Class   318	ELECTRICITY: MOTIVE POWER SYSTEMS
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1

ELECTRIC MOTOR WITH NONMOTOR DRIVING MEANS (E.G., AXLE DRIVE, MANUAL DRIVE)

2

. (1 indent ) Manual driving means

3

WITH PARTICULAR MOTOR-DRIVEN LOAD DEVICE

4

. (1 indent ) Plural, diverse or diversely controlled load device

5

.. (2 indent ) Plural motor drive

6

. (1 indent ) Tension-maintaining type of motor-control system

7

.. (2 indent ) Plural, diverse or diversely controlled motors

8

. (1 indent ) Plural, diverse or diversely controlled driving motors (e.g., driving differential gearing)

9

. (1 indent ) Power- or motion-transmitting mechanism

10

.. (2 indent ) Reversible drive mechanism

11

.. (2 indent ) Variable speed mechanism

12

... (3 indent ) Gearing

13

.... (4 indent ) Differential type

14

.. (2 indent ) Motion-converting mechanism

15

.. (2 indent ) Mechanical gearing

16

SUPPLIED OR CONTROLLED BY SPACE-TRANSMITTED ELECTROMAGNETIC OR ELECTROSTATIC ENERGY (E.G., BY RADIO)

17

PORTABLE-MOUNTED MOTOR AND/OR PORTABLE-MOUNTED ELECTRICAL SYSTEMS THEREFOR

560

POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS)

561

. (1 indent ) Adaptive or optimizing systems including "bang-bang" servos

562

. (1 indent ) Time-sharing or multiplexing systems

563

. (1 indent ) With protective or reliability increasing features (e.g., "fail-safe" systems)

564

.. (2 indent ) "Redundant" operating channels

565

.. (2 indent ) Monitoring systems

566

.. (2 indent ) Maneuver, force, or load-limiting

567

. (1 indent ) Program- or pattern-controlled systems

568.1

.. (2 indent ) With program recording or composing means

568.11

... (3 indent ) Multifunction manipulator (i.e., Robot)

568.12

.... (4 indent ) Mobile robot

568.13

.... (4 indent ) With particular program teaching method

568.14

....• (5 indent ) Manual lead through

568.15

.... (4 indent ) With particular interpolation means

568.16

.... (4 indent ) With particular sensing device

568.17

.... (4 indent ) With multimode control (e.g., course-fine, position-force, etc.)

568.18

....• (5 indent ) Including velocity control

568.19

.... (4 indent ) With particular coordinate transformation means

568.2

.... (4 indent ) With plural control systems (e.g., the interaction of plural processors to control the plural joints of a single robot):

568.21

....• (5 indent ) Including end effector (e.g., gripping jaw, micromanipulator, etc.)

568.22

.... (4 indent ) With particular compensation (e.g., gain, offset, etc.)

568.23

....• (5 indent ) Including program modification

568.24

.... (4 indent ) With reliability enhancement means (e.g., monitoring, redundant circuits, etc.)

568.25

....• (5 indent ) Including display device

569

.. (2 indent ) Digital or numerical systems

570

... (3 indent ) Contouring systems

571

.... (4 indent ) With "feed-rate" control

572

.... (4 indent ) With "zero-offset" or tool radius correction

573

.... (4 indent ) With interpolating means

574

.... (4 indent ) Multiple axes point to point systems

575

.. (2 indent ) Multiple axes analog systems

576

... (3 indent ) Nonmechanical line, seam or edge followers

577

.... (4 indent ) Optical or photoelectric line followers

578

... (3 indent ) Cam or template followers

579

... (3 indent ) Multiple pass systems

580

. (1 indent ) Vehicular guidance systems with single axis control

581

.. (2 indent ) Radio-controlled

582

.. (2 indent ) Celestial navigation

583

.. (2 indent ) Landing systems

584

.. (2 indent ) Altitude or pitch control

585

.. (2 indent ) Roll control

586

.. (2 indent ) Yaw control

587

.. (2 indent ) Land vehicles

588

.. (2 indent ) Marine vehicles

589

... (3 indent ) Submarine and torpedo systems

590

. (1 indent ) Multiple mode systems

591

.. (2 indent ) With mode-engagement features (e.g., manual to automatic)

592

.. (2 indent ) Fine and coarse systems

593

... (3 indent ) Separate fine and coarse motors

594

... (3 indent ) Digital systems

595

... (3 indent ) Multiple speed synchro systems

596

.. (2 indent ) Combined "on-off" and proportional control

597

.. (2 indent ) Slewing systems

598

... (3 indent ) With a separate slewing motor

599

. (1 indent ) Pulse-width modulated power input to motor (e.g., "duty cycle" systems)

600

. (1 indent ) Digital or numerical systems

601

.. (2 indent ) Digital comparison

602

... (3 indent ) Commutating switch-type encoder

603

.. (2 indent ) Pulse-counting systems

604

.. (2 indent ) Analogue comparison

605

... (3 indent ) Synchro or resolver (e.g., transmitter simulators)

606

. (1 indent ) Frequency- or phase-modulated systems

607

.. (2 indent ) Frequency comparison

608

.. (2 indent ) Phase comparison

609

. (1 indent ) "Reset" systems (P.I.)

