Abstract: A piston pump includes a cylinder with a bore receiving the piston. The piston forms a central passage leading to a variable volume chamber and a check valve is disposed in the central passage. In addition, the cylinder includes a pair of ports which selectively communicate with the variable volume chamber. The pair of ports and the central passage communicate a reservoir with the variable volume chamber.

Abstract: A master cylinder includes a housing (18) with a pair of pistons (60, 64) operable to pressurize a pair of pressure chambers (66, 72). One (64) of the pair of pistons includes means (76, 80) to control communication from a reservoir (34) to both pair of pressure chambers (66, 72).

Abstract: A braking apparatus (28) includes a housing (38). The housing (38) includes therein: a master cylinder section (40) for supplying pressurized fluid to the brakes (24) of an automotive vehicle (10) to effect a brake application, a hydraulic booster section (42) for assisting the master cylinder section (40) to effect a brake application, a fluid pumping section (44) driven by an electric motor, for supplying pressurized fluid to the hydraulic booster section (42), and a reservoir section (46) supplying a single fluid to the sections 40, 42, and 44. The electric motor driving the fluid pumping section (44) receives energy from the vehicle (10) only in response to a need for braking. The brake booster (28) includes a fluid pressure accumulator (147) providing pressurized fluid to the booster section (42) during a brake application. The accumulator (147) also provides for power-assisted braking in the event of a failure of the motor-driven pumping section (44).

Abstract: A disc brake includes a caliper slidably mounted on a fixed support through an axial column projecting from the fixed support. Rotation of the caliper about the axial column is prevented by the engagement of complimentary axial sliding surfaces on the caliper and on the fixed support. Upon axial movement of the caliper with respect to the fixed support in excess of a predetermined distance, the sliding surfaces may be disengaged, thereby permitting the caliper to swing about the column so that the friction elements may be replaced. Movement of the caliper with respect to the fixed support is normally kept to a distance less than the predetermined distance by a stop pin carried by the caliper.

Abstract: A power steering control valve comprises a pair of rotatable elements respectively attached to input and to output members for controlling fluid flow toward first and second actuator chambers. A disc-shaped chamber having two end walls and a circumferential wall is defined by structure attached to one of the rotatable members. The other rotatable element is a star-shaped rotor coaxial with and rotatably mounted in the disc-shaped chamber, and includes a hub from which extends a plurality of legs cooperating with the walls of the disc-shaped chamber so as to separate the latter into a plurality of pressure chambers which are circumferentially distributed. Two consecutive pressure chambers communicate respectively with the first and second actuator chambers via first and second work passages. Two consecutive legs respectively face an inlet passage opening and an outlet passage opening.

Abstract: A spot-type brake comprises a caliper movable during braking to engage a pair of friction elements with a rotor. The rotor comprises a first part and a second part. The first part is engageable with radially outer portions of the pair of friction elements and the second part is engageable with radially inner portions of the pair of friction elements. The rotor parts and the pair of friction elements are V-shaped with the rotor parts forming a spacing therebetween to receive a movable support which urges one of the pair of friction elements into engagement with the rotor and a fixed support opposing the one friction element.

Abstract: A disc brake includes a positioning device (40) which is pressure responsive to control the amount of retraction for a piston (22) within the disc brake. The positioning device includes a plug (44) movably and sealingly carried within the piston (22) and a pair of legs (48, 50). The plug (44) cooperates with the pair of legs (48, 50) to move the latter to a position in spaced relation to a caliper housing (12) when the pressure level within a pressure chamber (28) is above a predetermined value. A spring (52) cooperates with the plug (44) and the pair of legs (48, 50) to engage the latter with the caliper housing (12) when the fluid pressure within the pressure chamber (28) is below the predetermined value.

Abstract: A brake control mechanism (14) includes a housing (20) with a stepped bore (22). A valve member (44) cooperates with a seat (46) to close communication from a master cylinder (10) to a brake assembly (12) when a vehicle is going up a hill. An actuator assembly (78) is operatively coupled to a clutch assembly (16) and is comprised of a plate (50) to control operation of the valve assembly in response to actuation of the clutch assembly (16). The plate (50) includes a relatively small axial dimension and forms a central opening (54) for receiving the valve member (44).

Abstract: A master cylinder includes a sleeve (31) which defines fixed positions for a pair of seals (30, 32). A pair of pistons (36, 38) cooperate with the seals (30, 32) to form pressure chambers (40, 42) which communicate fluid pressure to brake circuits during braking. A bearing member (44) cooperates with one (36) of the pistons to define an auxiliary pressure chamber (50) and the bearing member (44) is provided with an additional passage (140) for communicating fluid into and out of the auxiliary pressure chamber as well as an end (46) directing movement of the one piston (36).

Abstract: A master cylinder includes a housing (22) with a bore (24) for receiving a pair of pistons (36, 38). The housing defines a reservoir (28) with an outer wall (26). The housing also defines at least one outlet passage (62, 66) communicating fluid from the bore (24) to a brake assembly (16). The outlet passage (62, 66) is partially defined by a boss (60) formed integrally with the housing (22) and the boss (60) cooperates substantially with the outer wall (26) to separate the reservoir (28) into a pair of cavities (84, 86).

