winding or a
portion thereof connected to a short circuit between the auxiliary
(or third brush) and one load brush.
for generator systems within the class definition
where the generator is controlled by short circuiting the armature
winding or a portion thereof, see indented subclass 92 where the
generator is provided with a pair of auxiliary brushes and the short
circuit is between the auxiliary brushes (cross-field generators).
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 44. Subject matter wherein the generator control includes means
to adjust the current collecting mechanism (brushes).
(1)
Note. This subclass includes adjusting the position of the
brush and brush lifting.
Electrical Generator or Motor Structure,
subclass 240 for brush lifters for dynamoelectric machines,
and subclass 241 for circumferential adjustment of the brushes for
a dynamoelectric machine.
Electricity: Motive Power Systems,
subclass 292 , for motor reversing systems by brush shifting
and subclass 541 for motor control by brush or other current collector
or transfer means control.
This subclass is indented under subclass 54. Subject matter wherein the current collecting mechanism
control includes circumferential movement of the mechanism.
Electricity: Motive Power Systems,
subclass 292 for motor reversing by circumferential movement
of brushes, and subclass 541, for motor control by circumferential
movement of brushes.
This subclass is indented under subclass 44. Subject matter wherein the generator control includes means
for saturating at least a portion of the generator magnetic structure
without introducing therein a magneto-motive force which either
aids or opposes the magneto-motive force produced by the armature
or field windings.
(1)
Note. The saturating means is usually a winding which is
in inductive relationship to the magnetic structure to be saturated,
and which is in noninductive relationship to the armature and field windings.
for generator systems within the class definition
where the generator is controlled by controlling the structure of parts
which form at least part of the magnetic circuit of the generator.
This subclass is indented under subclass 44. Subject matter wherein the system includes means for suppressing,
eliminating or minimizing undesired frequencies.
(1)
Note. The suppressing, eliminating or minimizing means may
be in any of the generator circuits (excitation circuit, armature
circuit, etc.).
This subclass is indented under subclass 44. Subject matter wherein the generator is controlled by controlling
an excitation winding or an excitation winding circuit.
for generator systems within the class definition
which are provided with means to control the polarity of the generator
by controlling the excitation of the generator.
for generator control systems under subclass 44
where the generator is an acyclic or homopolar generator with means
to control an excitation winding or an excitation winding circuit.
for generator control systems under subclass 44
where the generator is controlled by controlling the structure of
the parts which form the magnetic circuit of the generator.
for generator control systems under subclass 44
where the generator has an odd number of brushes (3rd brush type)
including such systems where the generator has a field winding connected
between the auxiliary (3rd) brush and one of the load brushes.
for generator control systems under subclass 44
where the generator control includes means for saturating at least
a portion of the generator structure by means of a winding which
is in noninductive relationship to the armature and field winding.
for generator control systems under subclass 44
where the system includes means (such as a filter) for eliminating,
suppressing or minimizing undesired frequencies.
Electricity: Motive Power Systems, and
subclasses 521+ , for motor field circuit control, subclasses 710+ for synchronous
motor field excitation removal; subclasses 712+ for synchronous
motor field excitation application; subclasses 716+ for synchronous
motor field circuits.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 59. Subject matter wherein a substitute or auxiliary source
of voltage is provided to energize the excitation circuit of the
generator during the starting period so that the generator can "build up" its
output voltage means being provided for discontinuing the supply
to the excitation circuit from the substitute or auxiliary source when
the generator has attained a predetermined output voltage.
for generator systems within the class definition
having automatic control means responsive to the generator output
voltage for discontinuing the supply of the voltage to the excitation circuit
when the generator output voltage has attained a predetermined value.
for generator systems under subclass 59 having the
generator excitation circuit supplied from two or more sources of
electric energy, both sources usually being used during the normal
operation of the generator.
This subclass is indented under subclass 59. Subject matter wherein the current supplied to the excitation
circuit is alternating current.
(1)
Note. Where alternating current is rectified and the rectified
current is supplied to the field winding, this patent is not classified
in this subclass but will be found in subclass 79.
