Robert Boschgmbh

Serge Aquino

Marc Noblet

Laurent Lhuillier

Olivier Bernadat

Marc Rodriguez

Julien Gateau

Chris Anderson

Christophe Duchossoy

Hervé Pujol

Thierry Fausten

Arnaud Duterne

Rui Ferreira

Christophe Thelliez

A master-cylinder seal housed in a groove around a piston has a core connected to three annular and concentric lips. The core rests against a side of the groove and has: a surface provided with an interior edge followed by a peripheral platter cut by at least one channel, and an exterior crown provided with a connection zone formed by an interruption in the crown and deformable due to pressure within the seal to recreate the crown's continuity and impermeability while facilitating purging the brake system when there is no pressure in the channel and the connection zone.

Brake system master-cylinder seal

Master-cylinder seal housed in a groove around a piston has a core connected to three annular and concentric lips. The core rests against a side of the groove and has: a surface provided with an interior edge followed by a peripheral platter cut by at least one channel, and an exterior crown provided with a connection zone formed by an interruption in the crown and deformable due to pressure within the seal to recreate the crown's continuity and impermeability while facilitating purging the brake system when there is no pressure in the channel and the connection zone.

A master cylinder with increased safety having a piston produced by molding a plastic or aluminum alloy. The piston slides in a bore blocked off by an end wall. A valve for the master cylinder bears at rest against a pin that is fixedly mounted in the body of the master cylinder passes through the piston via a longitudinal slot. The dimensions of the master cylinder are determined such that the piston bears against the pin before coming into contact with the end wall of the master cylinder body.

Master cylinder with increased safety and piston for such a master cylinder

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Rosny Sous Bois, France

Serge Aquino