Danfoss Power Solutions Aps

Sauer Danfoss Aps

Helle Bonde Rasmussen

Nils E Sevelsted

Bendt Porskrog

Mogens Frederiksen

Niels Bjarne Hansen

Morten Hoeck Petersen

Per Bonde

A hydraulic overpressure valve () is provided comprising a valve housing (), a valve seat () located in said valve housing and having a seat center and a seat center axis (), a cone element () movable relatively to said valve seat (), said cone element () having a cone () protruding at least partly into said valve seat () and having a cone center axis (), and force generating means acting on said cone element () in a direction towards said valve seat (). Such a hydraulic overpressure valve should be operated with low noise. To this end said cone () is movable along a path of movement in which said cone center axis is kept outside said seat center axis ().

Hydraulic overpressure valve and hydraulic machine

A hydraulic steering device is provided comprising a supply port arrangement having a supply port (P) and a return port (T), a working port arrangement having two working ports (L, R), direction valve means () arranged between said supply port arrangement and said working port arrangement, at least two fluid meters (), each of said fluid meters () having a movable metering element (), said metering elements () being connected by a shaft (), said shaft () having an axis, selector valve means () being provided, said selector valve means () in a first position arranging said fluid meters () hydraulically in parallel and in a second position shutting off one of said fluid meters (), said selector valve means () having a valve element () shiftable in an direction parallel to said axis. It is an object to reduce wear in said hydraulic steering device in a simple manner. To this end said selector valve means () are arranged between said two fluid meters (), said shaft () extending through said valve element ().

Hydraulic steering device

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Sønderborg, Denmark

Helle Bonde Rasmussen