Valeo Corporation

Fr&eacute;d&eacute;ric Rey

Pasquale Angione

Gino Villata

Sandro Bonardo

A device wherein the cylinder ( ) comprises a cylinder body ( ) wherein a piston ( ) slides, and comprising an intermediate element ( ) housed in the cylinder body rear part ( ), for axial positioning of at least an inner sealing joint ( ) co-operating with the side wall ( ) of the piston ( ), and which is axially maintained in the rear part ( ) by a cylindrical annular rear sleeve ( ) mounted in the rear part ( ) and sealingly fixed therein by bonding or welding, in particular ultrasonic welding. The intermediate element ( ) is a tubular element forming joint-holder(s) ( ) in the inner peripheral wall ( ) of which is formed at least an inner joint housing ( ) open radially inwards towards the side wall ( ) of the piston ( ).

Hydraulic control device for motor vehicle clutch

The invention concerns an arrangement (,) for fixing a tubular shift cylinder (,), between two mounting and locking positions in a motor vehicle body, comprising means for blocking the cylinder (,) in axial translation including, from the front rearwards, a transverse surface of the cylinder (,), axial elastic means, a body wall (,), pierced with an orifice (,), and a transverse eye mounting (,) of the cylinder (,) passing through a cutout (,) of the orifice (,) and enabling to immobilise the cylinder (,) axially when a rotation of the cylinder (,) locks it by squeezing the wall (,) between the support surface, the axial elastic means and the eye mounting (,). The invention is characterised in that the means immobilising the body (,) in rotation comprise a ferrule (,) linked with the cylinder (,) whereof an axial pin (,) passes through the wall (,) orifice (,) to be urged to stop against the wall (,) when the body (,) is locked in rotation, and whereof the axial teeth (,) bite into the wall (,) when the cylinder rotates (,) to immobilise it.

Arrangement for fixing a tubular element on a structural element of a motor vehicle body

The invention concerns a device comprising a shift cylinder with a cylinder body (,) bearing a first sleeve (,) for guiding a second sleeve (,) enclosing an axially mobile piston (,) with an intervening piston seal between the second sleeve (,) and the piston (,) and a secondary seal (,) between the body (,) and the second sleeve (,) penetrating into the hydraulic chamber. The invention is applicable to motor vehicles.

Growing community of inventors

Paris, France

Frédéric Rey

Growing community of inventors

Paris, France

Fr&eacute;d&eacute;ric Rey

Frédéric Rey