Abstract: The device incorporates an actuating piston (6) in tandem with a master cylinder piston (7) both defining first (8) and second (9) braking pressure chambers. A valve mechanism (34), in line with the control valve mechanism (12) of the device, is controlled by a mode selector piston (31) exposed to the actuating pressure coming from the source of fluid under pressure (25) so as normally to isolate the first chamber (8) of the braking circuit (I) joined to the working chamber (5). In the case of failure of the pressure source, the braking circuit (I) is joined to the primary chamber (8).

Abstract: Assembly component (56) for a disc brake of the type incorporating a calliper (10) sliding on a fixed support (16) by way of two axial pillars (12, 14) each incorporating, firstly, a cylindrical sleeve (42), and secondly, a removable portion (40) one end of which (48) incorporates a thread which is capable of fixing the pillar (12, 14) to the fixed support (16), and whose other end (52) is capable of being pushed in rotation by a suitable mounting tool. The assembly component (56) forms a channel with parallel sides, one side of which incorporates locking portions cooperating with each of the sleeves (42) and firmly fixing the assembly component (56) to the sleeves (42), whose other side carries tapped components (50) capable of cooperating with the removable portion (40), and whose central portion (76) straddles the fixed support (16).

Abstract: Device for mounting a protective cap (18) on a support (12), the support (12) having a base surface (20) intended to be at least partially protected by the cap (18), and a first bearing surface (28, 38, 54), the device incorporating a first rigid component (22, 32, 44), joined to the periphery of the cap (18), and a locking component (26, 40) situated between the first rigid component and the first bearing surface, characterized in that the locking component (26, 40) is inserted by sliding laterally between the first component (22, 32, 44) and the first bearing surface (28, 38, 54) so as to fix the cap (18) in position bearing against the base surface (20) of the support.

Abstract: Hydraulic assistance device incorporating a casing provided with a bore in which a first piston is mounted so as to slide, the piston being able to move under the effect of a brake pedal between a first position, isolating a first chamber which is joined to the brakes of the vehicle, from a source of high pressure fluid, and a second position, causing the first chamber to communicate with the high pressure source, the device also incorporating a second chamber formed in the casing, a passage joining the first and second chambers and a valve mechanism in the passage in such a way that the passage is normally closed, under the effect of the pressure in the second chamber, characterized in that the device incorporates a second passage, causing the second chamber to communicate with a low pressure reservoir, and a second valve mechanism in the passage, the valve mechanism being sensitive to the pressures in the first and second chambers in such a way that the passage normally remains closed during the operation o

Abstract: The invention concerns a pad and torque support assembly for a disc brake. The pad incorporates a first pair of twin surfaces (54) formed on the torque support (10) and a second pair of surfaces for anchoring and for sliding (56) radially offset from the first pair and cooperating with a second pair of twin surfaces (58) formed in the torque support, allowing a circumferential offset between two pads of the same brake.

Abstract: Disc brake of the type incorporating a caliper (10) sliding on a fixed support by way of at least one axial pin (14) lying parallel to the axis of the disc (16), a brake actuator (22) acting directly upon an inner friction component (28), and, by reaction through the caliper (10), upon an outer friction component (30), the friction components (28, 30) being tangentially offset each side of a radial plane (Pr) passing through the axis of the brake actuator (22), the inner friction component (28) being anchored on the fixed support, the outer friction component (30) being anchored on the caliper (10), the tangential offset of the friction components (28, 30) being such that during forward braking (B) the caliper is subjected to a tangential force (Ft) generated by the outer friction component (30).

Abstract: The lower part (11) of the chamber 8 of the geartrain (1, 3) has a profile substantially matching the peripheral outline of the lower gear, adjacent it, and forms a divider nose (12) connected flush to a discharge conduit (14) opening outwardly within an external container (16) the base of which communicates with the bottom part of the chamber (8) via an external conduit (22, 23, 25) including a restriction (26).

