Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
B60S1/00—Cleaning of vehicles
B60S1/02—Cleaning windscreens, windows or optical devices
B60S1/04—Wipers or the like, e.g. scrapers
B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
B60S1/0814—Wipers or the like, e.g. scrapers characterised by the drive electrically driven using several drive motors; motor synchronisation circuits
H—ELECTRICITY
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
H02P5/48—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing mechanical values representing the speeds
H02P5/49—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing mechanical values representing the speeds by intermittently closing or opening electrical contacts