Wiper blade

US6004659A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Wolfgang Leutsch · Bühl, DE
• Steven Desmet · Grimbergen, BE
• Hubert Verelst · Tienen, BE
• Dirk De Coninck · Londerzeel, BE
• Paul Wynen · Hamont-Achel, BE

Key dates

• Filing date: Oct 22, 1997
• Grant date: Dec 21, 1999
• Expiry date: Oct 22, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31826
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a wiper blade having a head (1) for fastening in the wiper holder bracket, a tilting rib (2), and a lip (3). It is characterized in that the head (1) comprises a stiff polymer, hardened by halogenation, with a Shore A hardness of 60 to 85; the tilting rib (2) comprises a comparatively soft, elastic polymer that is not hardenable or not substantially hardenable by halogenation, with a Shore A hardness of 50 to 75; and the lip (3) comprises a polymer hardenable by halogenation having a Shore A hardness of 60 to 85. The Shore A hardness of the polymer comprising the tilting rib (2) is less expediently by at least two units than the Shore A hardness of the polymer or polymers that form the head (1) and the lip (3).