Abstract: The present invention discloses a brake force booster for automotive vehicles having a control valve which is operable independently of an actuating rod displacing a valve piston, by way of an electromagnet which actuates a third sealing seat. Displacement of the sealing seat in opposition to the actuating direction of the brake force booster permits ventilating the working chamber. To eliminate all pneumatically induced force components in an independent activation, according to the present invention, a permanent pneumatic connection is provided between a pneumatic chamber delimited in the control housing by the valve member and the vacuum chamber, and in that both a second sealing seat which is provided on the valve piston and used to ventilate the working chamber, the third sealing seat, and the valve member in its sealing lip delimiting the pneumatic chamber in the control housing have almost identical diameters.

Abstract: A vacuum brake power booster for automotive vehicles has a booster housing with a movable wall and a control housing which carries the movable wall. The control housing includes a main part which is accommodated in a guide tube along with a cover part axially slipped onto the main part. A solenoid for actuating a control valve is positioned in the control housing, and one axial side of the solenoid is mounted in the main part and the other axial side thereof is mounted in the cover part. The cover part has axially projecting centering segments which elastically deform and center the main part in a clearance-free manner during the assembly of the control housing.

Abstract: In a vacuum brake power booster for automotive vehicles, including a stationary booster housing and a control housing which is axially slidable with respect to the booster housing, a sealing ring, arranged between the booster housing and the control housing, has a stop for an actuating piston. The actuating piston is axially slidably mounted on the control housing, and its purpose is actuation of a release switch to release an electromagnetic actuation of the vacuum brake power booster.

Abstract: A brake system for automotive vehicles has a pneumatic brake power booster with two chambers one of the chambers being adapted to be acted upon by a low pressure and the other one by a higher pressure, and at least one of the chambers being adapted to be connected to a pneumatic pump. A device is provided to activate and deactivate the pump in response to the pressure that prevails in the chamber of the brake power booster associated with the pump.

Abstract: A hydraulic automotive vehicle brake system with an actuating assembly that is attached to the splashboard of the automotive vehicle and is operable by the vehicle brake pedal. In order to reduce the possibility of risk to the driver during a collision (especially a rear end collision), the present invention provides a system which simulates an increase volume requirement of the brake system, thus permitting increased actuating travel of the actuating assembly.

Abstract: The present invention relates to a hydraulic brake system with slip control, including a brake line which connects a braking pressure generator to several wheel brakes, at least one pressure modulation valve associated with each wheel brake to control the hydraulic connection to the wheel brake, a pump which supplies stored pressure fluid to the wheel brakes by way of a pressure fluid collecting means connected to a suction line, and sensors to determine the rotational speed of the wheels and an evaluating circuit to control the wheel slip. The pressure fluid connection between the braking pressure generator and the wheel brakes is established by a brake line, to which the pump is connected, wherein a multi-way valve and a monitoring device including a pressure sensor is inserted into the brake line to sense the pressure prevailing at the pressure modulation valve of the wheel brake.

Abstract: A vacuum brake power booster for automotive vehicles includes a booster housing whose interior is subdivided into a vacuum chamber and a working chamber by a moveable wall. A control housing carries the moveable wall and accommodates a control valve which controls a pressure differential acting upon the moveable wall. The control valve has at least two sealing seats cooperating with an elastic valve member and is operable by an actuating rod. One of the sealing seats is operable, irrespective of the actuating rod, by an electromagnet whose armature is in force-transmitting interaction with one of the sealing seats. An electrical switching apparatus is also included, the control signals of which influence the current supply of the electromagnet thereby enabling its deactivation. The switching apparatus are operable by a relative movement between a valve piston and the control housing.

Abstract: A brake unit for automotive vehicles with electric drive is configured in the shape of a multiple-circuit compound system consisting of hydraulic friction brakes of brake circuits (I, I', I", III, III', III") and of an electroregenerative brake system (circuit II, II', II"). In a vehicle with a driven and a non-driven axle, three brake circuits exist, one brake circuit of which (I, I', I") is comprised of a pedal-actuated hydraulic brake pressure master unit (2) and of friction brakes (3, 4) acting upon the non-driven wheels. The second brake circuit (II, II', II") which represents an electroregenerative brake system is directly or indirectly coupled to the brake pedal and acts upon the driven wheels. The third brake circuit (III, III', III") which is comprised of friction brakes (10, 11) also acts upon the driven wheels. The actuation of the wheel brakes (10, 11) is connected to the second and third brake circuits.

Abstract: A vacuum brake power booster for automotive vehicles having control valve which is operable, irrespective of an actuating rod displacing a valve piston (9), by an electromagnet which actuates a third sealing seat thereby ventilating the working chamber. To minimize the independent actuating force generated by the electromagnet the electromagnet, of the present invention, is rigidly connected to the valve piston, and is arranged to be slidable in the control housing so that the third sealing seat is synchronously movable with the valve piston.

