Institut Franco-allemand De Recherches De Saint-louis

Alkan

Jean-Jacques Derksema

Klaus Sterzelmeier

This device comprises an electromagnetic coil () in which there is able to slide a piston () which has at least a portion made of a material having paramagnetic susceptibility and which is placed in contact with the mechanical member when the drive device () is in the rest state. Electrical energy supply means are provided in order to store electrical energy and to abruptly release this energy into the coil and thus apply the high-energy magnetic movement pulse to the mechanical member. According to the invention, the piston () comprises a stack () of blocks () which are made alternately from the material having paramagnetic susceptibility and an insulating material; and the electrical energy supply means are provided in order to allow the energy to be applied to the coil in the form of a series of electrical pulses which appear as the piston () moves.

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Saint Quentin les Beaurepaire, France

Jean-Jacques Derksema