Dual windshield-wiper assembly

US4581786A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Dietmar Brummer · Bühlertal, DE
• Jan Dietrich · Laufenburg (Baden), DE
• Dieter Wollenschlager · Bühlertal, DE
• Rolf Zumbulte · Bühlertal, DE

Key dates

• Filing date: Jan 7, 1985
• Grant date: Apr 15, 1986
• Expiry date: Jan 7, 2005

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60S1/345
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A windshield-wiper assembly has a single base normally pivotal about a base axis generally perpendicular to a windshield and a generally one-piece inner arm support pivotal on the base about an inner axis offset from and transverse to the base axis and generally parallel to the windshield. This inner arm support has an outer end extending radially generally away from both axes and a single spring is engaged offset from the inner axis between the inner arm support and base and urges the inner arm support rotationally in one direction on the base. A pair of similar outer arm bars extend radially of the inner axis from the outer end and have relative to the inner axis respective inner ends fixed in the one-piece inner arm support and outer ends offset generally parallel to the inner axis from each other. Respective wiper blades carried on the outer ends of the arm bars are pivotal thereon about outer axes generally parallel to the inner axis. Normally the spring urges the blades against the windshield.