Wabco Fahrzeugbremsen Gmbh

Guenther Meise

Herbert Unger

Friedrich Gross

In a mixed medium brake system for a motor vehicle, there is provided a hydro-pneumatic brake cylinder device in a common housing having a compact configuration that is realized by designing the hydraulic piston in the form of a cylindrical plunger having a hollow cavity in the end adjacent the pneumatic piston, whereby engagement of the pneumatic piston push rod with the plunger is at a location thereof forward of the end adjacent the pneumatic piston, thus minimizing the distance required between the pneumatic piston and the hydraulic piston formed by the plunger. Such an arrangement also reduces the binding action of the cylindrical plunger in its guide bore for improved operation, while accommodating pivotal motion of said pneumatic piston.

Hydro-pneumatic brake cylinder device for motor vehicle brake systems

A compressor cylinder head cast as a single piece casting to include a cylinder bore portion and a cylinder head. The cylinder head is cast with respective recesses for accommodating an intake valve and a discharge valve, such intake and discharge valves being identical in form and shape and, therefore, being interchangeable so that, during assembly of the cylinder head, no particular attention need be given to which valve is placed in which recess.

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Hanover, Germany

Guenther Meise