Abstract: Disc brake with automatic adjustment incorporating a calliper (10) mounted so as to slide on a fixed support by way of at least one axial pillar, a brake actuator (34) acting directly upon a first friction component, and by reaction through the calliper, upon a second friction component, the brake actuator (34) incorporating a mechanical control (48-50-60) acting upon a hydraulic control piston (36) through an automatic adjustment device (66), the adjustment device (66) being formed by a screw and nut system (68-70), which has a pitch which allows reverse action, and is capable of being actuated by the hydraulic piston (36) beyond a predetermined travel of the latter, the adjustment device (66) incorporating a sleeve (104) firmly fixed in rotation to the nut (70) and cooperating with annular control piston (80) which is capable of moving so as to be sealed relative to the screw (68) and relative to the brake actuator (34), the control piston (80) immobilizing the sleeve (104) in rotation and in translation wh

Abstract: Control device for a braking corrector (10) capable of being imposed between a source of hydraulic pressure and a motor vehicle braking circuit, of the type incorporating a casing (12) provided with at least one bore (14, 14') a plain or differential hydraulic piston (16, 16') sliding in the bore (14, 14') and defining in it a first pressure chamber (18, 18') and a second pressure chamber (22, 22') which are capable of being joined to the source of pressure and to the braking circuit, respectively, the piston (16, 16') controlling the flow of a fluid under pressure between the chambers, the control device incorporating a pilot piston (48) for fluid capable of generating a pilot force (Fp) upon the hydraulic piston (16, 16') so as to push the latter toward the inside of the casing (12) in the direction in which the flow of fluid is established, the fluid under pressure generating a reaction force (Fr) pushing the piston (16, 16') toward the outside of the casing (12) in the direction in which the flow of fluid

Abstract: The contactor incorporates, in a cavity (70), a fixed contact blade (20) and a movable contact blade (21) pushed elastically away from the fixed contact blade (20) in the opposite direction to the direction in which the follower (13) is pushed, the follower (13) being capable of cooperating in thrust with the piston mechanism (2) of the casing of the servomotor in which the contactor is mounted, the movable contact blade being coupled to a plunger (15) mounted so as to slide in the follower (13) and incorporating a shoulder (16) which is capable of cooperating with an abutment (18) of the follower. The cavity (70) isoldated hermetically from the outside, communicates freely and permanently with the rear working chamber (4) of the servomotor through passages (12).

Abstract: The spring (14), consisting of a metal sheet folded in the general shape of a V, incorporates a pair of main wings (15) bearing against an inside surface of the arch (7) of the sliding caliper (4) of the brake, joined by a central axial portion (16) bearing against the pads (2a, 2b), and at least one mounting wing (21), close to an axial end (18) of the spring, separated from the adjacent main wing (15) by a notch (20) and extended into an end portion forming a hook (22) engaged in an opening (25) in the arch (7) which is provided with a recessed shoulder (27) for retaining the hook (22), the axial end (18) of the spring (14), consisting advantageously of a finger folded back (24), bearing against an inside surface (11) of the inner portion (5) of the caliper which encloses a brake actuator (10).

Abstract: The invention concerns a braking corrector (10) of the type incorporating at least one piston (16, 16') provided with a passage joining the inlet chamber (18, 18') and the outlet chamber (22, 22') to one another, a valve (26, 26') controlling the communication through the passage, a control device (34) generating a pilot force which is capable of being applied to the piston (16, 16'), pushing the latter in the direction of opening of the valve (26, 26'); the invention provides the corrector (10) with a device (52) for monitoring the pilot force which is capable of limiting the latter when the reaction force generated by the pressure on the piston (16, 16') exceeds the pilot force by a predetermined amount.

Abstract: Hydraulic assistance device of the mixed hydrodynamic/hydrostatic type incorporating a body (10) in which a first piston (18) is slideably mounted and moveable between a first position allowing the communication of a first chamber (53), joined to a braking circuit, to a reservoir (12), and isolating this chamber (53) from a source of high pressure fluid (86), and a second position isolating the chamber (53) from the reservoir (12) and connecting it with the source (86); a second chamber (30) in the body (10) connected by a passage (90) to the brakes (66), and valve mechanism (92) normally closing the passage (90) and sensitive to the pressure in the chamber (30) so that, when the latter pressure reaches a value which is greater than that existing in the first chamber (53), the valve mechanism (92) opens allowing fluid to flow between the second chamber (30) and the brakes (66).