610

.. (2 indent ) With rate (P. I. D.) (e.g., reset windup prevention)

611

. (1 indent ) With stabilizing features (e.g., anti-hunting, damping)

612

.. (2 indent ) Electric braking near balance (e.g., dynamic)

613

... (3 indent ) D.C. in A.C. windings

614

.. (2 indent ) Friction-braking near balance including magnetic or eddy current brakes

615

.. (2 indent ) By auxiliary feedback loop

616

... (3 indent ) Rate feedback

617

.... (4 indent ) Variable rate feedback

618

.... (4 indent ) Tachometer feedback

619

.. (2 indent ) Variable gain bandwidth

620

.. (2 indent ) Nonlinear circuits

621

.. (2 indent ) Lead or lag networks

622

... (3 indent ) A.C. networks

623

.. (2 indent ) Load stabilization (e.g., viscous, magnetic or friction dampers)

624

.. (2 indent ) By deadband at null (e.g., threshold circuits)

625

. (1 indent ) Plural servomotors

626

. (1 indent ) Limit or end-stop control

627

.. (2 indent ) Secto-scanning systems

628

. (1 indent ) "Feelback" systems

629

. (1 indent ) Unwanted harmonic or voltage component elimination quadrature rejection systems

630

. (1 indent ) Antibacklash systems (e.g., with unidirectional approach to balance)

631

. (1 indent ) Antistatic friction features (e.g., "dither" voltage)

632

. (1 indent ) With compensating features

633

.. (2 indent ) "Two-cycle error" compensation

634

.. (2 indent ) Temperature compensation

635

. (1 indent ) With signal-, voltage-, or current-limiting

636

. (1 indent ) "Sampling" systems including miscellaneous "sampled data" control systems

637

. (1 indent ) Analog computation

638

. (1 indent ) With particular "error-detecting" means

639

.. (2 indent ) Plural, diverse conditions

640

.. (2 indent ) Photoelectric or optical-type measuring instruments

641

.. (2 indent ) With particular temperature measuring instrument

642

.. (2 indent ) With liquid level measuring instruments

643

.. (2 indent ) With moisture content or wetness measuring instruments

644

.. (2 indent ) With flow measuring instruments

645

.. (2 indent ) With fluid pressure measuring instruments

646

.. (2 indent ) With force or weight measuring instruments

647

.. (2 indent ) With magnetic field measuring instruments

648

.. (2 indent ) With inertial, direction or inclination measuring instrument

649

... (3 indent ) Stable platforms

650

.. (2 indent ) With current, voltage or electrical power measuring instruments

651

.. (2 indent ) With acceleration measuring instruments

652

.. (2 indent ) With particular position measuring instruments

653

... (3 indent ) Magnetic transducers

654

... (3 indent ) Synchro control transmitter-transformer systems

655

.... (4 indent ) With synchro differential

656

... (3 indent ) Differential transformer systems

657

.... (4 indent ) Linear differential transformer

658

.... (4 indent ) "E" type transformer

659

.... (4 indent ) "Microsyn" type

660

.... (4 indent ) "Inductosyn" systems

661

.... (4 indent ) Resolver systems

662

... (3 indent ) Variable capacitor systems

663

... (3 indent ) Potentiometer systems including autotransformers and Wheatstone bridges

664

.... (4 indent ) Minor arc seeking

665

.... (4 indent ) Continuous rotation, unlimited range

666

.... (4 indent ) Controlled tap and slidewire

667

.... (4 indent ) With a bridge in the feedback circuit

668

....• (5 indent ) Recalibrating systems

669

... (3 indent ) Standing wave

670

... (3 indent ) Contact resistance

671

. (1 indent ) With particular motor control system responsive to the "actuating signal"

672

.. (2 indent ) Discontinuous or "on-off" control

673

... (3 indent ) Seeking switch type

674

... (3 indent ) Wheatstone bridge type

675

.. (2 indent ) One transmitter or controller element follows another

676

.. (2 indent ) Transmitter or controller element returned (e.g., force balance systems)

677

.. (2 indent ) With particular servoamplifier

678

... (3 indent ) Differential amplifier

679

... (3 indent ) Diverse types of amplifiers in different stage

680

... (3 indent ) Magnetic servoamplifiers

681

... (3 indent ) Solid-state servoamplifiers

682

... (3 indent ) Rotating amplifier (e.g., "Ward Leonard" control)

683

.. (2 indent ) With particular phase discriminator

684

.. (2 indent ) With particular modulator or detector (e.g., choppers)

