Itt Industries, Inc.

Swf Auto-electric Gmbh

Wilhelm Dorr

Kurt Bauer

Eckhardt Schmid

Hans Prohaska

Reinhard Edele

Oldrich Krizek

Alfred Kohler

Christian Roth

Werner Pfitzenmaier

A connection and two step method of manufacturing is disclosed for a drive unit for a wiper arm system which consists of a wiper shaft mounted in a bore through a crank arm. The wiper shaft is formed with a groove disposed within the thickness of the crank arm and material from one surface of the crank arm is displaced to form an annular recess which causes crank arm material adjacent the groove to be radially displaced into a groove formed in the wiper shaft to form an axial holding element. The radial distance R1 of the recess from the crank arm bore is substantially equal to the axial distance A1 of the groove below the one crank arm surface to facilitate the extruding process. Knurled areas on the shaft on either side of the groove are press fit into the crank arm bore as a first step in assembling the shaft to the crank arm, bringing a flange into abutment against the other surface of the crank arm.

Drive unit for a wiper system of motor vehicles

Drive unit for a wiper system of motor vehicles and method of

A windshield wiper assembly is disclosed which includes a pivot pin between the side walls of the main yoke. A connecting element for a wiper arm is mounted on the yoke. The wiper arm projects from the back of the main yoke and is bent such that it laterally extends beside the wiper blade.

Windshield wiper

Growing community of inventors

Bietigheim-Bissingen, Germany

Wilhelm Dorr