The pneumatic spring system (1) comprises a body and a bogie, which is serving as chassis. A pneumatic spring with air volume in a pressure chamber (2) is formed in a bellows (5), which is arranged between a pneumatic spring cover (3) and a chassis-side ri...

The air spring assembly has an air spring (1) which comprises a rolling bellows (2), a piston and a lid (4) with a base (7) and a fastening medium. A mounting bracket (10) is provided with a contour (12) at a leg (11) associated with the lid. The contour i...

The electrical power supply for a rolling-lobe type air spring (2), has at least one piezo electric element (12) to apply electrical energy to the outer surface of the rolling piston (8), at the rolling zone of the roll bellows (4) near the bellows fold (4...

The pneumatic spring (2) has two distance-variable end elements (4,8), a cover plate (4) and an unrolling piston (8) and an ultrasonic measurement arrangement consisting of a transmitter/receiver (14) and a reflector (28) for contactless determination of t...

The motor vehicle air suspension system consists of a compressor, at least one air spring with level regulating device and at least one damper. The at least one damper is an air damper connected to the compressor via a pressure transmitter (7). A variable ...

Spring device comprises two coaxially arranged spring elements (4a, 4b), each having a rolling bellows (6a, 6b) and an unrolling piston (8a, 8b). The two pistons are rigidly connected to each other and form a double-unrolling piston. The two spring element...

The method involves providing an ultrasonic pulse measuring arrangement with a transmitter circuit, a transducer mounted on the cover plate, a reflector mounted in the air spring and a target reflector on the roll off piston. The difference in impedances o...

On the cover plate (8) of a roll bellows (4) is mounted an ultrasonic transmitter/receiver (14). A stop buffer (28) mounted on the piston (10) forms a two step reflector. The first step (16) acts as the target reflector and the second, the reference reflec...