685

.. (2 indent ) "Step-by-step" motors in closed-loop servos

686

.. (2 indent ) Reciprocating or oscillating motors

687

.. (2 indent ) Linear movement motors

688

.. (2 indent ) Shaded pole motors

689

TORQUING MOTORS

690

SELF-SYNCHRONOUS TYPE OF MOTOR

691

. (1 indent ) With means to amplify transmitter signals

692

. (1 indent ) Having induction or "selsyn" type transmitter

693

. (1 indent ) Having impedance-type transmitter

694

. (1 indent ) Having commutated dynamoelectric machine transmitter

695

. (1 indent ) Having commutating switch-type transmitter

696

OPEN-LOOP STEPPING MOTOR CONTROL SYSTEMS

34

PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS

35

. (1 indent ) Motors with diverse motions (e.g., reciprocating and rotary motors)

37

. (1 indent ) Plural reciprocating or oscillating motors

38

. (1 indent ) Plural linear-movement motors

39

. (1 indent ) Work and feed motors (e.g., indexing)

40

. (1 indent ) Motor biased against rotation

41

. (1 indent ) Having electrical synchronizing interconnections

42

.. (2 indent ) Between windings on auxiliary dynamo-electric machines

43

.. (2 indent ) D.C. or A.C. commutator motors with slip rings

44

.. (2 indent ) Between induction motor secondaries

45

. (1 indent ) Mechanically coupled in fixed ratio of movement

46

.. (2 indent ) Motors having unlike operating characteristics

47

... (3 indent ) Synchronous and nonsynchronous motors

48

.. (2 indent ) Mechanically coupled in torque opposition

49

. (1 indent ) Motors electrically connected in cascade or tandem

50

.. (2 indent ) With means for effecting other motor interconnections

51

. (1 indent ) Plural, diverse motor controls for different motors

52

. (1 indent ) Slipping and/or racing control for electric motors

53

. (1 indent ) Plural, diverse motor controls

54

.. (2 indent ) Motor-reversing

55

... (3 indent ) With running-speed control

56

.... (4 indent ) And braking

57

... (3 indent ) And braking

58

... (3 indent ) And acceleration control

59

.. (2 indent ) Running-speed control

60

... (3 indent ) And braking

61

... (3 indent ) And acceleration control

62

... (3 indent ) And automatic starting and/or stopping and/or with time delay

63

.. (2 indent ) Braking

64

.. (2 indent ) Acceleration control

65

. (1 indent ) Motor-reversing

66

. (1 indent ) Running-speed control

67

.. (2 indent ) Diverse speeds for different motors

68

.. (2 indent ) Relative motor speed control

69

... (3 indent ) With speed-difference detector

70

.... (4 indent ) Electrical-type detectors

71

....• (5 indent ) Voltage and/or current difference detector

72

....• (5 indent ) Dynamoelectric machine detector

73

....• (5 indent ) Synchronously operated impedance detectors

74

....• (5 indent ) Synchronously actuated switch detectors

75

....•. (6 indent ) Plural switches connected in series

76

.... (4 indent ) Differential-gearing detector

77

... (3 indent ) Controlling motor speed in response to speed of another motor

78

.... (4 indent ) Controlling A.C. frequency or rate of electrical impulses to other motor

79

... (3 indent ) Control of both armature (or primary) and field (or secondary) circuits

80

... (3 indent ) Armature or primary circuit control

81

... (3 indent ) Field secondary circuit control

82

.. (2 indent ) Armature or primary circuit control

83

... (3 indent ) Series-parallel armature circuit connections

84

.. (2 indent ) Field or secondary circuit control

85

. (1 indent ) Synchronizing or phasing control

86

. (1 indent ) Braking

87

.. (2 indent ) Motor used as braking generator (dynamic braking)

88

... (3 indent ) Load or current division during braking

89

... (3 indent ) Motor as exciter for another motor

90

. (1 indent ) Acceleration control

91

.. (2 indent ) Accelerating motors in succession or selectively

92

.. (2 indent ) Control of both armature (or primary) and field (or secondary) circuits

93

... (3 indent ) Series-parallel connected armature or primary circuits

94

.. (2 indent ) Armature or primary circuit control

95

... (3 indent ) Series-parallel connections

96

.... (4 indent ) With armature circuit impedance

97

.. (2 indent ) Field or secondary circuit control

98

. (1 indent ) Load control

99

.. (2 indent ) Fixed ratio of load or current division

100

... (3 indent ) By field or secondary circuit control

101

. (1 indent ) Starting and/or stopping

102

.. (2 indent ) Sequential or successive starting and/or stopping

103

.. (2 indent ) Selective starting and/or stopping

104

.. (2 indent ) Armature (or primary) circuit control

105

. (1 indent ) Plural, diverse or diversely controlled sources of armature (or primary) supply

106

.. (2 indent ) Diverse sources

107

... (3 indent ) A.C. and D.C.

