Device for determining the state of a wiper blade

US6057660A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hans Meier · Ottersweier, DE
• Guenther Riehl · Bühl, DE
• Henry Blitzke · Laufenburg (Baden), DE

Key dates

• Filing date: Mar 3, 1999
• Grant date: May 2, 2000
• Expiry date: Mar 3, 2019

Classification

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

Abstract

A device which determines a condition of at least one wiper blade of a motor-vehicle windshield wiper. The device includes a rain sensor controlling the motor-vehicle windshield wiper and being utilized for determining the condition of the wiper blade. The device also includes an evaluation circuit receiving data from the rain sensor. The evaluation circuit evaluates wear and tear of a rubber wiper element of the wiper blade based on one of a slow and continuous change of the data and a quick and continuous change of the data provided by the rain sensor.