Daimler-benz Ag

Mercedes-benz Aktiengesellschaft

Dieter Dorrie

Paul Schwerdt

Gunter Weiger

Karl Kirschenhofer

A device works according to the displacement principle, i.e., at least two displacers are provided in a common displacer working chamber or in displacer working chambers communicating with one another, and are drivingly coupled together by a pressure transmission medium. Elastomer material is disposed as the pressure transmission medium, at least in the region of one displacer.

Device for stepping up or transmitting forces and strokes

An apparatus is provided for sequentially actuating a pair of valves used to control a flow of brake fluid in a vehicle. Each valve is yieldably biased toward a normal position. The apparatus includes an actuation member that is tiltable in response to movement of a piezoelectric member to accomplish sequential operation of the valve pair, the actuating member being tiltable during a first adjustment stroke counter to the force of the first valve spring about a first axis of rotation defined by a bearing point fixed to the housing and by a compression spring in order to actuate the first valve and move the first tappet to a selected position. The actuating member is also tiltable during a second adjustment stroke counter to the force of the compression spring about a second axis of rotation defined by the bearing point fixed to the housing and by the moved first tappet in order to actuate the second valve.

Actuating device for two mutually dependently actuable valves

Electrically operated valve for liquid or gaseous media, suitable for internal combustion engines, possessing an electrically-activated actuating element with a short actuating displacement, this actuating element acting on a control valve, and possessing a nozzle element which unblocks a nozzle when a defined pressure is present in the supply line. The actuating element is connected to an actuating-element base and is pressed, by means of an actuating-element spring, against the control-valve plate of the control valve, this control-valve plate being pressed, by a stronger control-valve spring, against a fixed reference plane. In order to compensate for changes in the length of the actuating element, resulting from mechanical forces and/or from temperature changes, a collect-type clamping device is provided, which is subjected to the pressure of the medium and clamps the actuating element while it is being operated.

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Plochingen, Germany

Dieter Dorrie