Electricity: Motive Power Systems,
subclasses 244+ , for alternating current commutating motors, subclasses 246+,
for alternating current series motors, subclass 700, for synchronous motor
alternating current energized field circuits; subclasses 731+ for induction
motors having a secondary winding energized also by alternating current;
subclass 737 for induction motors having an added primary winding
energized by induction from a secondary motor winding.
Electric Power Conversion Systems,
subclasses 174+ for dynamoelectric frequency converter systems
wherein the converter is excited with alternating current.
This subclass is indented under subclass 59. Subject matter where the generator has a plurality of poles,
the generator or the excitation circuit being designed so that the
generator may be operated as a generator having one number of sets
of poles or as a generator having another and different number of
sets of poles.
(1)
Note. For example, the generator may be provided with eight
poles, the generator or the excitation circuit being arranged so
that the generator may be operated as an eight pole generator or
a four pole generator.
Electricity: Motive Power Systems,
subclass 704 for plural pole type synchronous motors, subclasses
773+ for plural pole type induction motors, and subclass
524 for plural pole type motor systems.
This subclass is indented under subclass 59. Subject matter wherein the generator is provided with more
than one field winding.
(1)
Note. A plurality of windings connected in series or parallel
to produce only one magnetic field is considered to be only a single
field winding. To be classified in this or the indented subclasses,
the generator should have a plurality of windings connected in circuit
to produce a plurality of different magnetic fields. One of the
windings may produce a magnetic field which opposes the field produced
by another winding in indented subclass 64.
for generator systems under subclass 44, where the
generator is provided with a winding for saturating at least a portion
of the generator magnetic structure without introducing a magneto-motive
force which either aids or opposes the magneto-motive force produced
by the field or armature winding.
for generator systems under subclass 59, where the
field windings or excitation circuits are designed so that the generator
may be operated as either a generator having one number of sets of
poles or as a generator having another and different number of sets of
poles (i.e., either an 8-pole or a 4-pole generator).
Electric Lamp and Discharge Devices: Systems,
subclasses 304+ , for electric lamp and gas or vapor discharge device
systems having the supply generator supplied with a plurality of
fields for regulating the system.
Electricity: Motive Power Systems,
subclasses 297+ , for motor reversing systems having plural field
windings, and subclasses 523+, for motor control systems
having plural field windings, subclasses 700+ for synchronous motor
systems having plural field windings, particularly subclasses 716+ for
field circuits of synchronous motors.
Electricity: Motor Control Systems,
subclasses 801+ , 803+ and 826+ for running-speed
control systems for motors with more than one field winding, and
843 and 849+ for acceleration control systems for motors
with more than one field winding.
This subclass is indented under subclass 63. Subject matter wherein the magnetomotive force of at least
one field winding is opposed to the magnetomotive force of at least
one other field winding.
(1)
Note. Where the generator includes a plurality of field windings,
some of which are opposed and others aid, the subject matter is
found in this subclass.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 63. Subject matter wherein the generator is provided with interpole
or commutating pole windings.
(1)
Note. An interpole or commutating pole is an auxiliary pole
member placed between the main pole pieces of a commutating machine.
Its exciting winding carries a current proportional to the load current
and produces a magnetomotive force which minimizes or eliminates sparking
at the brushes.
This subclass is indented under subclass 63. Subject matter wherein the plural field windings include
compensating windings.
(1)
Note. Compensating windings are windings placed in slots
in the pole faces of the generator pole pieces which produce a magnetomotive
force equal and opposite to that produced by the armature and so
prevent field distortion.
for generator control where only a portion of the
field winding is short circuited so that the generator is controlled
by varying the length of a field winding.
Electricity: Motive Power Systems,
subclass 528 , for motor control with means to short circuit
a field winding and subclass 299 for motor reversing control with
means for short circuiting one or more field windings.
This subclass is indented under subclass 59. Subject matter wherein the generator excitation is controlled
by interrupting the supply of voltage to a field winding by means
of a circuit maker and breaker.
for generator control under subclass 59 where the
excitation circuit is controlled by means of an electric space discharge
device, vacuum tube gas vapor tube, or arc which may at times interrupt
the supply of voltage to a field winding.
for generator control under subclass 59 where the
excitation circuit is controlled by short circuiting a resistor
in the excitation circuit, thereby varying the flow of current to
a field winding.
