Centre Technique Des Industries Mecaniques

Charles Favey

Claude Wartelle

Pierre Meurice

Jean-Pierre Lecerf

The transducer comprises a piezoelectric double-layer plate, the movements of which, under the effect of electrical signals, directly control the flow from one or two spray nozzles. The plate is mounted in a floating manner, without any fastening, between fixed supports of the knuckle-type which do not impede the free deformation (flexion or bending) of the plate. The invention makes it possible to increase the 'signal-voltage/movement' ratio of the plate and reduce the hysteresis to obtain greater accuracy and reliability of response.

Electrofluidic transducer of the nozzle/plate type and hydraulic

A ball and socket joint for use in mechanical linkages, especially for ball-ended connecting rods in a multi-cylinder hydraulic pump comprises a ball head forcibly inserted into a socket which extends over more than a hemisphere and which is formed as a cylindrical seating member. Radial slits around the mouth of the socket allow the necessary distortion and then the mouth of the socket is squeezed and held by a hoop or ring or counter-plates, and the seating member is inserted in a cylindrical recess in a further component.

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Gouvieux, France

Charles Favey