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Class Information
Number: 318/221G
Name: Electricity: motive power systems >

Sub-classes under this class:

Class Number Class Name Patents
318/1 Electric motor with nonmotor driving means (e.g., axle drive, manual drive) 10
318/114 Impact, mechanical shock, or vibration-producing motors 169
318/115 Motor with diverse motions (e.g., rotary and reciprocating) 60
318/116 Nonmagnetic motor 255
318/118 Magnetostrictive motor 63
318/119 Reciprocating or oscillating motor 119
318/135 Linear-movement motors 707
318/136 Auxiliary means for producing mechanical starting or accelerating torque 12
318/138 Space-discharge-device commutated motor 1,487
318/139 Battery-fed motor systems 1,256
318/140 Generator-fed motor systems having generator control 165
318/159 Having rotor element biased against rotation 21
318/16 Supplied or controlled by space-transmitted electromagnetic or electrostatic energy (e.g., by radio) 276
318/161 With flywheel or massive rotary member 65
318/162 Control by patterns or other predetermined schedule means 38
318/17 Portable-mounted motor and/or portable-mounted electrical systems therefor 62
318/244 Alternating current commutating motors 57
318/246 Series motors 40
318/253 Homopolar or uniform field motors 5
318/254 Self-commutated impulse or reluctance motors 2,683
318/255 Plural diverse motor controls 67
318/280 Motor-reversing 539
318/3 With particular motor-driven load device 99
318/34 Plural, diverse or diversely controlled electric motors 296
318/362 Braking 196
318/383 "anti-braking" or braking-prevention means 11
318/430 Motor load, armature current or force control during starting and/or stopping 379
318/432 Constant motor current, load and/or torque control 1,453
318/434 Limitation of motor load, current, torque or force (e.g., preventing overload) 1,374
318/436 Nonrunning, energized motor 60
318/437 Phasing or angular or linear positional control of movable element of the motor 122
318/438 Power factor control of armature or line circuit 100
318/439 Motor commutation control systems 1,435
318/440 Having plural, diverse or diversely controlled sources 80
318/443 Periodic, repetitious or successive operations control of motor, including "jog" and "inch" control 308
318/445 Automatic and/or with time-delay means (e.g., automatic starting and/or stopping) 396
318/490 With signals, meters, recorders or testing devices 359
318/491 Control of both motor circuit and motor structure 36
318/492 Motor magnetic energy dissipation 25
318/493 Control of both armature (or primary) circuit and field (or secondary) circuit 58
318/494 Armature (or primary) circuit control 57
318/521 Field or secondary circuit control 16
318/538 Motor structure adjustment or control 58
318/543 Three-or-more-positions motor controller systems 9
318/558 Miscellaneous 109
318/560 Positional servo systems (e.g., servomechanisms) 907
318/689 Torquing motors 60
318/690 Self-synchronous type of motor 19
318/696 Open-loop stepping motor control systems 1,310
318/700 Synchronous motor systems 582
318/725 Repulsion motor systems 14
318/727 Induction motor systems 494
318/DIG.2 Windshield wiper controls 361

Patents under this class:

Patent Number Title Of Patent Date Issued

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