Patent ID: 6846048

Claim:
A pneumatic operating unit for compressed air brakes, comprising: a housing having at least one exterior compressed air connection device and at least one air-carrying connection; at least one piston; at least one piston rod; at least one valve body; at least one valve seat; a first cylinder body fitted into the housing, the first cylinder body having one of the at least one pistons and one of the at least one piston rods and at least one transverse connection on each side of the at least one piston connected by the at least one air-carrying connection to the at least one exterior compressed air connection device; a second cylinder body having one of the at least one valve seats and one of the at least one valve bodies and at least one transverse connection which is connected through the at least one air-carrying connection to the at least one exterior compressed air connection device; the cylinder bodies having a cover plate arranged on each exterior face of the cylinder bodies; and between the cylinder bodies, and between the cylinder bodies and the cover plates, the cylinder bodies are sealed off in a surrounding manner with respect to the housing, so that the transverse connections are sealed off with respect to one another and with respect to the environment, and spaces enclosed by the cylinder bodies and the cover plates are sealed off with respect to the environment.