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Class Information
Number: 318/785
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
Description: Subject matter wherein the primary member consists of a main primary winding and a start winding and the circuit includes means for de-energizing the start winding by removing part or all of the start winding from the circuit which supplies the electrical energy to the start and the run winding.

Sub-classes under this class:

Class Number Class Name Patents
318/793 By centrifugal switch 32
318/789 By electromagnetic switch 18
318/786 By electronic switch 116
318/791 By thermal switch 16

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8487577 Method and apparatus for motor control Jul. 16, 2013
8274253 Control circuit for single-phase AC motor for dryer Sep. 25, 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
8067920 Starting control apparatus and method for motor Nov. 29, 2011
8022657 Washing machine wiring to reduce mechanical timer contact welding Sep. 20, 2011
7777992 Motor start circuit Aug. 17, 2010
7679307 Electronic method for starting a compressor Mar. 16, 2010
7630180 Motor starter circuit Dec. 8, 2009
7511446 System and method for starting a wound rotor motor Mar. 31, 2009
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
7402976 Apparatus and method for controlling operation of compressor Jul. 22, 2008
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
7034426 Electric motor windings Apr. 25, 2006
6903532 Method and apparatus for starting an induction motor Jun. 7, 2005
6894455 Performance improvement of integrated starter alternator by changing stator winding connection May. 17, 2005
6788023 Motor starter circuit, particularly for refrigerator compressors Sep. 7, 2004
6787960 AC induction motor and method of starting same 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
6479961 Starting system for an electric motor Nov. 12, 2002
6407530 Device and method for controlling supply of current and static capacitance to compressor Jun. 18, 2002
6397294 Disk system and power-on sequence for the same May. 28, 2002
6320348 Time rate of change motor start circuit Nov. 20, 2001
6304046 Driving control circuit of a hood motor Oct. 16, 2001
6288516 Food processor motor controller Sep. 11, 2001
6232742 Dc/ac inverter apparatus for three-phase and single-phase motors May. 15, 2001
6160372 Solid state motor start method and apparatus Dec. 12, 2000
6121749 Variable-speed drive for single-phase motors Sep. 19, 2000
6097275 Motor starting and protecting apparatus Aug. 1, 2000
6051953 Brushless exciterless field system for AC synchronous machines Apr. 18, 2000
6034503 Method and apparatus for starting motors Mar. 7, 2000
5973473 Motor control circuit Oct. 26, 1999
5861697 Single-phase induction motor and rotor assembling apparatus Jan. 19, 1999
5621295 Device for driving using an electric motor comprising means for measuring the displacement of the driven body Apr. 15, 1997
5598080 Starting device for a single-phase induction motor Jan. 28, 1997
5589753 Rate effect motor start circuit Dec. 31, 1996
5561357 Starting device and circuit for starting single phase motors Oct. 1, 1996
5559418 Starting device for single phase induction motor having a start capacitor Sep. 24, 1996
5528120 Adjustable electronic potential relay Jun. 18, 1996
5512809 Apparatus and method for starting and controlling a motor Apr. 30, 1996
5469040 Operating circuit including an oscillating circuit capacitor coupled to an auxiliary winding for an apparatus that measures the unbalance of a rotary member Nov. 21, 1995
5402053 Single phase to three phase converter capable of variable speed motor operation Mar. 28, 1995
5325035 Control device for intermittent operation of an induction motor Jun. 28, 1994
5302885 Starting device for a single phase induction motor Apr. 12, 1994
5247236 Starting device and circuit for starting single phase motors Sep. 21, 1993
5227710 Multiple speed single phase motor Jul. 13, 1993
5216343 Motor construction and method for limiting spin-up time in a hard disk drive Jun. 1, 1993
5212435 Variable speed asynchronous induction motor May. 18, 1993

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