Zf Friedrichshafen Ag

Herbert Kiebler

Georg Gierer

Karlheinz Mayr

Hubert Remmlinger

Willy Holdenried

Hubert Friedrich

The hydraulic control device for accommodating electromagnetic actuators and hydraulic valves, which is inserted in an automatic transmission for a motor vehicle, has at least one seal which is made of an aluminum support which has a thickness in the range of from 1 to 2 mm and is coated with a material at least on one side; the material, having a layer thickness in the range of from 100 to 180 &mgr;m, has a hardness in the range of from 20 to 120 Shore A and on its free surface is provided with a profiling having a depth in the range of from 20 to 50 &mgr;m.

Seal for intermediate sheet steel of a valve housing for an automatic transmission

The invention relates to a vibration damper for damping fluid vibrations in a hydraulic system, especially in a hydraulic control circuit for a motor vehicle gear box with an elastically deformable damper element ( ), According to the invention, the vibration damper is provided with a separate sealing element ( ) which guarantees the functioning of the hydraulic system in the event of a breakdown e.g. the damper element ( ) bursting.

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Tettnang, Germany

Herbert Kiebler