Robert Boschgmbh

Werner Rometsch

Georg Kehl

Martin Schneider

Martin Mayer

Hans Wurth

Karl Veil

Dittmar Kleemann

Uwe Kroger

Erhard Schenkemeyer

Lore Kochendorfer

Claus Kochendorfer

Jurgen Sollick

Wolfgang Herwig

Franz-Josef Meyer

Horst Willmer

Cranking arrangement with brake device

Starting device of compact construction

Starting device with drive shaft lock

Shaft stop bushing

A servo mechanism for adjusting the position of a biased control member of a sliding ring for controlling pressure fluid in a main conduit of a hydraulic machine, comprises a manually adjustable sleeve, a setting piston arranged for reciprocating movement in the sleeve and being hydraulically connected thereto to resume a position preset by the sleeve, a follower piston coupled between the setting piston and the biased control member of the recoiling device, a control pressure space provided above the follower piston, a unidirectional first control conduit delivering a regulating stream of pressure fluid from the main conduit to actuate the setting piston, a second control conduit between the main conduit and the pressure space, and a flow controlling valve controlled by pressure in the first control conduit for equalizing pressure between the pressure space and the main conduit thus allowing override of the setting piston during the pressure setting operation.

Setting device for a hydraulic machine

A pump has a rotatable rotor carrying a plurality of radially-extending pistons bearing at their outer ends on an annular adjustment ring which can be displaced radially in the pump housing by means of a pair of diametrically opposed adjustment cylinders that serve to displace this ring and adjust the stroke of the radial pistons in the rotor. One of the adjustment pistons is of larger diameter than the other and both of the adjustment pistons are spring-biased against the outer periphery of the adjustment ring and both have throughgoing bores so that pressure behind these adjustment pistons is fed to pressure-relief pockets at their inner ends against the adjustment ring. The small-diameter piston is provided in its through-going passage with a pressure-limiting valve which only allows pressure past to its respective pressure-relief pocket when pressure behind the smaller piston exceeds a predetermined minimum which is approximately a tenth of the maximum pump operating pressure. Thus during starting-up of the pump the pressure-relief pocket at the small piston is not pressurized to increase friction between the inner end of this piston and the adjustment ring so as to inhibit rotation of the adjustment ring around the rotor.

Adjustment mechanism for radial-piston pump

Growing community of inventors

Gerlingen, Germany

Werner Rometsch