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Class Information
Number: 318/66
Name: Electricity: motive power systems > Plural, diverse or diversely controlled electric motors > Running-speed control
Description: Subject matter in which means are provided for controlling the running speed of two or more electric motors.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7432673 |
Method, medium, and apparatus controlling current gain change of a spindle motor driver |
Oct. 7, 2008 |
| 7429836 |
Motor driver circuit, control method thereof, and electronic apparatus |
Sep. 30, 2008 |
| 7425806 |
System and method for controlling a variable speed drive |
Sep. 16, 2008 |
| 7424337 |
Method for increasing the control dynamics of a load driven by a driveshaft of direct drive |
Sep. 9, 2008 |
| 7417386 |
Electronic line shaft |
Aug. 26, 2008 |
| 7362060 |
Self-learning control system and method for controlling fan speed |
Apr. 22, 2008 |
| 7352141 |
Device and method to monitor an apparatus |
Apr. 1, 2008 |
| 7319299 |
Determining types of cooling fans used in a personal computer thereby using optimum parameters to control each unique cooling fan |
Jan. 15, 2008 |
| 7301293 |
Electric motor car control apparatus |
Nov. 27, 2007 |
| 7292002 |
Control method for twin synchronization |
Nov. 6, 2007 |
| 7288909 |
Electrical vehicle controller |
Oct. 30, 2007 |
| 7279856 |
Environmental and health monitoring circuitry for storage processor I/O annex module |
Oct. 9, 2007 |
| 7256558 |
Brushless motor and disk drive device using the same |
Aug. 14, 2007 |
| 7248005 |
Dual motor arrangement and control method |
Jul. 24, 2007 |
| 7248004 |
Cooling fan, in particular for motor vehicles |
Jul. 24, 2007 |
| 7233454 |
Floppy disk control circuit and floppy disk apparatus |
Jun. 19, 2007 |
| 7230394 |
Apparatus and method for controlling motor in washing machine |
Jun. 12, 2007 |
| 7138772 |
Electrically movable vehicle and control program for driving electrically movable vehicle |
Nov. 21, 2006 |
| 7095188 |
Serial fan set and rotation speed-matching curve generation method thereof |
Aug. 22, 2006 |
| 7095189 |
Method for controlling a brushless electric motor |
Aug. 22, 2006 |
| 7075255 |
Variable speed controller for a family of multi-tap motors |
Jul. 11, 2006 |
| 7053566 |
Drive train for hybrid electric vehicle |
May. 30, 2006 |
| 7047770 |
Washing machine agitation action control |
May. 23, 2006 |
| 6977473 |
Travel control method of electric vehicle |
Dec. 20, 2005 |
| 6933687 |
Dual motor configuration with primary brushless motor and secondary integrated speed control motor |
Aug. 23, 2005 |
| 6882121 |
Control device |
Apr. 19, 2005 |
| 6819065 |
Dynamic braking of a tape motor |
Nov. 16, 2004 |
| 6812656 |
Sequenced pulse width modulation method and apparatus for controlling and powering a plurality of direct current motors |
Nov. 2, 2004 |
| 6798159 |
VSD control |
Sep. 28, 2004 |
| 6756750 |
Electric vehicle |
Jun. 29, 2004 |
| 6658335 |
Method and apparatus for motor velocity measurement compensation in electric power steering damping |
Dec. 2, 2003 |
| 6573671 |
Fan reliability |
Jun. 3, 2003 |
| 6476570 |
Device and process for controlling the motor drives of textile machines |
Nov. 5, 2002 |
| 6329771 |
Lightweight motorized wheelchair |
Dec. 11, 2001 |
| 6216080 |
Wheel module for a vehicle with an electrically controlled braking system (EBS) |
Apr. 10, 2001 |
| 6211640 |
Motor drive control system |
Apr. 3, 2001 |
| 6170402 |
Roller coaster control system |
Jan. 9, 2001 |
| 6163116 |
Method and apparatus for the control of gantry machines |
Dec. 19, 2000 |
| 6152542 |
Automatic controller |
Nov. 28, 2000 |
| 6133700 |
Torque controller system having a torque processor with improved tractive effort distribution |
Oct. 17, 2000 |
| 6060847 |
Interactive amusement ride |
May. 9, 2000 |
| 6025682 |
Infinitely variable wash action |
Feb. 15, 2000 |
| 6020709 |
Automatic controller |
Feb. 1, 2000 |
| 6002218 |
Control device for air conditioner |
Dec. 14, 1999 |
| 5898280 |
DC shunt (or compound) motor pair capable of synchronous operation |
Apr. 27, 1999 |
| 5866997 |
System for directing an apparatus such as a crane bridge moving on wheels along rails |
Feb. 2, 1999 |
| 5712542 |
Postage meter with improved handling of power failure |
Jan. 27, 1998 |
| 5623400 |
Control system for smoke exhauster |
Apr. 22, 1997 |
| 5610819 |
System for enhancing wheel traction in a locomotive by reapplication of excitation using an S-shaped curve |
Mar. 11, 1997 |
| 5569986 |
Soft start control apparatus for drive motors of a rotor spinning machine |
Oct. 29, 1996 |
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