Abstract: A pressure-medium cylinder does not have a component that dynamically seals the piston rod and can be well-cleaned safely from outside. The pressure-medium cylinder includes a cylinder housing, a piston, a piston rod, and a static end-position seal. The piston is axially movably disposed in the cylinder housing. The piston rod is connected to the piston and penetrates the cylinder housing toward an end face through an outlet opening. The piston rod has a stop surface extending radially from the piston rod in a piston rod portion disposed outside of the cylinder housing. The stop surface contacts the cylinder housing in an end position during retracting of the piston rod and thus sealingly covers and/or extends around a gap region or gap regions between the piston rod and an edge of the outlet opening.

Abstract: For connecting high pressures and flows, a safety valve includes a first main stage which, in a rest position, connects a fluid outlet to a first relief outlet and, in a switched position, connects a fluid inlet to a fluid connection for a second main stage. The second main stage, in a rest position, connects the fluid outlet to a second relief outlet and, in a switched position, connects the fluid connection to a fluid outlet. Both main stages are configured as seat valves having multipart tappets and, when the first main stage is connected, a first tappet part that is actuated counter to a spring load, in a first movement portion, initially sealingly abuts a second tappet part, as a result of which a relief passage to the first relief outlet is closed.

Abstract: A pressure-medium cylinder does not have a component that dynamically seals the piston rod and can be well-cleaned safely from outside. The pressure-medium cylinder includes a cylinder housing, a piston, a piston rod, and a static end-position seal. The piston is axially movably disposed in the cylinder housing. The piston rod is connected to the piston and penetrates the cylinder housing toward an end face through an outlet opening. The piston rod has a stop surface extending radially from the piston rod in a piston rod portion disposed outside of the cylinder housing. The stop surface contacts the cylinder housing in an end position during retracting of the piston rod and thus sealingly covers and/or extends around a gap region or gap regions between the piston rod and an edge of the outlet opening.

Abstract: It is shown a locking arrangement at a portable device such as a telephone terminal. The device comprises a main body and a movable protruding member such as a flip-lid. The protruding member is switchable between at least a first position and a second position with respect to the main body. The locking arrangement comprises a plunger unit and a lock and release unit with a fixed part and a resilient part. The resilient part is resilient along at least one direction of resilience (X) away from the fixed part. The plunger unit is switchable, along a direction of insertion and retraction, between a disengaged position and an engaged position between the fixed part and the resilient part.