Abstract: For controlling the slip when braking a road vehicle and in particular for improving control in case of different friction values on the right and left vehicle sides the rotational behavior of the front wheels and, as a measure of the vehicular velocity and vehicular deceleration, the rotational behavior of the rear wheel running with a higher friction value are observed. The rotational behavior of the front wheels and the vehicular deceleration are evaluated in accordance with criteria manifesting the danger of yawing moments which are excessive with respect to the driving stability of the vehicle. Upon reaching a predetermined vehicular deceleration threshold value representative of high yawing moments, any further yawing moment increase is restricted by limiting the braking pressure or the braking pressure increase at the front wheel having a better road surface contact.

Abstract: A pneumatic check valve includes valve connections having a common axis of symmetry and a valve body at least partially guided in a droplet-shaped member disposed between the two connections to substantially eliminate flow and restriction losses occurring during operation.

Abstract: A brake system intended for automotive vehicles provided with a brake pressure transmitter (1) which is linked to the wheel brakes through pressure medium lines, and with sensors (19 to 22, 24) which are responsive to the brake pressure or to the behavior of rotation of the wheels and by means of which the braking effect at the wheels brakes is detectable. Furthermore, separating valves (SO.sub.1, SO.sub.2, SO.sub.3, SO.sub.4, SO.sub.HA ) for shutting off the flow of pressure medium in one switching position are incorporated in the pressure medium paths leading to the wheel brakes. A monitoring circuit (3', 25') to which the sensor signals are transmittable recognizes the failure of one wheel brake and thereupon automatically commutates the separating valve located in the pressure medium path leading to the wheel brake which has failed into a valve position locking the flow of pressure medium.

Abstract: A power striker pin mechanism utilizes a base plate having a horizontal guide slot in its front side surface and a vertical guide slot in its rear side surface. A striker pin carrying slider is slidably received in the horizontal slot and is formed with a cylindrical post portion which projects rearwardly of the slider through a clearance opening in the base plate and through the vertical slot at the rear side of the base plate. A circular cam is located in the vertical slot and formed with an eccentric bore which rotatively receives the post portion of the slider. The circular cam is mounted upon a guide member for rotation relative to the guide member about its center and the guide member in turn is mounted for movement vertically relative to the base plate within the vertical slot. A flexible cable fixed at one end to the cam is tensioned to apply a torque to the cam.

Abstract: A power drive for a sliding door includes a slider for guided sliding movement along a fixed path between first and second end limits of movement. The slider operably engages with a sliding door to impart motion from the slider to the sliding door when traveling in a first direction. A reversible power drive is provided for driving the slider along the fixed path between the first and second end limits of movement in first and second directions of travel. A latch release, coupling the slider to the sliding door, initially releases a latch mechanism and, after release of the latch mechanism, transfers motion from the slider to the sliding door when traveling in the second direction.

Abstract: An electric motor, especially an electric, small-power motor for driving wiper systems of motor vehicles, in which an electronics housing (50) is arranged beside a motor housing (10) by affixing the electronics housing to a central bulge (13) on the bottom (12) of the motor housing (10).

Abstract: To control the brake system of a two-channel anti-lock system, solely the rotational behavior of the front wheels (VR, VL) is measured and analyzed for generating a vehicle reference speed (V.sub.REF) and braking-pressure control signals. The quantities determining the braking pressure in the wheel brakes and/or in the brake circuits (I, II) are measured, and a wheel pressure pattern (RDM) is formed from these which, by approximation, represents the pressure variation in the wheel brakes. The wheel-pressure-pattern signals are utilized for dimensioning the valve control signals and for determining the variation of the vehicle reference speed (V.sub.REF).

Abstract: For controlling a traction slip control system with brake and motor management, motor regulating signals (m) are derived from electrical signals indicative of the brake pressure or which influence the brake pressure. Preferably, a brake pressure pattern (p[t]) is formed taking into account the pressure build-up and pressure decrease characterics of the wheel brakes or of the entire system as a basis for computing the motor regulating signals (m).