Electrical Transmission or Interconnection Systems,
subclass 104 for electrical systems which include therein an
electromagnet or other highly inductive device.
Electricity: Electrical Systems and Devices,
subclasses 52+ for safety and protection systems where the source
of energy is controlled to control an improper operating condition (e.g.,
line fault).
This subclass is indented under subclass 69. Subject matter wherein the generator excitation circuit
is intermittently completed and opened.
(1)
Note. The effective average excitation current is determined
by the frequency of the interruption and the ratio of the time the
circuit is completed to the time the circuit is broken.
Electrical Transmission or Interconnection Systems,
subclasses 96+ for electrical systems which are regulated by an
intermittent regulatory interruption of the system.
Electricity: Motive Power Systems,
subclass 537 for motor control by intermittently or repetitiously
operated field circuit making and/or breaking means.
This subclass is indented under subclass 59. Subject matter wherein the generator excitation is controlled
by varying the length of the field windings.
(1)
Note. The variation in length of the field winding is usually
attained by providing the field winding with taps.
for generator control systems under subclass 44
where the control of the generator is effected by controlling the
structure of the magnetic circuit of the generator.
Electrical Generator or Motor Structure,
subclass 189 for dynamoelectric machine structure having the
field or excitation windings adjustable as to effective length,
as by taps.
Electricity: Motive Power Systems,
subclass 235 for induction motor secondary circuit control having
variable number of effective conductors or turns, and subclass 531,
for motor control by variable length field winding.
This subclass is indented under subclass 59. Subject matter wherein the generator excitation circuit
is controlled by means of one or more electric space discharge devices.
Electric Lamp and Discharge Devices: Systems, appropriate subclasses for systems for controlling
the operation of electric lamps and gas or vapor discharge devices.
Miscellaneous Active Electrical Nonlinear Devices,
Circuits, and Systems,
subclasses 518+ for miscellaneous control circuits utilizing an
electronic space discharge device.
This subclass is indented under subclass 72. Subject matter wherein the space discharge device is provided
with a discharge control device in addition to the load current
carrying electrodes.
(1)
Note. The control device controls the conductivity of the
space discharge device. It may take such forms as an electrostatic
grid, an electromagnetic winding for a magnetic field in which the
discharge is controlled or an igniting device for initiating the
flow of current in a vapor or gas discharge device.
Electric Lamp and Discharge Devices: Systems,
subclasses 349+ and the subclasses specified in the notes to the
definition of those subclasses for systems for controlling the operation
of gas or vapor discharge devices (including lamps) of the discharge
control type.
Electricity: Motive Power Systems,
subclasses 677+ , particularly subclass 682, for position servomechanisms
including space discharge type controls subclasses 700+ for
induction motor control having primary or armature circuit control
by space discharge devices, subclasses 727+ for induction
motor control having secondary circuit by space discharge devices,
subclasses 505+, for motor control by space discharge devices
in armature circuit, and subclass 532 for motor control by space
discharge devices having control elements in field circuit.
Electricity: Power Supply or Regulation Systems,
subclasses 227 and 291, for space discharge regulating systems
wherein the space discharge device is provided with a discharge control
element.
Miscellaneous Active Electrical Nonlinear Devices,
Circuits, and Systems,
subclasses 518+ for miscellaneous control circuits utilizing an
electronic space discharge device.
This subclass is indented under subclass 72. Subject matter wherein the space discharge device or devices
are electric arcs.
(1)
Note. The systems in this subclass are limited to those in
which the discharge is between electrodes exposed to the atmosphere.
Other systems under subclass 72 where the discharge has negative
resistance characteristics (arc) are in subclass 72 or indented
subclass 73 where the discharge device has a control device.
Electric Lamp and Discharge Devices: Consumable
Electrodes, appropriate subclasses for systems, including arc
discharge devices of the consumable electrode type which are provided
with means for controlling current flowing in the arc.
