Abstract: Braking device comprising a brake motor provided with a mechanically actuated device of the rotary type (a mechanism of the screw-and-nut type with reversible pitch) and a control jack of the "spring cylinder" type connected by a power transmission mechanism to this actuation device. According to the invention, the power transmission mechanism comprises a cam (50) keyed on the spindle of the actuation mechanism of the brake motor (10), and a cable (52) attached at one of its ends to the rod (38) of the control jack (30) and at its other end held wound round the cam, the profile of the latter being determined so as to compensate the weakening of the drive force generated by the spring of the jack during its relaxation. The invention is used especially in brake systems for heavy vehicles.

Abstract: The servomotor incorporates a component (50, 51) for retaining and positioning the plunger (12) forming the movable seat (11) for the valve mechanism (9) of the servomotor, the retaining component incorporating a cylindrical component (50) pivoting in the valve body (8) about an axis perpendicular to the direction of movement of the plunger (12), provided with a longitudinal groove (57) bounded by a first cam surface (58) cooperating with a shoulder (47) of the plunger (12) and a follower lever (51) outside the valve body (8) and incorporating a profiled edge (60) cooperating, on the return of the servomotor towards its rest position, with a ring (43) mounted in the neck (21) of the casing (1).

Abstract: The invention relates to a multi-disc brake comprising a stationary rotary disc (1) and a movable rotary disc (2) which is mounted on a splined sleeve (5) sliding on the hub (3) of axis (14) and with which the disc (1) is solid. An assembly of friction pads (6-9) can interact with the discs (1, 2) under the action of a hydraulic jack (13). To prevent any rattling at the start of each braking operation, elastic blocks (50) are inserted inside housings provided in the system of splines of the sleeve (5) and of the hub (3) and, when expanded, draw the flanks of the splines against one another in working contact during a braking operation.

Abstract: The disc brake incorporates a caliper (28) formed of two axially opposed beams (38, 40) and of two arms which are circumferentially spaced and which define a radial opening for the mounting/removal of friction components (56-62). The caliper incorporates a third arm (64) lying above the opening and mounted, so as to hinge about a shaft (68), on one (40) of the beams, members (66, 76, 78) being provided to join rigidly the third arm to the other (38) beam. An assembly is provided, for example an eccentric assembly, in the region of the shaft (68), to join the third arm to the caliper recovering the manufacturing tolerances of the brake.

Abstract: The servomotor, of the vacuum type, comprises a housing composed of two shells, each comprising a peripheral sleeve and a side end wall. The shells include a connecting web between the sleeve and the side wall, parabolic in profile, due to which the resultant of shearing and traction stresses is minimal, which allows the thickness of the shell material to be significantly reduced. Applications are braking systems with vacuum servomotor for motor vehicles.

Abstract: The invention relates to a locking element for a disc brake with a sliding caliper and a disc brake comprising such a locking element. The brake includes a caliper mounted in sliding relationship on a fixed support by two axial posts cooperating with bores formed in the caliper. The bores are provided with indentations allowing the introduction of the posts transversely and without dismounting the latter. One of the posts is provided with a locking bush maintained locked to the caliper by a locking element of which one portion passes through an orifice formed in the caliper and locking the bush and of which another portion in the shape of a U fixes the locking element relative to the caliper.

Abstract: The lining support plate (11) incoporates a widened lug part (16) which prolongs a neck part (15) round which is arranged the end loop (31) of the wire spring (30), of which the end of the strand portion (32) opposite the loop (32) has at least one transverse bent part (37) intended to be received in a central through-orifice (22) in the plate (11).

Abstract: The subject of the invention is a disc brake of the type with a caliper (1) mounted to slide on a fixed support (5, 30) by means of two pins (3, 4). The caliper incorporates a brake motor (9) which is capable of stressing an inner pad (8) directly and an outer pad (7) via the sliding caliper (1) to engage frictionally with a brake disc (2). According to the invention, the caliper (1) is located without appreciable play between a front stop (26) and a rear stop (27) placed respectively opposite a front end (24) and a rear end (25) of the caliper. Depending on the direction of rotation of the disc (2), one or the other of these stops (26, 27) fixed to the fixed support (5, 30) receives all or some of the forces generated by the pads (7, 8) and transmitted to the caliper (1) with which the pads (7, 8) interact.

Abstract: Method of crimping the locking ring of a ball joint. According to the invention, a prestress is applied to the bearing bush (17) to obtain a certain frictional torque between the latter and the spherical pivot while the locking ring (18) is placed on the bush (17); the punching tools (28) comprising a double die (30) are then actuated simultaneously in the direction of the socket (15) so as to deform the latter along two approximately circumferential and parallel zones located on both sides of the ring (18) to surround it without displacing it.

Abstract: A disc brake comprises a torque-supporting member (10) with which is associated an actuating mechanism (28) to stress at least one friction element (22) against a rotating disc (18), this element (22) comprising a lining-holding plate (38) on which a friction lining is mounted. The plate (38) interacts so as to be anchored and to slide with guide surfaces formed on the torque support (10), and an anti-noise spring (48) interacts with the friction element (22) and with the torque support (10). According to the invention, the lining-holding plate (38) has an assembly aperture (46) for the anit-noise spring (48) and this aperture has a bearing portion and a widened assembly portion which opens into the bearing portion and onto one edge of the lining-holding plate (38). The anti-noise spring (48) interacts with at least one part of the bearing portion so as to stress the friction element (22).