Abstract: An independent wheel brake unit for an automotive vehicle is furnished with a hydraulic wheel brake (12), a hydraulic pump (2), an accumulator (6) and electrically actuated valves (9, 10, 11) for controlling the brake pressure. The hydraulic pump generates the actuating pressure required for actuating the wheel brake (12) by receiving the kinetic energy of the vehicle through the vehicle wheel. Because the wheel brake unit supplies itself with energy, fuel is saved and the complexity of the electrical wiring system of the automotive vehicle is reduced. All essential components of the unit together with the steering knuckle (16) of the automotive vehicle can be pre-assembled and mounted on the vehicle, as a unit, preferably in an automatic manner, by a robot, thereby substantially reducing the final-assembly costs.

Abstract: A device for actuating the control valve (14) of a hydraulic power steering system for automotive vehicles, the rotary motion of a steering wheel being transmitted by means of a steering shaft (2) and the steering torque being transmitted by a relative rotation between the steering shaft (2) and a pinion shaft (4), and wherein the control valve (14) is a linear slide valve. A sleeve (6) embracing the steering shaft (2)and the pinion shaft (4) converts the relative rotation between the two shafts into an axial displacement axially and helically extending coulisse-type guides (7, 8), angularly disposed to one another, within which pins (9, 10), rigidly coupled to the steering shaft (2) and the pinion shaft (4), are received.

Abstract: The present invention relates to a pedal assembly (1), useful in automotive vehicles includes an accelerator pedal (6), a brake pedal (7) and a clutch pedal (8), each of the three pedals (6, 7 and 8) actuating an associated, electronically controlled device (potentiometer 9, 10; switch 11), the said pedal assembly (1) being pre-assembled and being connectible via electric connections with an energy supply unit (2) and a data bus (4).The present invention affords a pedal assembly (1) which lends itself to ease of mounting and manages without splashboard apertures in the pedal area. Further, this pedal assembly (1) satisfies the demands of modern industrial production such as modular type of construction or just-in-time supplies.

Abstract: Disclosed is a level regulator for automotive vehicles, including a hydraulically operating level adjusting device located on at least one axle of the automotive vehicle. A fluid separator provided in the level regulator includes a hydraulic cylinder having at least one inlet pressure chamber confined by a hydraulic piston and separated from at least one outlet pressure chamber capable of being connected to the level adjusting device. Pressure is applied to the hydraulic piston by a restoring force acting in opposition to the pressure in the inlet pressure chamber. The inlet pressure chamber, through switch valves is capable of being temporarily connected to a primary hydraulic pressure source such as that for the brake system of the vehicle and, normally, is capable of being connected to a hydraulic fluid return reservoir. The fluid separator includes an input cylindrical housing in which is disposed a first piston portion closing the inlet pressure chamber.

Abstract: A power steering device for parking for automotive vehicles has a left-turn switch (11) and a right-turn switch (12) which are associated with the steering column (13) which, in case of the steering wheel's (14) not being operated, adopt a first position and which, in case of a left or a right turn of the steering wheel (14), adopt a second position and act on associated left and right turning angle valves (17, 18) via an AND-gate (15, 16) associated with each. Upon actuation of the left-turn switch or of the right-turn switch (11, 12) a hydraulic pressure source is connected correspondingly to a hydraulic energy-generating device (34) assisting the steering system and acting on the steering linkage (37). The steering-column (13)-and-steering-wheel (14) arrangement consists of two parts (13, 14) twistable relative to each other in a limited manner upon a turn of the steering wheel (14).

Abstract: A dust cover for cylindrical elements, in particular for a pin guide arrange of a spot-type disc brake is described and includes an elastic folded sleeve having a first end section fixable at the circumference of a first cylindrical element provided in the brake housing and a second section mounted at the circumference of a second cylindrical element with a ring which is seated on the second cylindrical element. The ring has a substantially U-shaped configuration in longitudinal section and is firmly positioned on the second cylindrical element and partly surrounds the second end section of the folded sleeve. The second end section of the sleeve is turnable inside the ring.

Abstract: A disc brake for use in automotive vehicles is disclosed including a hydraulic brake actuating and a mechanical brake actuating device comprising a thrust member for axially operating a hydraulic piston in response to manual rotation of an actuating shaft in a bore in the brake housing. The shaft is axially retained in the bore by an eccentrically positioned recess in the shaft and projection on the bore extending over only a portion of the shaft circumference and bore. The recess defines radial boundaries for engaging the projection to prevent axial movement and the eccentric relationship causes axial movement of the thrust member for operation of the brake piston.

Abstract: A carrier member for replaceable friction linings for clutch-type disc brakes wherein the friction linings are guided and held radially relative to a brake disc by a positive engagement with grooves in an adjacent surface of the carrier member with the friction linings being supported in the circumferential direction relative to the disc by supporting elements connected to the carrier member. The supporting elements engage bores in the carrier member perpendicular to the adjacent surface and are held in their mounted position by a friction lining overlapping an edge of the adjacent supporting element.