Electric Lamp and Discharge Devices: Systems,
subclasses 326+ and the subclasses specified in the notes to these
subclasses, for miscellaneous systems for controlling the operation
of electric arcs.
This subclass is indented under subclass 59. Subject matter wherein the excitation of the generator is
controlled by means of impedance in the excitation circuit.
for generator field control by means of space discharge
devices. Under some conditions, a space discharge device may be
used as an impedance and subclasses 72+ should be searched
for such systems.
Electricity: Motive Power Systems,
subclasses 249+ , for series motor control by means of motor circuit
impedance, and subclasses 534+ and 533+, for motor
control by field circuit impedance, subclasses 700+ for
synchronous motor control, particularly subclasses 710+ for
field circuit control by means of impedance; subclass 784 for impedance
control of the induction motor primary circuit during starting;
subclass 792 for single phase start winding removal control circuit
which includes a variable temperature coefficient impedance in circuit;
subclasses 794+ for split phase capacitor motor circuits;
subclass 796 for split phase capacitor motor circuits including
a saturable winding in the circuits; subclass 797 for split phase motor
circuits using saturable winding in the circuits; subclass 804 for
induction motor primary circuits responsive to speed or rotation
phase angle with controlled magnetic reactance in circuits; subclasses
814+ for voltage control of induction motor primary circuit
by impedance; subclasses 816+ for split phase induction
motors with voltage control of primary circuit by impedance; subclasses
821+ for induction motor control with impedance in secondary
circuit.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
Electricity: Motor Control Systems,
subclasses 800+ and 825+ for motor speed control systems
and 842+ and 848+ for motor acceleration control systems
including selectable or variable impedance devices.
This subclass is indented under subclass 75. Subject matter wherein the generator excitation circuit
impedance control involves plural impedances.
(1)
Note. This subclass takes arrangements wherein there are
a plurality of different impedances in the field circuit. A sectionalized
impedance is not considered to be a plurality of impedances (e.g.,
a plurality of resistance sections connected in series with means
for controlling the number of sections in the field circuit would
be searched in subclass 80).
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 76. Subject matter wherein the plural impedances form a bridge.
(1)
Note. A bridge is a four terminal closed circuit impedance
network having alternate terminals connected to input and output
terminals respectively.
Electricity: Motive Power Systems,
subclasses 663+ , for position servomechanisms which may include
a bridge in the error detector circuit and subclass 535 for motor
control by means of bridge network impedance control.
Electricity: Measuring and Testing,
subclasses 600+ for impedance measuring bridge networks, and subclasses
98+ and 101 for bridge networks utilized in electric meters.
This subclass is indented under subclass 76. Subject matter wherein the plural impedances in the excitation
circuit make up a tuned or resonant circuit. Such circuit must
include both capacitance and inductance.
Wave Transmission Lines and Networks,
subclasses 175+ for wave filters of the resonant, discrete frequency
selective type, and subclasses 219+ for resonators of the
distributed parameter type.
Tuners, appropriate subclass 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.
This subclass is indented under subclass 75. Subject matter wherein a rectifier or unidirectionally conductive
element is used as an excitation circuit impedance.
(1)
Note. This subclass is not concerned with the use of a rectifier
in the excitation circuit to convert alternating to direct current.
Such an arrangement is found throughout subclasses 59 to 88 depending
on the significant control arrangement of the excitation circuit.
Active Solid-State Devices (e.g., Transistors,
Solid-State Diodes), appropriate subclasses for active solid-state devices
which may be used as rectifying elements.
Electricity: Motive Power Systems,
subclasses 700+ , particularly subclasses 716+, for synchronous
motor field control by resistance; subclass 784 for resistance control
of the induction motor primary circuit during starting; subclass
814 for resistance control of the primary circuit voltage during
running; subclasses 821+ for resistance control of the induction
motor secondary during running; subclasses 238+, for induction
motor secondary circuit control by resistance, and subclasses 533+ for motor
field resistance control.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
Electricity: Motor Control Systems,
subclasses 800+ and 825+ for motor speed control systems
and 842+ and 848+ for motor acceleration control systems
including selectable or variable impedance devices.