Abstract: The braking corrector according to the invention consists of two corrector valve seats (332, 332') and two inertia weights (328, 328') mounted in parallel in the same casing (312), and two magnets (336, 336') mounted on the same iron plate (340), the magnetic poles of the magnets being reversed so that the magnetic field (M) set up by the magnets (336, 336') is looped through the plate (340) on the one hand, and through the inertia weights (328, 328') on the other.

Abstract: A drum brake assembly includes a pair of brake shoes which are slidably mounted on a fixed support. An elastic retention member is mounted on each of the shoes before they are assembled onto the fixed support. Each of the retention members includes a locking portion which engages the web of the brake shoes, and a pair of arm portions which extend from the locking portions and which engage the web of the brake shoe in such a way as to releasably maintain the locking portion engaged with the web of the brake shoe. When the brake shoes are assembled on the torque member, a portion of the torque member is provided with a sloped edge that engages the locking portion to release the latter as the brake shoes are assembled onto the fixed support, so that the retaining member then exerts a biasing force between the torque member and the brake shoes.

Abstract: Brake motor with automatic adjustment, comprising a body (20) which incorporates a groove (62). A piston is mounted in this body and has a pivot (48) which guides the piston in the groove. A pawl (46) mounted at one end on the pivot (48) and applied elastically via a slope (64) against a portion (66) fixed relative to the body (20) stresses a toothed wheel (44) in terms of rotation when the relative axial movement between the body (20) and piston exceeds a predetermined value. The toothed wheel (44) integral with a nut causes the lengthening of a screw/nut system, thus ensuring automatic adjustment. The invention is used for braking motor vehicles.

Abstract: The braking system incorporates at least one brake disc (36) sliding on a rotating driving component (22) capable of being braked by way of friction components (44, 50). The sliding disc (36) is provided with a device for returning and memorizing a position (60) enabling the disc to be always at the same predetermined distance relative to one of the friction components (44) when the brake is not applied, irrespective of the state of wear of the friction component (44). Applicable to motor vehicle braking systems.

Abstract: The power-assistance servo-motor (8) supported on a first end (9) of the master cylinder (1) incorporates a moveable wall structure (13) connected to a valve body (20), located at the other axial end of the master cylinder, by two rigid conduits (26, 27) which extend radially on the outside of the pistons (4, 5) of the master cylinder (1) and which respectively make the valve (18) communicate with each of the chambers (13, 16) of the servo-motor (8), the conduits (26, 27) passing so as to slide in a leak-proof manner through the continuous rear wall (12) of the servo-motor (8).

Abstract: The invention concerns a solenoid valve with three ways and three positions, having a general construction with symmetry of revolution about an axis (1) and incorporating a magnetic armature (4) which is movable in translation along this axis under the action of an electromagnetic coil (3) and of a return spring (10). This armature is hollow and incorporates internally two valves (56a, 56b), movable relative to one another and relative to the armature (4), separated from one another by a spring (12) and provided with flanges (11a, 11b) by the intermediary of which they can be displaced by the movable armature (4), facing respective fixed seats (7a, 7b) which they are capable of closing. Each valve is pushed to the closed position by the intermediary of a spacer block (13) in point contact at the point (C) with the valve (56b).

Abstract: The device (10), mounted elastically for example on a projecting part (30) of the caliper adjacent a projecting part (8) of the fixed support (5), incorporates a flat leaf surface (15) intended to be interposed between the cooperating slide surfaces of the caliper (31) and the support (82) and formed at the end of an intermediate leaf zone forming a flexible ramp surface (14) which cooperates, when fitting the caliper into position, with the adjacent part (8) of the fixed support (5) so as to cause the flat surface (15) to deflect and thus ensure automatic locking of the caliper, the unlocking being easily achieved manually by a similar retraction of the flat slide surface (15). The device (10) is made in a single piece from a sheet of stainless spring steel.

Abstract: A disc brake of the type comprising a caliper (10) mounted to slide on a fixed support (12) by way of a pin (14) extending parallel to the axis (0) of the disc (16), the fixed support (12) comprising two arms (28, 30) extending radially towards the periphery of the disc (16), the latter defining when it rotates in the forward direction of rotation (AV), a front arm (28) and a rear arm (30) of the fixed support (12), a brake motor (32) acting directly on an inner friction element (40) and, as a result of reaction via the caliper (10), on an outer friction (42).

Abstract: A sliding key (10), interposed between the end (5) of an arm (4) of the fixed support (1) and the adjacent profiled end (60, 70) of the sliding caliper (8), is immobilized axially by a component (15), advantageously elastic, having end portions (16) cooperating in engagement with the axially opposed ends of the key (10) and joined by an intermediate portion (20) of undulating profile defining with the adjacent outside zone of the end (5) of the arm (4) a channel (24) for a wire conductor (25) to pass through, for connection to a pad wear detector, brought to the side of the brake opposite this pad.

Abstract: A disc brake comprises a stirrup (10) mounted to slide on a fixed support (12) by way of a column (14) extending parallel to the axis (0) of the disc, the column (14) fixed to the fixed support (12) and received so as to slide in a corresponding bore (20) of the stirrup (10), and a locking element (50) associated with the stirrup (10) and with the fixed support (12) to cooperate in guiding the axial movements of the stirrup (10) relative to the fixed support and to oppose rotation of the stirrup (10) about the column (14) when the stirrup is in normal operating position. The locking element (50) is a rod having a first end (52) articulated to the stirrup (10) and a second end (54) articulated to the fixed support (12). The two ends (52, 54) of the rod have joints (56, 64) which provide the articulated connections and which allow the rod to move in a plane (Pb) perpendicular to the plane of the rotating disc.