Valeo Corporation

Automotive Products, Inc.

Automotive Products France, Sa

Andre Tobiasz

Richard A Nix

Remy Vo

Paul Platteaux

A master cylinder for a motor vehicle clutch is coupled to the clutch pedal by means of a fastening and articulating device comprising a ball which is mounted pivotally in a ball housing. The ball housing is in the form of a tulip, the base of which has a thrust seating surface configured as a hollow spherical bowl; the petals of the tulip consist of fingers deformable axially to enable the ball to be introduced into the housing along the general axis of the housing, so as to be resiliently gripped within the housing by the fingers.

Device for fixing and articulating a master cylinder on a motor vehicle

The invention concerns a fluid pressure ram having a fixed cylindrical control chamber defined radially by inner and outer partitions, in which one axial end of the chamber is closed off by a piston which has a cylindrical housing and in which, in the retracted position of the piston, the inner partition of the chamber is received in the housing. The piston, in the protruding position, is fully disengaged axially from the fixed chamber. Two cylindrical shells provided axially in line with the chamber are provided when the piston is in the retracted position. The shells are able to slide axially with respect to the piston and with respect to the chamber so as to define, in the protruding position of the piston, an intermediate annular chamber which axially extends the fixed chamber and which is closed axially by the piston.

Fluid pressure ram provided with a sliding intermediate chamber

Actuator with an overflow chamber and means for returning the fluid from

A sealed hydraulic coupling comprises two coupling elements, each of which has an outer body, a rigid sleeve, and one part of a deformable duct which is fitted and gripped between the outer body and sleeve of the coupling element associated with it. The interior of each sleeve communicates with the interior of the associated duct part. An obturator is associated with each sleeve, which is closed by a closure member. Each sleeve is rigid and has a fluid flow port in its side wall, the end of each sleeve being closed by an end plug. The obturator of each coupling element comprises a sealing element interposed between the outer body and the corresponding end plug. One of these end plugs is fixed and carries a seating for a movable sealing ring, while the other one is movable and carries a further sealing ring. The invention is especially suitable for use with hydraulic clutch control systems for motor vehicles.

Sealed hydraulic coupling

Hydraulic master cylinder and reservoir assembly

A vehicle brake pressure proportioning valve in which a stepped plunger in a stepped bore shuttles in first and second opposite directions when inlet hydraulic pressure from a master cylinder increases to a predetermined value. The aforesaid shuttling causes a ball valve, in which the ball is loaded by a spring, to close and open a bore through the plunger leading to an outlet to the brake so that during the shuttling the outlet brake pressure increases at a lower rate than the inlet pressure. Eventually the increasing inlet pressure attains another predetermined value sufficient to hold the ball valve closed against the spring loading so that the ball blocks the bore no matter which direction the plunger moves and thus the brake pressure cannot be increased any further.

Growing community of inventors

Epinay sur Seine, France

Andre Tobiasz