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Class Information
Number: 318/786
Name: Electricity: motive power systems > Induction motor systems > Primary circuit control > Starting control > Operating from a single phase source > Start winding removed during running operation > By electronic switch
Description: Subject matter wherein the means for removing part or all of the start winding includes an electronic switch means to de-energize the start winding.

Sub-classes under this class:

Class Number Class Name Patents
318/787 With transformer for sensing the run winding current 23
318/788 With variable temperature coefficient resistor in switch control circuit 42

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8432122 Method and device for starting single-phase asynchronous motors Apr. 30, 2013
8390239 Control circuit for single-phase AC motor of dryer Mar. 5, 2013
8378619 Motor start circuit for an induction motor Feb. 19, 2013
8373378 Systems and method for motor speed control Feb. 12, 2013
8299735 Fan system and brake control circuit thereof Oct. 30, 2012
8274253 Control circuit for single-phase AC motor for dryer Sep. 25, 2012
8269450 Winding switching apparatus and winding switching system Sep. 18, 2012
8258738 Low current electric motor starter Sep. 4, 2012
8248020 Starting circuit for single-phase AC motor Aug. 21, 2012
8237395 Dual-speed single-phase AC motor Aug. 7, 2012
8228020 Apparatus and method for controlling hybrid motor Jul. 24, 2012
8198854 Starting circuit for single-phase AC motor and method for starting single-phase AC motor Jun. 12, 2012
8120305 Method for starting single phase induction motor and electronic relay using the same Feb. 21, 2012
8093858 AC line voltage conditioner and controller Jan. 10, 2012
8072179 Electronic starter device for an electric motor, in particular for a compressor of a refrigerating circuit of an electric household appliance Dec. 6, 2011
8022657 Washing machine wiring to reduce mechanical timer contact welding Sep. 20, 2011
7777992 Motor start circuit Aug. 17, 2010
7777438 Motor start circuit Aug. 17, 2010
7633260 Apparatus and method for starting and stopping an AC induction motor Dec. 15, 2009
7630180 Motor starter circuit Dec. 8, 2009
7612519 Control arrangement for an induction motor compressor having at least three windings, a torque-augmentation circuit, a starting capacitor and a resistive element Nov. 3, 2009
7554284 Inductance contactless starter Jun. 30, 2009
7511446 System and method for starting a wound rotor motor Mar. 31, 2009
7408320 Apparatus for power control by phase gating and a method for harmonic reduction Aug. 5, 2008
7408321 Control arrangement for an induction motor compressor having at least three windings, a torque-augmentation circuit, a starting capacitor and a resistive element Aug. 5, 2008
7378816 System and method for confirming a detection of low voltage and shorted SCRs May. 27, 2008
7248015 Variable speed motor control circuit Jul. 24, 2007
7239109 Single-phase induction motor Jul. 3, 2007
7095207 Load and speed sensitive motor starting circuit and method Aug. 22, 2006
7071650 Synchronous induction motor and electric hermetic compressor using the same Jul. 4, 2006
7061204 Motor starter device having reduced power consumption Jun. 13, 2006
7045987 Method and arrangement in connection with slip-ring machine May. 16, 2006
6977478 Method, system and program product for controlling a single phase motor Dec. 20, 2005
6930459 Method for reducing the influence of a DC current component in the load current of an asynchronous motor Aug. 16, 2005
6894455 Performance improvement of integrated starter alternator by changing stator winding connection May. 17, 2005
6847183 Electronic power supply for a synchronous motor with permanent-magnet rotor having two pairs of poles Jan. 25, 2005
6844691 Ventilator having an abnormal operation indication device Jan. 18, 2005
6801007 Electrically-operated actuator system Oct. 5, 2004
6788023 Motor starter circuit, particularly for refrigerator compressors Sep. 7, 2004
6781342 System and method for soft starting a three phase motor Aug. 24, 2004
6756756 Phase detector motor start switch Jun. 29, 2004
6570359 Motor starting circuit May. 27, 2003
6495982 Electric motor control Dec. 17, 2002
6486625 Device for controlling a starter for a motor vehicle Nov. 26, 2002
6329784 Starter circuit for motors, particularly for refrigerator compressors Dec. 11, 2001
6304046 Driving control circuit of a hood motor Oct. 16, 2001
6239523 Cutout start switch May. 29, 2001
6160372 Solid state motor start method and apparatus Dec. 12, 2000
6138048 Methods and devices for controlling a disk drive Oct. 24, 2000
6049188 Single-phase motor starters Apr. 11, 2000

1 2 3

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