This subclass is indented under subclass 80. Subject matter wherein the excitation circuit resistor is
a temperature variable resistor.
(1)
Note. Thermally varied resistances may either be (1) resistors
whose resistance varies inherently with variation in temperature
(e.g., the resistance of copper increases with increase in temperature while
the resistance of carbon decreases with increase in temperature)
or (2) resistors which are varied by means of a temperature responsive
operator.
Electricity: Motive Power Systems,
subclasses 471+ , for thermally responsive motor control systems
and subclass 533 for motor control having thermally varied field
resistance.
Electricity: Battery or Capacitor Charging or
Discharging,
subclasses 150+ for a charging or discharging circuit for a battery
or capacitor that includes thermal condition detection.
for generator systems within the class definition
wherein the generator is automatically controlled in response to
a condition (as a pressure condition), see indented subclass 35
for such automatic control systems where the generator is controlled
in response to fluid pressure.
Electricity: Motive Power Systems,
subclass 481 for electric motor control in response to pressure
in a fluid or granular material and subclass 533 for motor field
circuit control including pressure varied resistor.
Electricity: Battery and Condenser Charging and
Discharging,
subclass 70 , for generation systems for battery charging with
pressure varied impedance field circuit control.
Electrical Resistors,
subclasses 36+ for fluid or gas pressure actuated electrical resistors,
and subclasses 99+ for electrical resistors of the compressible type.
This subclass is indented under subclass 80. Subject matter wherein the generator excitation circuit
is controlled by short circuiting the resistor or a portion thereof.
This subclass is indented under subclass 83. Subject matter wherein the short circuit of the control
resistor is intermittently completed and opened.
(1)
Note. In the systems in this subclass the effective value
of the resistor is determined by the periodicity of the circuit making
and breaking and the ratio of the time the shunting circuit is open
to the time it is closed.
Electricity: Motive Power Systems,
subclass 533 for motor control by means of intermittently short
circuiting and opening a short circuit about a resistance in the
excitation circuit.
This subclass is indented under subclass 83. Subject matter wherein the excitation circuit resistor is
short circuited step by step.
(1)
Note. In some of the systems in this subclass, the resistor
is divided into a plurality of sections and switching means are provided
so that each of the portions may be short circuited in regular order
so that at one extreme of the switching operation all sections are
short circuited and at the other extreme, none of the sections are
short circuited. To be classified in this subclass, the resistor
need not be arranged so that the sections are short circuited in
regular order. The system may be arranged so that the resistor
sections may be short circuited in any order desired.
This subclass is indented under subclass 59. Subject matter wherein the generator excitation circuit
is energized from two or more sources of electric energy and the
excitation current depends on the resultant of the two or more voltages
impressed thereby.
(1)
Note. Usually one of the sources of electric energy is the
generator output to which is added or from which is subtracted the
auxiliary electromotive force. Usually both sources of electric
energy are used in the normal operation of the generator.
for generator systems under subclass 59 having a
substitute or auxiliary source of electric energy to energize the
excitation circuit during the starting period, the supply from the
substitute or auxiliary source being discontinued after the generator
has "built up" to a predetermined voltage.
Electrical Transmissions or Interconnection Systems,
subclasses 43+ for electrical systems in which a single load is
supplied by a plurality of sources or supply circuits for electrical
energy.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 86. Subject matter wherein one of the sources of electric energy
is a dynamoelectric machine other than the load generator.
Electrical Transmission or Interconnection Systems,
subclass 76 for interconnection systems for plural generators
of different voltages, subclasses 78+ for systems of series
connected generators, and subclass 84 for systems including plural
generators.
Electrical Transmission or Interconnection Systems,
subclasses 48+ for systems having plural sources of current in
which one source is a battery floating across the line, and subclasses
66+ for systems having plural alternative sources of current
in which one source is a battery.
This subclass is indented under subclass 44. Subject matter wherein the generator is controlled by controlling
the armature circuit, or the primary circuit of the generator.