108

.... (4 indent ) Different voltages

109

... (3 indent ) Different voltages

110

... (3 indent ) Different frequencies

111

. (1 indent ) Series-parallel connected motors

112

. (1 indent ) Parallel connected motors

113

. (1 indent ) Series connected motors

114

IMPACT, MECHANICAL SHOCK, OR VIBRATION-PRODUCING MOTORS

115

MOTOR WITH DIVERSE MOTIONS (E.G., ROTARY AND RECIPROCATING)

116

NONMAGNETIC MOTOR

117

. (1 indent ) Thermoelectric motor

118

MAGNETOSTRICTIVE MOTOR

119

RECIPROCATING OR OSCILLATING MOTOR

120

. (1 indent ) Stopping after predetermined number of reciprocations or cycles (including single cycle)

121

. (1 indent ) Having means to produce a progressing or traveling motor field flux

122

. (1 indent ) Plural, diverse or diversely controlled motor windings

123

.. (2 indent ) Polyphase or diverse or diversely controlled sources of motor supply

124

... (3 indent ) A.C. and D.C. sources

125

.. (2 indent ) Unidirectionally conductive devices in energizing circuit

126

. (1 indent ) Energizing winding circuit control

127

.. (2 indent ) Automatic in response to predetermined position, movement or condition in or of the motor or driven device

128

... (3 indent ) Noise, sound, vibration, movement or position of motor

129

.. (2 indent ) By means for producing periodic electrical pulses in the energizing circuit

130

... (3 indent ) Electrical oscillation or condenser charging and/or discharging circuits

131

... (3 indent ) Motor or escapement-controlled means

132

.. (2 indent ) By space-discharge or unidirectionally conductive devices in energizing circuit

133

.. (2 indent ) By impedance devices in energizing circuit

134

.. (2 indent ) By circuit making and/or braking devices

135

LINEAR-MOVEMENT MOTORS

136

AUXILIARY MEANS FOR PRODUCING MECHANICAL STARTING OR ACCELERATING TORQUE

137

. (1 indent ) By auxiliary motor

138

SPACE-DISCHARGE-DEVICE COMMUTATED MOTOR

139

BATTERY-FED MOTOR SYSTEMS

140

GENERATOR-FED MOTOR SYSTEMS HAVING GENERATOR CONTROL

141

. (1 indent ) Automatic generator control and/or with time-delay means

142

.. (2 indent ) Responsive to diverse conditions or with time-delay means

143

... (3 indent ) Plural electrical conditions

144

.. (2 indent ) Armature or primary current of motor

145

.. (2 indent ) Terminal voltage or counter e.m.f. of motor

146

.. (2 indent ) Speed of motor or driven device

147

.. (2 indent ) Speed or frequency of generator or its drive means

148

. (1 indent ) Alternating-current-motor system

149

. (1 indent ) With plural, diverse or diversely controlled generators

150

. (1 indent ) With flywheel on generator or on motor

151

. (1 indent ) Control of both the generator and the circuit to the motor

152

.. (2 indent ) With motor control

153

. (1 indent ) Control of both the generator and the motor

154

.. (2 indent ) Control of excitation (field) circuit of both

156

. (1 indent ) Plural, diverse or diversely actuated, generator control means

157

. (1 indent ) Generator speed control

158

. (1 indent ) Generator field circuit control

159

HAVING ROTOR ELEMENT BIASED AGAINST ROTATION

160

. (1 indent ) By resilient biasing means (e.g., spring)

161

WITH FLYWHEEL OR MASSIVE ROTARY MEMBER

162

CONTROL BY PATTERNS OR OTHER PREDETERMINED SCHEDULE MEANS

163

. (1 indent ) Motor running-speed control

164

.. (2 indent ) Cyclically varying or repeated speed schedules

700

SYNCHRONOUS MOTOR SYSTEMS

701

. (1 indent ) Hysteresis or reluctance motor systems

702

. (1 indent ) Antihunting or damping

703

. (1 indent ) Braking

704

. (1 indent ) Pole changing motor winding circuits

705

. (1 indent ) Synchronization systems

706

.. (2 indent ) With armature power removal upon failure to synchronize or loss of synchronism

