Abstract: A system for controlling the yaw rate of a vehicle is provided. The system includes a facility for measuring the yaw rate, the lateral acceleration and the reference velocity of the vehicle. The velocity of the side slip angle of the vehicle is determined according to the equation: ##EQU1## where .beta. is the velocity of the side slip angle, a.sub.trans is the lateral acceleration, .nu. is the reference velocity, .gamma. is the yaw rate, .nu. is the time derivative of the reference velocity, and .beta. is a side slip angle. The velocity of the side slip angle determining mechanism includes a mechanism for setting the value of the time derivative of the reference velocity to zero, and a mechanism for determining the side slip angle by integrating the velocity of the side slip angle.

Abstract: A cast element comprises an elongated cast body having an axial opening in a direction of its axis thereof, and first and second friction bearings at ends of the axial opening. The friction bearings are formed as a single piece with the cast body, and each friction bearing consists of several slide elements with a space between them. Each of the slide elements has a cross section shaped like a cylindrical ring segment, and the slide elements of the first bearing are circumferentially alternate with the slide elements of the second bearing.

Abstract: Method and circuit configuration for controlling the flow rate of an electromotively driven hydraulic pump which is activated by a variable pulse/pulse-break train for controlling the auxiliary pressure supply of a brake system including anti-lock control (ABS) and traction slip control by brake management (BASR). The generator voltage produced by the pump motor during times of pulse break is evaluated as a standard of the rotational speed of the pump. The nominal value of the pump speed is compared with the actual value of the pump speed in a control circuit, and the new correcting variable for the pump activation is derived from the difference.

Abstract: A set of brake pads for a floating-caliper disc brake including a first brake pad with a first retaining spring for clamping engagement on a brake piston and a second brake pad with a second retaining spring for clamping engagement on an axially external leg of the floating caliper. The first retaining spring has two resilient tongues which are locked in a bore of the hollow brake piston, and the second retaining spring has identical resilient tongues which are locked in a recess of the external housing leg. According to the present invention, the distances between the respectively opposed resilient tongues are different in conformity with the different widths of the bore and the recess, respectively. The provision according to the present invention renders it impossible to attach the first brake pad to the external housing leg and the second brake pad to the brake piston.

Abstract: An assembly for manufacturing a plastic piston using a first mold and a second mold, each mold having an axial recess, centering element, core element and contact face. The second mold is movable toward and away from the first mold and can be connected to the first mold using a transverse slide on the first mold and a holding apparatus.

Abstract: A process for controlling the driving stability of a vehicle is provided. To avoid complicated models for determining the desired value of a variable characteristic of the travel behavior, which variable usually must be calculated by an expensive calculation circuit, a controlled variable is selected, which directly describes the driving stability and is compared with an actual value, which can be calculated in a relatively simple manner. An advantageous embodiment describes comparing an actual value of the variable, which can be determined in a simple manner, with a desired value. The range of tolerance of the variable is set directly by the driving stability limits. Advantageous variants pertain to the suitable scheme of calculation and the selection of a suitable range of tolerance.

Abstract: The invention pertains to an electrohydraulic pressure control device, with electromagnetically actuated hydraulic valves, which are arranged on a valve-holding element, with coils which extend beyond the valve-holding element, whereby the coils are provided with electrical contact elements at their parts extending beyond the valve-holding element, with a cover which covers the extending coil parts and the contact element, with a support element to hold the coils, that are positioned within the cover, whereby the cover or a portion of the cover is designed as an electromagnetic controller or for holding the connecting parts of an electronic controller. An essentially plate-like carrier element facing the coils features several slots into which form- and/or pressure-locking closing devices are engaged projecting from the outer surface of the cover.

Abstract: A system for axially fixing a shaft, in its bearing casing in that the shaft portion surmounting the bearing casing is provided with an annular groove and in that a plastic material is injected around the annular groove.

Abstract: A system for testing the operability of hydraulic devices, in particular pumps, by way of a compressible medium, for example air. In addition, the testing method disclosed permits tracing other defects which may appear.

Abstract: Apparatus for improving the driving behavior of a vehicle is provided. The vehicle has front and rear axles, each having a plurality of wheels. Each wheel has a brake. Sensor are provided for measuring the rotational speed of each wheel, the vehicle yaw rate and the vehicle lateral acceleration. An anti-lock braking system provides first preset pressure values for controlling each brake, to prevent the wheels from locking during braking. A traction slip control system provides second preset pressure values for controlling each brake, to prevent the wheels from slipping during acceleration. A brake effort proportioning system provides third preset pressure values for distributing braking pressure between the wheels of the front axle and the wheels of the rear axle. A yawing moment controller provides fourth preset pressure values used to control each brake during cornering, to avoid application to the vehicle of an unbalanced moment which would cause the vehicle to understeer or oversteer.