(1)
Note. Since the armature circuit or primary circuit of the
generator may be extended to a system of distribution, to a load
circuit or to a load device, see the class definition, especially
section I,D, for the general line between Class 322 and other classes
which have generator supplied load circuits, or systems of distribution
or load devices. This and the indented subclasses include the generator
supplied systems in Class 322 which are not classified in the subclass
above and which have means in the armature circuit for controlling
the generator.
for generator control systems within the class definition
where both the generator and the load circuit are controlled. See
note 1 to the definition of subclass 89.
for generator control under subclass 44 where the
generator control is effectuated by a plurality of diverse controls
one of which may be controlling the armature or primary circuit.
for generator control under subclass 44 where the
generator is controlled by controlling the structure of parts which
form at least a part of the magnetic circuit of the generator, see indented
subclass 51 where the magnetic structure so controlled is the rotating
member of the generator (i.e., either the armature or field), and indented
subclass 52 where the magnetic structure so controlled is the stator
element of the generator (i.e., either the armature or the field).
for generator control under subclass 44 where the
generator is provided with an odd number of brushes (i.e., has an
auxiliary brush), and the generator control means includes an armature
winding or a portion thereof connected to a short circuit between the
odd or auxiliary brush and one of the load brushes.
for generator control systems under subclass 44
where the control includes means for saturating at least a portion of
the generator magnetic structure by means of a winding which is
in noninductive relationship to the armature and field windings.
for generator control systems under subclass 44
where the system includes means (such as a filter) for eliminating,
suppressing, or minimizing undesired frequencies.
Electricity: Motive Power Systems,
subclass 706 for synchronous motor synchronizing systems with
armature winding removal upon failure to synchronize or loss of
synchronism; subclass 709 for synchronous motor synchronizing systems
having different armature winding voltage prior to synchronism;
subclasses 720+ for armature circuits for synchronous motor
systems; subclasses 767+ for primary circuit control of
induction motors; subclasses 287+, for motor reversing
by armature circuit control, and subclass 494, for motor control
by armature circuit control.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 89. Subject matter wherein the armature circuit control comprises
plural armature circuits or windings.
(1)
Note. A plurality of windings connected in series or parallel
so that they constitute only one electrical armature winding is
not classified as plural armature windings. To be classified in
this subclass, the generator must have a plurality of armature windings
connected to form different armature circuits. The plurality of
armature windings may be designed so that they might be connected
in series or parallel to supply a single load circuit or one of
the windings may be for control purposes only.
Electrical Transmission or Interconnection Systems,
subclasses 11+ for plural load circuit systems, and subclasses
43+ for plural supply circuit systems.
Electrical Generator or Motor Structure,
subclasses 140+ for plural commutator generators having plural armature
windings, subclasses 144+ for plural slip ring generators
having plural armature windings, and subclasses 198+ for
plural armature winding structure.
Electricity: Motive Power Systems,
subclass 724 for synchronous motor armature circuits having
a plurality of windings or winding portions; subclass 737 for self-cascaded
induction motor systems having a plurality of primary windings;
subclasses 768+ for three phase winding induction motor
systems operated from a single phase source; subclass 770 for induction
motor primary circuits of the dual voltage type; subclass 771 for
delta-wye, plural wye, or delta-delta connected induction motor
primary circuits; subclass 775 for plural speed single induction
motors having a separate primary winding for each speed; subclass
777 for plural speed induction motors having a separate primary winding
for each speed; subclasses 288+, for motor reversing by
plural armature windings.
This subclass is indented under subclass 89. Subject matter wherein the generator is controlled by short
circuiting the armature winding or a portion thereof.
for the subject matter where the generator is provided
with an odd number of brushes (i.e., has an auxiliary brush) and
the generator control means includes an armature winding or a portion
thereof connected to a short circuit between the odd or auxiliary
brush and one of the load brushes.
for generator control by shunting the armature winding
through an impedance. Subclass 91 differs from subclass 95 in that
in subclass 95 the armature is shunted through a resistance and
in this subclass (91) the shunt connection has negligible impedance.
See subclass 98 where the shunt circuit contains a resistance.