707

... (3 indent ) Upon failure to resynchronize

708

... (3 indent ) Responsive to thermal electrical element in system

709

.. (2 indent ) Having different armature voltage prior to synchronism

710

.. (2 indent ) With d.c. field removal

711

... (3 indent ) With electronic control element in system

712

.. (2 indent ) With field excitation application

713

... (3 indent ) Responsive to slip voltage frequency in d.c. field winding

714

... (3 indent ) Responsive to armature current

715

... (3 indent ) Responsive to rotor speed or rotor driven member

716

. (1 indent ) Field winding circuits

717

.. (2 indent ) Responsive to a motor condition

718

... (3 indent ) Induced voltage in field winding

719

... (3 indent ) Speed responsive field power sources

720

. (1 indent ) Armature winding circuits

721

.. (2 indent ) Responsive to rotor shaft position or speed

722

.. (2 indent ) Having electronic power conversion circuit

723

.. (2 indent ) Having variable frequency supply

724

.. (2 indent ) Having a plurality of windings or winding portions

725

REPULSION MOTOR SYSTEMS

726

. (1 indent ) With added motor winding or convertible to series motor

727

INDUCTION MOTOR SYSTEMS

728

. (1 indent ) Repulsion start

729

. (1 indent ) Power-factor control

730

. (1 indent ) With plural separately movable rotors

731

. (1 indent ) With voltage source connected to motor secondary

732

.. (2 indent ) Electronic device controls current in secondary circuit

733

.. (2 indent ) Commutator connected to secondary winding

734

.. (2 indent ) Slip rings connected to secondary winding

735

... (3 indent ) Rotor shaft coupled to dynamoelectric machine

736

.... (4 indent ) Slip rings connected to dynamoelectric machine winding

737

. (1 indent ) Self-cascaded motor windings

738

. (1 indent ) With commutated winding

739

. (1 indent ) Reversing

740

.. (2 indent ) With diverse motor operation

741

... (3 indent ) With braking

742

.... (4 indent ) Electromagnetic brakes

743

....• (5 indent ) Generator action

744

....• (5 indent ) Plugging

745

.. (2 indent ) With controlled saturable reactor in primary circuit

746

... (3 indent ) Two phase motor

747

.. (2 indent ) Two phase motor

748

... (3 indent ) With plural primary windings or winding portions having common connection

749

.. (2 indent ) Operating from a single phase source

750

... (3 indent ) Shaded pole motor

751

... (3 indent ) Split phase motor with capacitor interchangeably connected in series with either primary winding

752

.... (4 indent ) With controlled electronic device to provide the series connection

753

... (3 indent ) With de-energizable start winding

754

.... (4 indent ) With separate winding or winding portion energized for each direction of rotation

755

.... (4 indent ) Automatic current reversal on start winding

756

.. (2 indent ) With controlled electronic switch for phase reversal

757

. (1 indent ) Braking

758

.. (2 indent ) With diverse operation

759

.. (2 indent ) Dynamic braking

760

... (3 indent ) Direct current primary winding braking circuit

761

.... (4 indent ) Rotating rotor controls braking current in primary winding

762

.... (4 indent ) With a.c. to d.c. conversion circuit

763

.. (2 indent ) Reversal of power to primary winding

764

... (3 indent ) Three phase power reversal

765

.. (2 indent ) Eddy current braking circuits

766

. (1 indent ) Primary and secondary circuits

767

. (1 indent ) Primary circuit control

768

.. (2 indent ) Three phase motor operated from single phase source

769

... (3 indent ) With dynamoelectric converter

770

.. (2 indent ) Dual voltage motors

771

.. (2 indent ) Delta-wye, plural wye, or plural delta connected primary windings

772

.. (2 indent ) Plural speed

773

... (3 indent ) Pole changing

774

.... (4 indent ) Single phase motor

775

....• (5 indent ) Separate primary running winding for each pole number, alternately energized

776

....• (5 indent ) Entire primary running winding energized for each running speed

777

.... (4 indent ) Separate primary running winding for each pole number, alternately energized

778

.. (2 indent ) Starting control

779

... (3 indent ) With speed control

780

... (3 indent ) Three phase motor with variable transformer to initially adjust voltage to motor windings

781

... (3 indent ) Operating from a single phase source

782

.... (4 indent ) With protective features

783

....• (5 indent ) Thermal starting and thermal overload protection

784

.... (4 indent ) Impedance for reducing current during starting operation

785

.... (4 indent ) Start winding removed during running operation

786

....• (5 indent ) By electronic switch

787

....•. (6 indent ) With transformer for sensing the run winding current

788

....•. (6 indent ) With variable temperature coefficient resistor in switch control circuit

789

....• (5 indent ) By electromagnetic switch

790

....•. (6 indent ) With relay coil in series with main winding

791

....• (5 indent ) By thermal switch

792

....•. (6 indent ) With variable temperature coefficient impedance element

793

....• (5 indent ) By centrifugal switch

794

.... (4 indent ) Capacitor run motor with different capacitance at starting

795

....• (5 indent ) With plural capacitors

796

.... (4 indent ) Saturable winding in capacitor run motor circuit

797

.... (4 indent ) Phase splitting using stator winding mutual inductance or saturable winding

