Robert Boschgmbh

Dietmar Wannke

Dirk Schmid

Dieter Karr

Peter Rapps

Waldemar Ernst

Martin Noll

Meike Fehse

Harald Bochmann

Andreas Vahle

An ultrasonic transducer having a pot-like casing has an outer bottom face which is designed in part as a vibrating diaphragm. A stabilizing ring is arranged on the outside of the wall of the pot-like casing, imparting a greater rigidity to the casing and limiting the ultrasonic vibration essentially to the bottom of the pot as a vibrating diaphragm. The propagation and reception beams of the ultrasonic waves can be shaped further by an additional arrangement of a sound directing device in the area of the vibrating diaphragm.

Ultrasonic transducer

An optical storage medium and a reading device are proposed, wherein the optical storage medium has the format of a credit card.

Plate-like optical storage medium and reading device

A navigation system is proposed which stores data concerning the motion states of the motor vehicle. The navigation system is usable as a trip recorder, in particular as an accident data recorder.

Route guidance system

Growing community of inventors

Reutlingen, Germany

Dietmar Wannke