Zf Friedrichshafen Ag

Zf Sachs Ag

Alfred Memmel

Alfred Wirth

Thomas Nowotka

Steffen Heyn

Matthias Planitzer

Harald Friedrich

Robert Moller

Georg Memmel

Horst Drescher

Jürgen Lindenthal

Andreas Sieber

Christine Markert-Hess

Achim Thomä

An air spring for a motor vehicle having a rolling bellows filled with gas under pressure, one end of the rolling bellows is connected to a load receiver and the other end is fastened to a roll-off piston'. The load receiver and the roll-off piston are moveable relative to one another depending on a force impinging on the load receiver toward the roll-off piston. A sensor device is arranged inside the rolling bellows by which a distance between the load receiver and the roll-off piston is detected. A pressure piece extending in direction of the roll-off piston is arranged at the load receiver and a sensor body is movably drivable along a sensor track of the sensor device by an end region of the pressure piece facing the roll-off piston. The sensor device generates an electric signal corresponding to the position of the sensor body on the sensor track.

Air spring for a motor vehicle

A sensor holder for a piston-cylinder unit with a cylinder and a piston rod which is movable relative to the latter comprises a holding element which carries out a synchronous movement with respect to the piston rod and has a first position measuring device. A second position measuring device is held by a holder so as to be axially stationary with respect to the cylinder, and there is a rotationally oriented installation position between the first position measuring device and second position measuring device. The cylinder-side holder and the holding element are rotatable relative to one another, and a magnetic force acting between the holder and the holding element brings about a rotational orientation of the two position measuring devices relative to one another.

Sensor holder for a piston cylinder unit

Damping valve comprising a damping valve body with at least one flow-through channel, the outlet of which is covered at least by an elastic valve disk, which is pretensioned against the damping valve body at least indirectly by a spring, where at least one support disk of smaller diameter is provided on the elastic valve disk, facing the spring, this support disk not executing any elastic movement, the spring exerting its force in the area radially outside the support disk.

Damping valve for a shock absorber

Growing community of inventors

Schonungen, Germany

Alfred Memmel