Abstract: The invention concerns a mechanism for actuating a disc brake, incorporating a piston (5) coupled to a brake pad (1), a wedge (12) which is moveable longitudinally, under the action of a control rod (10), between surfaces (5a, 17a) forming part of the piston (5) and of a reaction component (17), respectively, and a pair of rollers (13) situated on each side of the wedge (12) and able to roll between the surfaces (12a, 12b) of the latter and the surfaces of the piston (5) and of the reaction component (17). The space in which the wedge (12) and the rollers (13) move is confined in a closed hydraulic chamber (17). The control rod (10) actuating the wedge forms a penetrating piston which determines variations of volume in this chamber (7) producing a hydraulic thrust upon the piston (5). The corresponding displacement of the latter is slightly greater than that which the wedge (12) would communicate to it mechanically through the intermediary of the roller (13), for the same displacement of the control rod (10).

Abstract: Process for forming an hydraulic connection on a hollow body 10, for example a master cylinder, by fitting an interconnecting piece 24 onto a tubular protuberance 16 projecting outwards from the wall of the body 10. The protuberance has at least one thin-walled part which, when the interconnecting piece 24 has been fitted over the protuberance 16, is flanged outwards against an internal bearing surface 38 of the interconnecting piece 24.

Abstract: Braking corrector of the type incorporating a simple or differential piston provided with a passage joining together the inlet and outlet chambers, a valve controlling communication through the passage, a return spring joined to a component, which is movable as a function of the vehicle load, to return the piston to a rest position, and an abutment holding the valve open in this same position. The invention provides for the corrector (10) to be provided with an elastic device (40) for limiting the travel of the piston (16) towards its rest position, this device only coming into action after the valve (24) has lifted from its seat (26) and subsequently modulating the retraction of the piston as a function of the thrust which is transmitted to it by the return spring (36). Applicable to the braking systems of motor vehicles.

Abstract: The braking system incorporates at least one brake disc disc (26 36) mounted so as to slide axially on a hub (22) along key mechanisms (30, 32). According to the invention the braking system incorporates an integral device for forced greasing (60) of the key mechanisms (30, 32) formed by two sealed chambers with variable volumes joined to one another by way of the key mechanisms (30, 32).

Abstract: The inertial brake corrector comprises a body (1) closed by a cover (7), with a stepped piston (10) incorporating a tubular extension part (13) extending in a direction opposite the outlet chamber (20) and interacting on the inside by sliding in a leak-proof manner with a central projection of reduced diameter (14) of the cover (7), which extends in the body and which delimits, together with the tubular extension part of the piston, an inlet chamber (21) in which is located an inertial shut-off member (24), of which the retention and guide structure forming a slope (27") is advantageously fixed to the stepped piston (10).

Abstract: Disc brake having a caliper (18) mounted for sliding on a fixed support (10) by way of two axial pins (14, 16) passing through openings (20, 22) formed respectively in a rear arms (24) and in a front arm (26) of the fixed support (10). According to the invention, the caliper (18) has two openings (54, 56), the first opening (54) receiving the rear arm and the corresponding pins (14) and permitting the radial extraction of the friction elements (36, 38), and the second opening (56) receiving the front arm (26) and the corresponding pins (16).

Abstract: The disc brake incorporates a sliding caliper (18) straddling a rotating disc, the caliper incorporating a first portion (24) sliding on a fixed support (10) by way of at least one axial pillar (20) and incorporating a second portion (28) of the caliper astride the disc. The second portion (28) is hinged to the first portion (24) along an axis of articulation (D) parallel to the plane of the disc and situated radially nearer to the axis of rotation (B) of the disc than the line of action (C--C) of the brake actuator, an abutment (56-58) is positioned between the first (24) and the second (28) portions and lies in a plane perpendicular to the plane of the disc and parallel to the axis of articulation (D).