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Class Information
Number: 318/472
Name: Electricity: motive power systems > Automatic and/or with time-delay means (e.g., automatic starting and/or stopping) > Responsive to thermal conditions > Of motor control means
Description: Subject matter in which the sensing means is arranged to be responsive to the temperature or thermal conditions of an impedance in the circuit of the motor being controlled, or of other means employed for controlling the motor.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8704470 Motor driving circuit Apr. 22, 2014
8674641 System and method for regulating motor rotation speed Mar. 18, 2014
8634976 Systems and methods for managing torque capability in electric motor systems Jan. 21, 2014
8624538 Motor driving apparatus having function of dynamically switching converter operation mode of AC/DC converter Jan. 7, 2014
8581533 Motor driver and method of controlling the same Nov. 12, 2013
8569984 Motor controller Oct. 29, 2013
8564236 Power tool Oct. 22, 2013
8508168 Linear actuator Aug. 13, 2013
8493016 Semiconductor circuit device including switching element Jul. 23, 2013
8487576 Load drive control device and load drive control method Jul. 16, 2013
8487575 Electric motor stator winding temperature estimation Jul. 16, 2013
8461792 Pulse width modulation fan controller Jun. 11, 2013
8454751 Apparatus, systems and methods for removing debris from a surface Jun. 4, 2013
8436567 Fan speed control circuit May. 7, 2013
8384328 Control methodology for an AC starter-generator system Feb. 26, 2013
8384325 Motor driving circuit and method for driving motor Feb. 26, 2013
8378614 Fan control circuit Feb. 19, 2013
8344675 Rechargeable electric power tool Jan. 1, 2013
8324855 Fan control system Dec. 4, 2012
8324854 Fan control system Dec. 4, 2012
8278864 Compressor control Oct. 2, 2012
8274249 Motor drive device with lock protection function Sep. 25, 2012
8253364 Heat-dissipating device and method for controlling fan speed Aug. 28, 2012
8237387 System and method for controlling duty cycle of CPU fan Aug. 7, 2012
8217614 Fan delay controlling apparatus Jul. 10, 2012
8198838 Circuit for controlling rotation speed of computer fan Jun. 12, 2012
8174227 Fan control system May. 8, 2012
8093850 Fan control system Jan. 10, 2012
8089236 System and method for adjusting pulse width modulation signals according to component temperatures in a computer Jan. 3, 2012
8084981 Rechargeable electric power tool Dec. 27, 2011
8084979 Method for testing an electric motor Dec. 27, 2011
8080962 Motorised barrier roller Dec. 20, 2011
8072169 Method of controlling washing machine and motor Dec. 6, 2011
8008877 Electrically-driven dump truck Aug. 30, 2011
7973510 Apparatus for controlling inverter Jul. 5, 2011
7889462 Protective circuit for protection of an appliance, in particular an electric motor, against thermal overloading Feb. 15, 2011
7859213 Control device and control method Dec. 28, 2010
7843156 Method and apparatus for active voltage control of electric motors Nov. 30, 2010
7844170 Method for controlling fan speed Nov. 30, 2010
7789794 Method and system for controlling a propulsion system of an alternatively powered vehicle Sep. 7, 2010
7768222 Automated control of rotational velocity of an air-moving device of an electronics rack responsive to an event Aug. 3, 2010
7759891 Apparatus and method for detecting abnormal conditions of a motor Jul. 20, 2010
7746016 Fan controller Jun. 29, 2010
7640621 Thermal protection system for electrical appliance Jan. 5, 2010
7640439 Main power off-delay device for the power supply of computer system Dec. 29, 2009
7621460 Data storage system having cooling fan speed protection Nov. 24, 2009
7616443 Cooling device for electrical power units of electrically operated vehicles Nov. 10, 2009
7589490 Motor control system for the PWM control of an electric motor Sep. 15, 2009
7504796 Inverter device Mar. 17, 2009
7394216 Automatic anti-trap device Jul. 1, 2008

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