Patent ID: 6384557
Filing Date: 2002-05-07
Classification: B60S,Y10S

Abstract:
A windshield wiper drive device for driving a windshield wiper (11) in an alternating motion in a range of motion (17) between two turning point positions (B, D), havinga motor (1) for moving the windshield wiper (11), a detector (6) for detecting a time at which the windshield wiper (11) moves past a given position (A, C) in the range of motion (17) between the turning point positions (B, D), a control circuit (8) for reversing the direction of motion of the motor (1) at each turning point position (B, D) in response to a signal from the detector (6), characterized in that the windshield wiper drive device includes an incremental transducer (19) for detecting a distance traveled by the windshield wiper (11) from the given position (A, C) depending on a number of revolutions of a motor shaft of the motor (1); and that the control circuit (8) reverses the direction of motion of the motor (1) as soon as it is detected that the windshield wiper (11) has traveled a defined distance relative to the given position.