Hutchinson

Sylvain Durand

Jean-Luc Gastineau

Andr&eacute; Gennesseaux

Pascal Petit

Jean-Pierre Bretaudeau

Jean Lor

Gilles Sauvat

Jo&euml;l Menager

Herv&eacute; Visage

A controllable hydraulic vibration-damping support comprising two strength members interconnected by an elastomer body defining a working hydraulic chamber, an auxiliary hydraulic chamber communicating with the working chamber via a constricted passageway, a pneumatic chamber separated from the auxiliary chamber by a moving wall, an electrically controlled vent device for establishing a connection to the air, which device can be actuated electrically in order to put the pneumatic chamber into communication with the atmosphere, and a check valve allowing air to flow only out from the pneumatic chamber towards the atmosphere.

Controllable hydraulic vibration-damping support

Active hydraulic anti-vibration mount comprising two support elements connected by an elastomer body partially delimiting a working chamber filled with liquid, this working chamber communicating by a throttled passage with a compensation chamber separated from said working chamber by a rigid partition. The rigid partition is penetrated by a first regulating nozzle closed by a movable exciting device, and a second regulating nozzle closed by a valve the movements of which are limited to correspond to an amplitude of variation in the volume of the working chamber which is less than 20% of the amplitude of the variations in volume generated by the exciting device.

Method of damping vibration, active hydraulic anti-vibration mount and vehicle including such a mount

This anti-vibration mount, comprising a base and a head connected by an elastomer body, is intended to be interposed between two rigid elements to damp the vibrations between these two elements, on a central axis. This mount comprises a non-extensible limiting cable forming a loop, which is fixed to the base and to the head, this cable comprising a first part which is supported on the head by winding around it and which extends towards the base from the head, and a second part which runs along at least a first portion of the periphery of the base and winds around at least a first return element integral with the base, level with two joints between this second part and the first part of the cable, the cable being restrained by the return element.

Anti-vibration mount fitted with a non-extensible limiting cable

Electromagnetic actuator including a mobile magnetic member made up of stacked ferromagnetic plates and two fixed electromagnets for reciprocating the mobile magnetic member along a central axis. The ferromagnetic plates each have two opposite edges parallel to the central axis which are crimped to two rigid transverse strips. Elastomer bodies join each transverse strip to a fixed spacer.

Electromagnetic actuator

An anti-vibration support is provided having two rigid frames linked to one another by an elastomer body which is applied against a rigid partition to delimit a hydraulic working chamber connected to a compensating chamber by a throttled passage. The rigid partition has a flexible membrane inserted between the working chamber and a pneumatic chamber controlled by a solenoid. The solenoid is mounted on a support block which also incorporates a pneumatic coupling and an electrical connector, this support block having an annular flange which delimits the pneumatic chamber and clamps the flexible membrane against the rigid partition.

Pneumatically controlled, active hydraulic anti-vibration support

The hydraulic antivibration support has two rigid strength members interconnected by a bell-shaped elastomer body, a flexible elastomer wall connected to the second strength member, and a rigid partition secured to the second strength member and defining both a working chamber on its elastomer body side and a compensation chamber on its flexible wall side. These two chambers are filled with liquid and are connected to each other via a narrow channel, via a central nozzle fitted with an axially movable shutter, and via an annular flap disposed around the central nozzle between two grids. One of the grids is axially slidable and is connected to the shutter so as to block the flap when the shutter is open.

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Villorceau, France

Sylvain Durand