Zf Lenksysteme Gmbh

Robert Boschgmbh

Zf Friedrichshafen Ag

Wolfgang Reuter

Johannes Schmid

Martin Budaker

Kurt Burger

Johannes Voigt

Helmut Bareis

Oliver Hetzel

Ralf Zischka

Frank Geth&ouml;fer

Reiner Kunz

John Hasenclever

A device for exposing an opening in a housing part of a steering gear in a vehicle steering system has a closure element that closes the opening and a component that, when it comes into contact with a liquid, changes at least one of its properties such that, after the component cooperates with the closure element, the closure element exposes the opening.

Device for uncovering an opening in a housing part of a steering gear

For a power assisted steering system for vehicles, in particular passenger cars, there is provided a hydraulic circuit with a servopump, a three-way flow regulator valve which is located at the junction between the pump and a servoactuator and has a measuring throttle, located in the inflow to the servoactuator, as a fixed throttle and an outflow throttle which is located in a bypass of the latter and which determines a variable throttle cross section by means of a piston which is charged alternately as a pressure compensator. The piston, which is charged via an active actuator element, changes the outflow throttle cross section as a function of the current applied in order to change the volume flow which passes via the measuring throttle.

Servo steering system for motor vehicles

Described is a radial piston pump with a pump housing ( ), which has a plurality of cylinder bores ( ) arrayed in star shape around a cam ( ), for the reception of pistons ( ) and possesses inlet ( ) and outlet ( ) when penetrate to each cylinder inner chamber ( ) with a therein compressible working volume. In accord with the invention, each cylinder inner chamber ( ) is provided with at least one relief opening, which connects the working volumes during a compression stroke of the piston ( ) with a space of lesser pressure for the reduction of the pressure gradient and also thereby reducing the noise of the pump.

Radial piston pump with noise reduction

A device for vacuum coating bulk material includes a rotating holder for accommodating the bulk material, a plasma coating source arranged within the rotating holder, as well as a device, arranged within the rotating holder, for cleaning the bulk material using plasma. During the coating process, the rotational speed of the rotating holder is less than the speed necessary for producing a centrifugal force for fixing the bulk material against the inner wall of the rotating holder. The plasma coating source and the plasma cleaning device are arranged in such a way that their spheres of action overlap.

Device for vacuum coating bulk material

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Florstadt, Germany

Wolfgang Reuter