Abstract: The invention relates to a drum brake in which the strut (32, 132, 232) is maintained at an approximately constant distance relative to the brake motor (20, 120, 220). The brake comprises a strut (32, 132, 232) disposed between two brake shoes (12, 112, 212; 14, 114, 214) and maintaining the brake shoes in spaced-apart relationship through a wear compensating device (38, 137, 138, 237, 238). The strut includes an inclined plane (60, 160, 260) cooperating, in proportion to wear of the friction elements (16, 116, 216; 18, 118, 218), with a projection (64, 164, 264) carried by one shoe, the inclined plane approximating an arc of a circle centered on the center of rotation of the associated shoe during wear of the associated friction elements. The invention may be applied to brakes for automotive vehicles.

Abstract: According to the invention, the system comprises a movable support holding the steering wheel and comprised of a four link articulated quadrilateral mechanism having a base link, two crank links, one link being adjustable longitudinally and the other link being slope adjustable and a rod link hinged to said crank links and supporting the steering wheel.

Abstract: The braking pressure corrector is controlled by the load of the vehicle by means of a controlling unit. This controlling unit (20) comprises a push rod (22), a preloading spring (26) exerting a thrust of fixed magnitude on the push rod (22), and a controlling spring (42) exerting on the push rod, through a reversing device (36), a traction of variable magnitude as an inverse function of the load of the vehicle. According to the invention, the reversing device (36) is mounted to pivot with respect to the casing (12,24) of the corrector by means of an articulation (38) of the swivel joint type.

Abstract: Device for automatically taking up play designed to be inserted between two consecutive portions of a mechanical control.The device includes two telescopic connecting parts (32, 34), which are movable in the axial sense within a fixed casing (22), and are respectively connected to consecutive portions (10, 12) of the control and releasable lock (66) which operate unidirectionally when the connecting parts move in the linear sense, characterized in that the lock comprises a component constituting a cam or eccentric (66) pivotally mounted on one of the connecting parts (32) so as to come into engagement with a surface (76) arranged opposite it on the other of the connecting parts (34) when the control is operated in an axial sense so as to provide, as a result of a wedging action, locking of the two connecting parts in the sense of linear movement.

Abstract: A disc brake assembly includes a caliper assembly and a torque member with matching recesses for receiving a pin assembly and the pin assembly includes as an assembled part thereof, a wire element carried by a resilient member to permit installation of the pin assembly into the recesses and yieldably prevent withdrawal thereof.

Abstract: The invention proposes a disc brake having a caliper (14) slidably mounted on a fixed support (10) by at least one axial column (16) slidingly received in an open bore (58) in the caliper (14). The brake is characterized in that the column (16) includes an axial abutment associated with the sleeve (40) in order to limit the axial displacements of the latter with respect to the caliper (14) when the stem (46) of the bolt (42) is unscrewed from the fixed support (10). The abutment (86) consists of a crown (70) of U-shaped cross-section the inner cylindrical sidewall (72) of which is mounted in the bore (43) inside the sleeve (40) and the flat annular end (76) of which is held tight between the end (52) of the sleeve and the fixed support (10) when the column (16) is fixed to the latter, the abutment surface (86) consisting of the extreme free edge of the outer cylindrical sidewall (74) of the crown (70).

Abstract: The invention concerns a sliding caliper disc brake.The brake comprises a caliper (14) which is mounted slidably on a fixed carrier (10) by at least one axial pin (16) cooperating with a bore (47) formed in the caliper. The bore (47) is provided with a sleeve (46) having a resilient projection (54) which extends radially into a recessed portion (58) of the pin (16) to act as a unidirectional stop which can resiliently assume an inoperative position upon assembly of the brake and thus to prevent the caliper and the fixed caliper becoming separated from each other when preforming operations such as changing the friction elements. In the construction illustrated, the sleeve (46) is made of resilient material and the projection (54) is integral with the sleeve.The invention is provided for braking motor vehicles.

Abstract: A brake booster is provided with a housing (30) having a bore (32) therein receiving a piston (52) carrying a valve assembly (68). An end plug (50) cooperates with the piston (52) to form a work chamber (66) and an input member (84) extends through the end plug to cooperate with the valve assembly (68). In the rest position, the work chamber (66) communicates with a reservoir (38) via passage 112, auxiliary chamber 104, passage 116, bore 32 and passage (40) independently of the piston (52).

Abstract: A master cylinder includes a housing defining a reservoir and a bore for movably receiving a pair of pistons. A primary piston cooperates with a secondary piston to define a primary chamber therebetween and cooperates with the housing to substantially define an auxiliary chamber. The primary chamber and auxiliary chamber are disposed within a substantially uniform diameter section of the housing bore. The primary piston is movable within the bore to communicate fluid pressure from the auxiliary chamber to the primary chamber until a predetermined pressure level is reached in the primary chamber whereupon the auxiliary chamber is vented to the reservoir. A sealing member disposed within a recess on the bore cooperates with the piston to define the auxiliary chamber. Upon initial movement of the piston relative to the sealing member, a small portion of the fluid within the auxiliary chamber is communicated to the reservoir so as to bleed the auxiliary chamber.

Abstract: A disc brake includes a caliper assembly (12) cooperating with a pair of friction elements ((14, 16) to brake a rotor (10). A pin assembly (30) supports the caliper assembly (12) and includes a bolt (34) defining an axial spacing for a sleeve (36) which engages the caliper assembly (12) via a resilient bushing (32). The sleeve is permitted to move axially through a clearance (62) with each brake application and a spring (38) biases the sleeve and caliper to always retract through the clearance upon termination of braking.