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Class Information
Number: 318/111
Name: Electricity: motive power systems > Plural, diverse or diversely controlled electric motors > Series-parallel connected motors
Description: Subject matter in which means are provided for connecting the armature or primary windings of one or more electric motors in series circuit relationship with the armature or primary windings of one or more other electric motors at one time and in parallel circuit relationship at another time; or for connecting the armature or primary windings of one or more electric motors in series circuit relationship with the armature or primary windings of one or more other electric motors, and simultaneously connecting the armature or primary circuit of one or more electric motors in parallel circuit relationship with the armature of primary circuit of one or more other electric motors.

Patents under this class:

Patent Number Title Of Patent Date Issued
8593090 Motor controller having integrated communications configurations Nov. 26, 2013
8581536 Method for controlling three single-phase motors and moving a platform in a direction of the normal Nov. 12, 2013
8569992 Stepper motor controller and method for controlling same Oct. 29, 2013
8310177 Battery management system for a cordless tool Nov. 13, 2012
8248013 Fan device with improved speed control module and plural fan system constructed thereby Aug. 21, 2012
8248009 Motor controller having integrated communications configurations Aug. 21, 2012
8164295 Stepping motor controlling device, method, and storage medium Apr. 24, 2012
8080966 Motor control architecture for simultaneously controlling multiple motors Dec. 20, 2011
8072174 Motor controller with integrated serial interface having selectable synchronization and communications Dec. 6, 2011
7923957 Control system and method for motor drivers Apr. 12, 2011
7859200 Mutually cross-interlocked multiple asynchronous AC induction electrical machines Dec. 28, 2010
7602128 Device and method to configure same Oct. 13, 2009
7402965 DC common bus self-protection method and system Jul. 22, 2008
7352141 Device and method to monitor an apparatus Apr. 1, 2008
7294980 Fan control system Nov. 13, 2007
7135826 Fan control system Nov. 14, 2006
7038421 Method and system for multiple servo motor control May. 2, 2006
7023169 Method for changing speed of motor group Apr. 4, 2006
6933698 Method of driving a servo motor with a built-in drive circuit Aug. 23, 2005
6914855 Circuit for driving motor coils in stepping motors Jul. 5, 2005
6897627 Control device for dual-motor wiper systems May. 24, 2005
6856106 H-bridge apparatus and method Feb. 15, 2005
6814546 Multifan-equipped apparatus for cooling objects mounted at local interior regions and provided with fan-unit assembly and operation monitoring means having an error detector Nov. 9, 2004
6812657 Motor control for two motors Nov. 2, 2004
6653810 Motor control system Nov. 25, 2003
6614194 Motor fan control apparatus Sep. 2, 2003
6522096 Control circuit for a robot power supply Feb. 18, 2003
6404151 Electric vehicle drive Jun. 11, 2002
6404150 Accessory motor drive power supply system for an electric vehicle Jun. 11, 2002
6281645 Motor control system and image forming apparatus using the same Aug. 28, 2001
6028404 Motor drive circuit system utilizing multiple DC power driving devices switchable between parallel, and series/parallel combinations Feb. 22, 2000
5136222 Controller for automated apparatus, and method of controlling said apparatus Aug. 4, 1992
4841202 Speed-limited electrically compensated constant speed drive Jun. 20, 1989
4697124 Integral series parallel and power brake controller for a transit vehicle Sep. 29, 1987
4695776 Power converter for an electrically-compensated constant speed drive Sep. 22, 1987
4638222 DC motor driving circuit for eliminating spurious transition conditions Jan. 20, 1987
4634942 Apparatus for controlling electric cars Jan. 6, 1987
4549119 Control system and method for operating mining machine traction motors and the like Oct. 22, 1985
4532458 Variable-speed electrical machines Jul. 30, 1985
4492907 Combined series and parallel servo control for aircraft Jan. 8, 1985
4453111 Electric drive for submarines Jun. 5, 1984
4309642 Device for feeding a wire electrode Jan. 5, 1982
4288727 Modular motor and control means and method Sep. 8, 1981
4251757 Power control system and apparatus thereof Feb. 17, 1981
4208620 Plural electric motors driving common load and having interconnections for load control Jun. 17, 1980
4092571 Power matching system for a train of individually powered transit vehicles May. 30, 1978
3938013 D. C. Motor control system effecting changes in the connections of the armature and variations in current flow through the field Feb. 10, 1976

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