Abstract: The present invention relates to a pressure control device including a homogeneous assembly of lid, frame and cover (1, 3, 4, 4') in which the carrier element (2) and the conducting paths (10) are injection-molded. Also, all apertures (6) and projections (8) or recesses can be made in one working operation during manufacture of the lid. Closure of the frame (3) is possible either by a cover (4) that is retained by foil hinges (15) on the frame (3) or by a separate cover (4') which is positively engaged on the frame of the lid (1) by locking hooks.

Abstract: A crank mechanism of a driving assembly of a screen wiper for use with an automotive vehicle preferrably a lever and a tongue in communication therewith through a swivel joint, with the tongue are eccentrically hinged to an actuated gear wheel, in particular, a worm gear wheel and with the lever is connected or connectible in a non-rotating way to a wiper shaft. The tongue and the lever, in the practice of the invention, are pivotally interconnected through a bajonet-type connection such that the crank mechanism can be connected without tools. The assembled position enabling tongue and lever to be joined together differs from any possible rotary position taken by these two elements during operation.

Abstract: A lighting device, in particular to a signalling lamp for a vehicle, which consists of a lamp housing and of a cover plate which is connected therewith and is translucent at least in some areas. The lighting device is mountable on a wall or the like, and a gap which forcibly results from design, which provides an unesthetic view to a beholder, and which is formed between the lighting device and an adjacent wall has to be covered in a decorative manner.

Abstract: A pressure control device for slip-controlled hydraulic brake systems includes a brake pressure transducer that cooperates with an auxiliary pressure system, a reservoir for supplying the brake pressure transducer and the auxiliary pressure system with the pressure medium, wherein the auxiliary pressure system is connected to a pressure modulator that includes several hydraulic valves and storage elements, and a control electronic for actuating the auxiliary pressure system. The auxiliary pressure system is formed by structurally combining an electric motor and an auxiliary pressure pump so as to attain a motor/pump unit that accommodates the pressure modulator.

Abstract: A hydraulic brake system with slip control, including a braking pressure generator hydraulically connected to at least one wheel brake by way of a main pressure line, a return line connected to the wheel brake and to the suction side of an auxiliary-pressure pump, an auxiliary-pressure line hydraulically connected to the braking pressure generator, and inlet and outlet valves inserted into the main pressure line and the return line and either closing or keeping open the pressure fluid passage in the main pressure line and in the return line, wherein a restrictor is controllable in the main pressure line between the inlet valve and the wheel brake permitting an unhindered hydraulic fluid passage in the main pressure line to the wheel brake in a first operating position, while the restrictor limits the pressure fluid flow to the wheel brake in another operating position.

Abstract: In order to ensure an optimal position of a magnet (3) in relation to a Hall IC (2) or, respectively, its Hall effect elements (4, 5), the magnet (3) and the Hall IC (2) are displaceable in relation to one another and, namely, in the direction of the lateral distance of the two Hall effect elements (4, 5). It is preferred that the Hall IC (2) is retained stationarily in the rotational speed sensor, and the magnet (3) is retained so as to be displaceable and lockable in position, in particular in a base member (10) of the sensor housing.

Abstract: A wiper arm for cleaning windshields of motor vehicles. The fixing portion of the wiper arm is formed from sheet metal in a manner which is economical and strong.

Abstract: An electrohydraulic pressure control device including a plurality of electromagnetically operable hydraulic valves (solenoid valves) which are arranged on a valve-accommodating member in a block-type manner, coils which project from the valve accommodating member. The coils including injection-molded cables on their parts projecting from the valve-accommodating member, a cover which covers the projecting coil parts and the cables, a carrier element to accommodate the coils which is arranged within the cover, with the carrier element including a plurality of openings into which a plurality of anchoring members fitted to the coils are form-locking engaged, and with the electric cables being relieved from tensile load.

Abstract: A drive bearing for a windscreen wiper system wherein two actuator rods for actuating two wiper arms are driven by a motor crank. The two bearings are concentrically nested one within the other thereby allowing the driving forces of the two rods to extend in one plane. Other features include the association of the individual bearing elements to the actuator elements, and the design of the bearing faces.

Abstract: To prevent a rolling diaphragm (13), which forms the movable wall (4) of a vacuum brake booster along with a metallic diaphragm disk (12), from becoming detached from an annular groove (52) accommodating a radially inner bead (32) of the rolling diaphragm (13), the rolling diaphragm is connected to the edge of the bead (32) located away from the (first) diaphragm disk (12). By connecting the rolling diaphragm (13) to the edge of the bead (32) located away from the (first) diaphragm disk (12), a pneumatic space (27) is defined by the rolling diaphragm (13) and the (first) diaphragm disk (12). Pressure occurring in the vacuum chamber(s) (28, 30) can be admitted to the pneumatic space (27).