798

.. (2 indent ) Responsive to motor condition

799

... (3 indent ) Responsive to speed or rotation phase angle

800

.... (4 indent ) With controlled power conversion

801

....• (5 indent ) Including inverter

802

....•. (6 indent ) Responsive to an additional condition

803

....•.. (7 indent ) With controlled a.c. to d.c. circuit in inverter supply

804

.... (4 indent ) With controlled magnetic reactance

805

... (3 indent ) Responsive to motor voltage

806

.. (2 indent ) Condition responsive

807

.. (2 indent ) Frequency control

808

... (3 indent ) With voltage magnitude control

809

... (3 indent ) With voltage phase angle control

810

... (3 indent ) With voltage pulse time control

811

.... (4 indent ) Pluse width modulation or chopping

812

.. (2 indent ) Voltage control

813

... (3 indent ) With transformer

814

... (3 indent ) With impedance control

815

.... (4 indent ) Saturable reactor

816

... (3 indent ) Single phase, split phase motors

817

.... (4 indent ) With capacitor

818

. (1 indent ) Secondary circuit control

819

.. (2 indent ) Open secondary member or portion thereof with means to open or close the circuit thereto

820

.. (2 indent ) Closed secondary member or member portion with means to change electrical characteristics thereof

821

.. (2 indent ) Impedance control of secondary circuit

822

... (3 indent ) Responsive to motor condition

823

.... (4 indent ) Rotor speed or position responsive

824

....• (5 indent ) Centrifugal force of rotor controls secondary circuit impedance

825

.... (4 indent ) Induction motor current

826

....• (5 indent ) Primary motor current

827

.... (4 indent ) Frequency of secondary current

828

.... (4 indent ) Secondary voltage

829

... (3 indent ) By manual operation

830

. (1 indent ) With relatively movable cooperating motor parts to control energized motor

831

.. (2 indent ) Axially movable cooperating parts

832

.. (2 indent ) Dual stators, one or both angularly movable

244

ALTERNATING CURRENT COMMUTATING MOTORS

245

. (1 indent ) Universal or A.C.-D.C. motors

246

SERIES MOTORS

247

. (1 indent ) Convertible for nonseries motor operation

248

. (1 indent ) With plural, diverse or diversely connected or controlled sources of e.m.f.

249

. (1 indent ) Control by motor circuit impedance

250

.. (2 indent ) Impedance in series with field windings and in parallel to armature winding

251

. (1 indent ) Field circuit control

252

.. (2 indent ) Plural, diverse or diversely connected or controlled field coils

253

HOMOPOLAR OR UNIFORM FIELD MOTORS

254

SELF-COMMUTATED IMPULSE OR RELUCTANCE MOTORS

255

PLURAL DIVERSE MOTOR CONTROLS

256

. (1 indent ) Motor-reversing

257

.. (2 indent ) With running-speed control

258

... (3 indent ) And braking

259

.... (4 indent ) And acceleration control

260

... (3 indent ) And acceleration control

261

.. (2 indent ) With braking

262

... (3 indent ) And acceleration control

263

.. (2 indent ) With acceleration control

264

.. (2 indent ) With automatic starting and/or stopping

265

... (3 indent ) Stopping upon predetermined movement of or position of motor or driven device

266

.... (4 indent ) At limit-of-travel of motor or driven device

267

....• (5 indent ) Dual control circuits alternately energized

268

. (1 indent ) Running-speed control

269

.. (2 indent ) With braking

270

... (3 indent ) And acceleration control

271

.. (2 indent ) With acceleration control

272

.. (2 indent ) With automatic starting and/or stopping

273

. (1 indent ) Motor braking

274

.. (2 indent ) With acceleration control

275

.. (2 indent ) With automatic starting and/or stopping

276

. (1 indent ) Acceleration control

277

.. (2 indent ) With automatic starting and/or stopping

278

... (3 indent ) In response to an electrical condition

279

.... (4 indent ) Automatic stopping means less responsive during acceleration

280

MOTOR-REVERSING

281

. (1 indent ) Periodic- or intermittent-reversing

282

.. (2 indent ) In response to movement or position (e.g., limit of travel) of motor or driven device

283

. (1 indent ) Automatic and/or with time-delay means

284

.. (2 indent ) With means to delay reversing until motor substantially stops

285

.. (2 indent ) Instant of, or passage or predetermined time or having time-delay means

286

.. (2 indent ) Movement or position of motor or driven device

287

. (1 indent ) Armature or primary circuit control

288

.. (2 indent ) Plural, diverse or diversely controlled armature windings

289

... (3 indent ) Phase-reversal

290

... (3 indent ) Selectively energized windings

291

.. (2 indent ) Armature or primary current reversal

292

... (3 indent ) By shifting motor brushes or selecting appropriate set of brushes

293

... (3 indent ) Reversing polarity of current supplied to armature circuit

294

.... (4 indent ) Wheatstone bridge type

295

.... (4 indent ) Potentiometer-controlled

296

. (1 indent ) Field circuit control

297

.. (2 indent ) Plural, diverse or diversely controlled field windings

298

... (3 indent ) Simultaneous energization

299

.... (4 indent ) With means for short-circuiting a winding

300

.. (2 indent ) Field-circuit current reversed

Class 388 subclasses 800-841 are an integral part of this Class (Class 318), as shown by the position of this box, and follows the schedule hierarchy of this Class, retaining all pertinent definitions and Class lines of this class.

