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Class Information
Number: 318/400.01
Name: Electricity: motive power systems >
Description:










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
8710788 Brushless motor drive apparatus and drive method Apr. 29, 2014
8704472 Brushless electric motor provided with rotor having intermediate magnetic pole Apr. 22, 2014
8704473 Motor for a synchronous electric machine and method for routing power Apr. 22, 2014
8704475 Current source inverter device Apr. 22, 2014
8704479 System and method for determining the start position of a motor Apr. 22, 2014
8692491 Brushless motor driver and brushless motor system Apr. 8, 2014
8692494 Single-phase brushless motor drive circuit Apr. 8, 2014
8692493 Methods, apparatuses, and systems for speed control of a movable partition Apr. 8, 2014
8692490 Control system for a straight slot direct current motor actuator Apr. 8, 2014
8686671 Method for compensating nonlinearity of resolver for hybrid and fuel cell vehicles Apr. 1, 2014
8686674 Method for controlling brushless DC motor Apr. 1, 2014
8680799 Method and apparatus for applying a commutation advance automatically in a brushless DC motor Mar. 25, 2014
8680807 Motor control apparatus and image forming apparatus Mar. 25, 2014
8674636 Power conversion device Mar. 18, 2014
8674646 Vehicle display system and motor control device therefor Mar. 18, 2014
8674647 Drive device for alternating current motor and electric motor vehicle Mar. 18, 2014
8669727 Detection device for detecting magnetic pole position of synchronous motor, and control apparatus equipped therewith Mar. 11, 2014
8664899 Motor drive control device Mar. 4, 2014
8659248 Drive device for electric power conversion circuit Feb. 25, 2014
8659251 Wiper motor Feb. 25, 2014
8659805 Motor driving control device, image forming apparatus, and image forming method Feb. 25, 2014
8659247 Control device and method for controlling an electronically commutated motor, and motor Feb. 25, 2014
8653774 Motor driving circuit Feb. 18, 2014
8653769 Calculating airflow values from HVAC systems Feb. 18, 2014
8648562 Single power supply dual converter open-winding machine drive Feb. 11, 2014
8643317 Single phase DC brushless motor controller and method for controlling rotation speed and direction of single phase DC brushless motor Feb. 4, 2014
8644992 Method to improve washer motor efficiency and performance Feb. 4, 2014
8638053 Motor control circuit and method that synchronize a speed of an electric motor to an external clock signal Jan. 28, 2014
8624532 System and method for synchronizing sinusoidal drive to permanent magnet motor without distorting drive voltage Jan. 7, 2014
8618757 Electric power control system and efficiency optimization process for a polyphase synchronous machine Dec. 31, 2013
8618755 Control device for a motor and method for controlling said motor Dec. 31, 2013
8618754 Motor control apparatus and image forming apparatus Dec. 31, 2013
8610383 Combined electric device for powering and charging Dec. 17, 2013
8604729 Control of a permanent-magnet motor Dec. 10, 2013
8604733 Electric actuator including two current-controlled voltage inverters powering an electrical machine, and reconfigurable in the presence of a defect Dec. 10, 2013
8604739 Vector control for an axial gap motor Dec. 10, 2013
8593093 Electric motor control apparatus Nov. 26, 2013
8593087 Magnetic pole position estimation method for AC synchronous motor Nov. 26, 2013
8593086 System and method including feed-forward control of a brushless synchronous motor Nov. 26, 2013
8587250 Apparatus and method for rotating-sensor-less identification of magneto-mechanical parameters of an AC synchronous motor Nov. 19, 2013
8587234 Apparatus and method for rotating-sensorless identification of equivalent circuit parameters of an AC synchronous motor Nov. 19, 2013
8587233 Speed-defined torque control Nov. 19, 2013
8587232 System and method for aligning a resting rotor to a known position Nov. 19, 2013
8587230 Method and system for prevention of motor reversal Nov. 19, 2013
8581533 Motor driver and method of controlling the same Nov. 12, 2013
8569984 Motor controller Oct. 29, 2013
8564229 Device and method for controlling motor Oct. 22, 2013
8558494 Driving device of brushless DC motor for fan Oct. 15, 2013
8558489 Micro motor Oct. 15, 2013
8552604 Drive unit of electric motor and motorized equipment using the drive unit Oct. 8, 2013











 
 
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