Electricity: Motive Power Systems,
subclasses 379+ , for motor braking systems having armature short
circuiting and subclass 501 for motor armature circuit control by
shunting armature in whole or in part.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 91. Subject matter wherein the generator is provided with a
set of auxiliary brushes spaced 180 electrical degrees apart in
addition to the usual load circuit brushes and the short circuit connection
is between the auxiliary brushes.
(1)
Note. The usual purpose of the above arrangement is to increase
armature reaction flux which produces a field in quadrature to the
flux produced by the field windings. These devices are called "cross-field
generators" in the art. These devices find application
for such uses as constant current welding generators and as dynamoelectric
amplifier devices.
if the generator is provided with an odd or auxiliary
brush, and the armature winding or a portion thereof is connected
to a short circuit between the odd or auxiliary brush and one of the
main brushes.
This subclass is indented under subclass 89. Subject matter wherein the generator armature circuit control
includes a tapped or sectionalized armature.
This subclass is indented under subclass 89. Subject matter wherein the generator armature circuit control
includes armature circuit making and/or breaking.
(1)
Note. The above arrangement is peculiarly applicable for
use in battery charging systems wherein a reverse current cutout
is interposed between the generator and battery. Particular attention
is directed to Class 320 in the search notes below.
Electricity: Battery or Capacitor Charging or
Discharging, appropriate subclasses, particularly
subclass 123 , for a battery or capacitor charging or discharging
system including a generator.
This subclass is indented under subclass 89. Subject matter wherein the generator armature control is
by means of impedance in circuit with the armature.
(1)
Note. See the class definition, especially sections I, D,
for a statement as to other classes which provide for a generator supplied
load circuit where the load circuit is controlled by an impedance.
for generator systems having armature or primary
circuit control where the system includes means to short circuit the
armature winding of the generator.
Electricity: Motive Power Systems,
subclasses 700+ , particularly subclass 720, for synchronous motor
systems impedance control of the armature circuit during starting
or running; subclass 784 for impedance control of the primary circuit
of induction motors during starting; subclass 792 for primary circuit
control of the start winding of single phase motors during starting
by a variable temperature coefficient impedance element; subclasses
794+ for impedance control of split phase capacitor motors;
subclass 796 for saturable winding impedance control of the primary
circuit of split phase capacitor run motors; subclass 797 for phase splitting
of the primary circuit of split phase motors by a saturable winding; subclass
804 for induction motor primary circuit control with a controlled magnetic
reactance; subclasses 814+ for inductor motor primary circuit control
by means of impedance, and subclasses 508+ for motor control
by means of impedances in armature circuit.
Electricity: Motor Control Systems,
subclasses 800+ and 825+ for motor speed control systems
and 842+ and 848+ for motor acceleration control systems
including selectable or variable impedance devices.
This subclass is indented under subclass 95. Subject matter wherein the generator armature control is
by means of a plurality of impedances in circuit with the armature.
(1)
Note. The plurality of impedances must be different impedance
elements. A tapped or sectionalized impedance element is not a
plurality of impedances.
Electricity: Motor Control Systems,
subclasses 800+ and 825+ for motor speed control systems
and 842+ and 848+ for motor acceleration control systems
including selectable or variable impedance devices.
Electricity: Motor Control Systems,
subclasses 800+ and 825+ for motor speed control systems
and 842+ and 848+ for motor acceleration control systems
including selectable or variable impedance devices.
This subclass is indented under subclass 97. Subject matter wherein the resistance is connected across
the generator brushes or in shunt to the generator.
WITH SIGNALS, INDICATORS, RECORDERS, TESTING, ETC.:
This subclass is indented under the class definition. Subject matter wherein the system is provided with signals,
indicators, recorders, or testing means.
(1)
Note. For a statement of the systems in this class which
include a signal, indicator recorder, or testing, and the general line
between Class 322 and the other classes providing for similar subject matter,
see the Class 322 Class Definition, Lines With Other Classes, "Load
in Output Circuit Recited by Name Only or Significantly,-- Generator
and Testing Means for Generator, etc."
Note: The Patent
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