362

BRAKING

363

. (1 indent ) "Spotting" or adjustment of braking controller during coasting

364

. (1 indent ) Automatic and/or with time-delay means

365

.. (2 indent ) Plural diverse conditions or with time delay

366

.. (2 indent ) Condition of motor or driven device

367

... (3 indent ) Armature or primary current

368

... (3 indent ) Armature or primary circuit voltage or terminal or counter e.m.f. voltage

369

... (3 indent ) Speed, acceleration, movement or position of motor or driven device

370

. (1 indent ) Plural, diverse or diversely controlled braking means

371

.. (2 indent ) Including both friction braking "plugging" and/or dynamic braking

372

. (1 indent ) Friction braking

373

. (1 indent ) "Plugging" or application of reverse power to motor

374

.. (2 indent ) Energy flow interrupted when motor stops

375

. (1 indent ) Dynamic braking

376

.. (2 indent ) Regenerative

377

... (3 indent ) With additional source of e.m.f.

378

.... (4 indent ) In series with armature or primary circuit

379

.. (2 indent ) Locally closed armature circuit

380

... (3 indent ) Closed through impedance or the like

381

... (3 indent ) With field or secondary circuit control

382

. (1 indent ) By auxiliary electric generator or by magnetic attraction or repulsion devices

383

"ANTI-BRAKING" OR BRAKING-PREVENTION MEANS

Class 388 subclasses 842-860 are an integral part of this Class (Class 318), as shown by the position of this box, and follows the schedule hierarchy of this Class, retaining all pertinent definitions and Class lines of this class.

430

MOTOR LOAD, ARMATURE CURRENT OR FORCE CONTROL DURING STARTING AND/OR STOPPING

431

. (1 indent ) Initial, "cracking" or "starting from rest" torque control

432

CONSTANT MOTOR CURRENT, LOAD AND/OR TORQUE CONTROL

433

. (1 indent ) Control of motor load or device driven

434

LIMITATION OF MOTOR LOAD, CURRENT, TORQUE OR FORCE (E.G., PREVENTING OVERLOAD)

436

NONRUNNING, ENERGIZED MOTOR

437

PHASING OR ANGULAR OR LINEAR POSITIONAL CONTROL OF MOVABLE ELEMENT OF THE MOTOR

438

POWER FACTOR CONTROL OF ARMATURE OR LINE CIRCUIT

439

MOTOR COMMUTATION CONTROL SYSTEMS

440

HAVING PLURAL, DIVERSE OR DIVERSELY CONTROLLED SOURCES

441

. (1 indent ) A.C. and D.C.

442

. (1 indent ) Different voltages

443

PERIODIC, REPETITIOUS OR SUCCESSIVE OPERATIONS CONTROL OF MOTOR, INCLUDING "JOG" AND "INCH" CONTROL

444

. (1 indent ) Variable periods or intervals between controlling operations

445

AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING)

446

. (1 indent ) With nonautomatic control means (e.g., manual)

447

. (1 indent ) Nonresponsive or less responsive for limited periods

448

. (1 indent ) Anti-hunting

449

. (1 indent ) With respect to a fixed standard, master or reference device

450

.. (2 indent ) Electrical detector

451

.. (2 indent ) Mechanically vibrating device as reference device (e.g., tuning fork)

452

. (1 indent ) Plural, diverse conditions or with time-delay means

453

.. (2 indent ) Electrical condition

454

... (3 indent ) Plural, diverse electrical conditions

455

.... (4 indent ) Voltage and current (e.g., watts)

456

. (1 indent ) Rate-of-change of a condition

457

.. (2 indent ) Interia-type detector

458

.. (2 indent ) Electrical condition

459

. (1 indent ) Terminal voltage or counter-electromotive force of controlled motor

460

. (1 indent ) Sound, supersonic vibration or mechanical vibration

461

. (1 indent ) Speed or rate-of-movement

462

.. (2 indent ) Centrifugal-type detector

463

.. (2 indent ) Tachometer-type detector

464

... (3 indent ) Electric generator tachometer

465

.. (2 indent ) In excess of a predetermined valve

466

. (1 indent ) Movement, position, or limit-of-travel

467

.. (2 indent ) Plural sensing means for determining plural positions or plural limits-of travel

468

.. (2 indent ) Limit-of-travel control means

469

... (3 indent ) Overloading limit-of-travel-type control means

470

.. (2 indent ) Magnitude of movement or revolutions

471

. (1 indent ) Responsive to thermal conditions

472

.. (2 indent ) Of motor control means

473

.. (2 indent ) In or about the motor being controlled

474

. (1 indent ) Motor load, armature or primary or secondary circuit current

475

.. (2 indent ) Mechanical-type detector (e.g., by yielding spring devices)

476

.. (2 indent ) In excess of a predetermined magnitude

477

... (3 indent ) Intentionally increased load

478

. (1 indent ) Electrical conditions in circuit other than controlled motor circuit

