Abstract: An electromagnetic transducer intended to measure two-dimensional velocity components of a flow of an electrically conductive fluid. An electromagnetic transducer intended to measure the two-dimensional velocity components of a flow of an electrically conductive fluid, including a cylindrical metal tube forming a core with high magnetic permeability, which tube extends along a central axis (Z), including a central portion and two end portions, on either side of the central portion, each including two bosses, diametrically opposed to one another relative to the central axis (Z) and each delimiting a flat surface, parallel to the central axis (Z); an electrical coil, called primary coil, wound around the central portion of the tube; four electrical coils, called receiver coils, each wound around one of the flat surfaces, or four Hall effect sensors, each arranged on one of the flat surfaces.

Abstract: A hydraulic receiver for clutch control having a fixed part including an internal guide tube and a concentric external body defining a blind annular cavity supplied with fluid. A piston carrying a drive element for engaging a declutching device is mounted inside the blind annular cavity.

Abstract: A receiver comprises an external body (5) having a thrust face (166) and a centring surface (167), and a concentric internal tube (6) with a flange (61) in contact with the thrust face (166), the centring surface (167) being part of a portion (153) of increased thickness which has a shoulder (195) formed by deformation so as to trap and grip, between the latter and the thrust face (166), an intermediate member (95) and the outer periphery of the flange (61).

Abstract: Hydraulic clutch control, having a clutch release fork (25), a control member (8) capable of acting in traction on the clutch release fork (25), a hydraulic receiver (1) having a fixed cylinder (2) mounted on a counter-support (5) and a piston (4) engaged so as to slide sealingly in the cylinder (2) and defining therein a chamber (6). The control member (8) enters inside the piston (4) of tubular shape like the cylinder (2). This member is mounted in an articulated manner on the fork (25) and on the back end of the piston.

Abstract: The fluid-pressure ram, for controlling a clutch release bearing for an automobile clutch, has two variable-volume control chambers which follow each other axially and comprise a primary chamber which is fed with pressurized fluid and which is axially delimited sealingly, to the front by a fixed base and to the rear by a movable wall integral with a shell, and a secondary chamber which is axially delimited sealingly, to the front by the movable wall and to the rear by the piston, the movements of the fluidtight movable wall bringing about a decantation of a fluid contained in an intermediate chamber to the secondary chamber, and vice versa, the said shell separating the intermediate chamber from the secondary chamber.