Itt Automotive Europe Gmbh

Alfred Teves Gmbh

Itt Manufacturing Enterprises, Inc.

Jurgen Bauer

Peter Drott

Heinz Zingel

Wolfgang Ritter

Ralf Harth

Ralf Jakobi

Karlheinz Bill

Horst Kramer

Holger Von Hayn

Rudolf Thiel

Ruprecht Sinnhuber

Wilfried Wagner

Peter Boehm

Kai-Michael Graichen

Manfred Rueffer

Vladimir Dusil

Hans-Peter Metzen

Peter Bohm

Hans-Georg Keferstein

Andreas Doll

Ulrich Knothe

Peter Kraft

Holger Von Havn

Bastian Witte

Disc brake with automatic adjusting device

Brake Disk

Method and apparatus for controlling braking pressure

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

To optimize the ratio of forces which are caused during operation of a vacuum brake power booster, in particular the response force and the resetting force, according to the present invention, means are provided which permit applying the pneumatic pressure, which prevails in the ventilatable working chamber, to the side of the valve member of a control valve remote from the sealing seats of the control valve, the control valve controlling the pneumatic pressure differential between a vacuum and the atmospheric pressure.

Vacuum brake power booster for automotive vehicles

In order to be able to adjust the distance between a reaction disc and a second part of a a two-part valve piston interacting with the former in a completely assembled vacuum brake power booster, a tubular sleeve is provided according to the invention which is disposed coaxially with a piston rod actuating the valve piston, which is axially slidable and which is engageable with a first part of said valve piston being coupled to the second part by means of a threaded union in order to apply a torque to the first piston part.

Actuating unit for a hydraulic automotive vehicle brake system

In order to enable a brake booster to operate both with a pressure above atmospheric and with atmospheric pressure without any negative mutual influences of the two energy types and without any change in the responding behavior of the device in case of failure of either energy type, the invention provides a pneumatic system which, during the operation of the brake booster with pressure above atmospheric, causes a force constituent to become active so as to counteract the forces caused by the increased pressure difference and acting on the control valve piston as well as on the control valve housing.

Brake booster

Growing community of inventors

Wiesbaden, Germany

Jurgen Bauer