479

.. (2 indent ) Voltage

480

. (1 indent ) Radiant energy

481

. (1 indent ) Pressure in a fluid or granular material

482

. (1 indent ) Level of fluid or granular material

483

. (1 indent ) Moisture content or wetness

484

. (1 indent ) Time or with time-delay means

485

.. (2 indent ) Dash-pot or other mechanical delay means

486

.. (2 indent ) Pilot- or servo-motors

487

.. (2 indent ) Electromagnetic or inductive time-delay means

488

. (1 indent ) Responsive to stress in body or material

489

. (1 indent ) Responsive to direction, inclination or angular position of bodies

490

WITH SIGNALS, METERS, RECORDERS OR TESTING DEVICES

491

CONTROL OF BOTH MOTOR CIRCUIT AND MOTOR STRUCTURE

492

MOTOR MAGNETIC ENERGY DISSIPATION

493

CONTROL OF BOTH ARMATURE (OR PRIMARY) CIRCUIT AND FIELD (OR SECONDARY) CIRCUIT

494

ARMATURE (OR PRIMARY) CIRCUIT CONTROL

495

. (1 indent ) Plural, diverse or diversely controlled, armature or primary windings

496

.. (2 indent ) Polyphase windings

497

.. (2 indent ) Series-parallel

498

.. (2 indent ) Energized or controlled in predetermined sequence

499

.. (2 indent ) Wound or energized in magnetic opposition

500

. (1 indent ) Plural sources of voltage (including counter e.m.f. cells)

501

. (1 indent ) By shunting armature or primary winding

502

. (1 indent ) Variable length or tapped armature winding

503

. (1 indent ) Frequency or pulsation control

504

. (1 indent ) Voltage control

505

. (1 indent ) By means to space-discharge devices

506

.. (2 indent ) Plural, diverse or diversely connected or controlled space-discharge devices

507

.. (2 indent ) Having discharge-control means (e.g., grids)

508

. (1 indent ) Impedance-controlled

509

.. (2 indent ) Plural, diverse or diversely controlled impedances

510

... (3 indent ) Including both reactor and condenser

511

.. (2 indent ) Inherently or self-variable impedance

512

.. (2 indent ) Inductive reactor controlled

513

... (3 indent ) Having auxiliary means for saturating reactor core

514

.. (2 indent ) Resistor-controlled

515

... (3 indent ) Having short-circuiting means

516

.... (4 indent ) Short-circuited step-by-step

519

. (1 indent ) By armature or primary circuit-making and/or breaking

520

.. (2 indent ) Electromagnetically actuated

521

FIELD OR SECONDARY CIRCUIT CONTROL

523

. (1 indent ) Plural, diverse or diversely connected or controlled field windings

524

.. (2 indent ) Convertible number-of-poles type (e.g., 4-pole or 6-pole)

525

.. (2 indent ) Differentially wound or energized windings

526

.. (2 indent ) Series-parallel

527

.. (2 indent ) Series field winding

528

.. (2 indent ) With means to short circuit a field winding

529

.. (2 indent ) Selectively energized

530

. (1 indent ) Plural, diverse or diversely connected or controlled sources of field circuit voltage

531

. (1 indent ) Variable length or tapped field winding

532

. (1 indent ) By means of space-discharge device in field circuit

533

. (1 indent ) Impedance-controlled

534

.. (2 indent ) Plural, diverse or diversely connected or controlled field circuit impedances

535

... (3 indent ) Wheatstone bridge

536

. (1 indent ) By field circuit making and/or breaking

537

.. (2 indent ) Intermittently operated

538

MOTOR STRUCTURE ADJUSTMENT OR CONTROL

539

. (1 indent ) Both armature and field structures rotatable or adjustable

540

. (1 indent ) Rotor element movable axially

541

. (1 indent ) Brush or other current-collector control

542

.. (2 indent ) Having movement toward or from cooperating part (e.g., brush lifted from commutator)

543

THREE-OR-MORE-POSITIONS MOTOR CONTROLLER SYSTEMS

544

. (1 indent ) With other motor control device

545

.. (2 indent ) Main line switch

546

. (1 indent ) Plural, diverse or diversely controlled controllers

547

.. (2 indent ) Plural control stations

548

. (1 indent ) Plural control stations

549

. (1 indent ) Return to "off", "starting" or "neutral" positions

550

.. (2 indent ) Power-operated controllers

551

. (1 indent ) Knee- or foot-operated controllers

552

. (1 indent ) Power-actuated controllers

553

.. (2 indent ) Separately actuated controller contacts

554

... (3 indent ) Electromagnetic actuated

555

.. (2 indent ) Electromagnetic actuated

556

... (3 indent ) Reciprocating or oscillating electromagnetic means

557

... (3 indent ) Intermittent or step-by-step operation

558

MISCELLANEOUS

	FOREIGN ART COLLECTIONS

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

	DIGESTS

DIG2

WINDSHIELD WIPER CONTROLS

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