Mannesmann Rexroth Corporation

Karl Staub

Horst Fischer

Jorg Dantlgraber

Josef Budel

Albert Muller

A hydraulic vane-type pump is provided having a venting valve which is located immediately at the pressure space of the pump, i.e., avoiding any additional passage means between the pressure space of the pump and the venting valve.

Vane pump

In general terms the invention provides for a direct actuated pressure regulated vane-type pump having a adjustment piston which is under the influence of the pump pressure. The adjustment piston is coupled to said cam ring by means of a flexible or articulate connection means, or else the adjustment piston itself is of a flexible or articulate design.

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Frammersbach, Germany

Karl Staub