Itt Automotive Europe Gmbh

Itt Manufacturing Enterprises, Inc.

Alfred Teves Gmbh

Heinz Zingel

Peter Drott

Jurgen Bauer

Wolfgang Ritter

Ralf Harth

Karlheinz Bill

Horst Kramer

Holger Von Hayn

Michael Zydek

Ruprecht Sinnhuber

Thomas Berthold

Michael Vogt

Christof Klesen

Thorsten Neu

Peter Bohm

Ulrich Knothe

Thomas Bartsch

Holger Von Havn

Stefan Krebs

Bastian Witte

Method of operating a pneumatic brake booster

Hydraulic automotive vehicle brake system

A vacuum brake power booster for automotive vehicles includes a booster housing whose interior is subdivided into a vacuum chamber and a working chamber by a moveable wall. A control housing carries the moveable wall and accommodates a control valve which controls a pressure differential acting upon the moveable wall. The control valve has at least two sealing seats cooperating with an elastic valve member and is operable by an actuating rod. One of the sealing seats is operable, irrespective of the actuating rod, by an electromagnet whose armature is in force-transmitting interaction with one of the sealing seats. An electrical switching apparatus is also included, the control signals of which influence the current supply of the electromagnet thereby enabling its deactivation. The switching apparatus are operable by a relative movement between a valve piston and the control housing.

Vacuum brake power booster

The invention relates to a hydraulic power booster, in particular for the actuation of a master cylinder in a hydraulic brake system for motor vehicles. The booster comprises a pressure fluid source, a control device for the control of the pressure level in a booster pressure chamber, an actuating element for the actuation of the control device which actuating element is acted upon by an input force, a converting device for the conversion of the hydraulic pressure into a translatory force which converting device is acted upon by a pressure fluid, and a force transmission element which, preferably is an operating rod for a tandem master cylinder. A semi-rigid force transmission element is arranged in the structure for the transmission of force from the actuating element to the force transmission element in order to obtain a two-stage effect.

Hydraulic power booster

Growing community of inventors

Bad Camberg, Germany

Heinz Zingel