Hutchinson

Pascal Sautier

Alain Bellamy

Gilles Argy

Gérard Tavin

Gabriel Lemaire

Patrice Levallard

Antivibration device comprising two frames and an elastomer body interconnecting said frames and delimiting a first hydraulic chamber linked to a second deformable hydraulic chamber via a throttle passage. A microturbine is rotatably mounted in the throttle passage and is coupled to a generator. The microturbine is configured to be always driven in the same rotational direction by the fluid when the fluid reciprocates along opposing first and second paths within the throttle passage.

Hydraulic anti-vibration device provided with an electricity generator device and electricity generator device for such an anti-vibration device

A damper having an external armature that is symmetric about a longitudinal axis, an internal armature that is arranged partially inside the external armature and a vibration absorber that in a damped manner couples the internal and external armatures together. The damper having &#x2022;an arm parallel to the longitudinal axis, fixed in the manner of a cantilever to one of the armatures and provided with a magnetic dipole; &#x2022;at least one 3D Hall-effect magnetic sensor, secured to the other armature and positioned facing the dipole parallel to the longitudinal axis and separated from the dipole by a determined gap; &#x2022;at least one temperature sensor positioned in thermal contact with the vibration absorber; &#x2022;at least one force sensor arranged in such a way as to generate data indicative of pressures or loads experienced by the vibration absorber; &#x2022;a transmitter of the data generated by the sensors; &#x2022;an electrical power supply.

Instrumented damper and performance monitoring system comprising such a damper

A method of fabricating a magnetic coder device, the method being of the type consisting in making a mixture of ferromagnetic particles or ferrites in a matrix, in molding the matrix, and in subjecting the molded matrix to a magnetic field so as to obtain a continuous alternation of north and south magnetic poles, which method consists in using a matrix having viscosity that is sufficiently low to enable the ferrites to migrate, in applying a magnetic field during the molding operation while maintaining the matrix at a given temperature in order to reduce its viscosity and thereby making it easier to cause the ferromagnetic particles to migrate and become oriented in their direction of easy magnetization, and to obtain discontinuous shapes having high particle concentration, and in suddenly cooling the matrix while the magnetic field is maintained so as to freeze the particles in the matrix.

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Paucourt, France

Pascal Sautier