Windshield wiper drive device

US6384557B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Marcellus Weber · Achern, DE
• Peter Braun · Hungen, DE
• Michael W. May · Crystal Lake, US

Key dates

• Filing date: Jun 30, 2000
• Grant date: May 7, 2002
• Expiry date: Jun 30, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S318/02
• WIPO field: Transport
• WIPO sector: Mechanical engineering

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 (A, C) includes a 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), a control circuit (8) for reversing the direction of motion of the motor (1) at each turning point position (B, D), and an incremental transducer for detecting the distance traveled by the windshield wiper (11) from the given position (A, C). 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.