Abstract: In order to simply and economically fix to an internal-thread coupling (12) a pipeline (17) furnished with two slidable external-thread connections (15, 18), the invention contemplates fabricating the two external-thread connections (15, 18) together in the shape of one part only. At a predetermined screw-in torque, one external-thread connection (15) is torn off and as a result one pipeline end (16) is safely retained in the internal-thread coupling (12). The second external-thread connection (18) may be slid to the second end (21) of the pipeline and can fix the latter to a further internal-thread connection. The fixing means and methods contemplated by the invention are automation compatible and, upon fixing, protect the pipeline from being detached from the coupling through faulty handling.

Abstract: A spot-type disc brake is disclosed including a brake carrier including a mounting section extending substantially in parallel to a brake disc, and two brake carrier arms protruding beyond the rim of the brake disc. A brake housing is disposed in axially displaceable manner on the brake carrier and accommodates an actuating means. The brake housing straddles the rim of the brake disc and two brake shoes wherein the brake shoes are supported and guided on the brake carrier. To permit a simple and low-cost manufacture, at least one guide member is fixed to the brake housing which for guiding the brake housing is mounted on guide sections of one of the brake shoes.

Abstract: A tandem master cylinder for hydraulic brake systems for automotive vehicles, with the brake systems comprising a brake pressure control means, in particular, an anti-locking control means. The tandem master cylinder has a push rod piston (7) and a floating piston (8), with each piston having a central valve. The valve closure member (13) of the central valve in the push rod piston (7) can be controlled both by a pin (16) directly or indirectly abutting the housing of the tandem master cylinder and by a pin (17) coupled to the floating piston.

Abstract: A re-usable wear indicator (14) detachably secured to the pad carrier plate (2), especially intended for a disc-type brake shoe (1), which is located at the same point as is a spring (8) precluding rattling from occurring. This measure enables a recess (4) in the brake pad (3), required for fixing the spring, to be used, at the same time, to accommodate the wear indicator (14). The fixation is with the aid of a snap or O-ring (20) secured in an annular groove (19) on an extension (17) of the wear indicator (14), which ring (20) undergrips the constricted first end (21) of a hollow clip (22).

Abstract: A switch for use on the steering column of a vehicle includes lever operated switch members controlling vehicle operating circuits. A switch lever is mounted in a housing attachable to the steering column of a vehicle for movement in one of two mutually separate planes and/or rotation about a longitudinal axis extending through the switch lever. Actuators are mounted in the housing and are independently responsive to one of the modes of movement of the switch lever for controlling a separate switch member mounted in the housing. Each switch member carries electric contacts which are selectively engaged by contacts carried by a driven member in the switch member as the switch member switches position in response to movement by the associated actuator to effect switching of the connections for a particular vehicle operating circuit.

Abstract: A tandem master cylinder (1) with central valves (12, 37) positioned in the secondary piston (15), separate from the latter at the end of the cylinder bore (2) and arranged with filter elements (27, 28, 48, 49) upstream of the central valves (12, 37) so as to protect the latter from dirt. In order to be able simultaneously to reduce the total overall axial length, hydraulic fluid flows radially through the filter elements (27, 49) which become effective in the event of a backflow of hydraulic fluid and said filter elements (27, 49) are positioned on the pedal side in respect of the second stop (14) of the secondary piston (15), respectively radially aside the closing spring (46) of the second central valve (37).

Abstract: This invention describes a windshield wiper system comprising a windshield wiper which may be linerarly driven to and fro by means of a driving member extending transversely to the longitudinal direction of the windshield wiper. The driving member is guided in a frame from which projects a carrier for the windshield wiper. In the emergence area of the carrier from the frame there is provided a hollow-cylindrical seal of elastic material, which seal is diametrically penetrated by the carrier. The carrier and the driving member are thus protected against weather influences, because in the seal there is sort of an air cushion. If required the seal can due to its shape without any problem serve as a real heating hose and/or as a discharge hose for condensation water.

Abstract: A brake system providing traction slip of the controlled driven wheels. The rotating pattern of the driven wheels is permanently monitored by sensors (S1, S3 and S2, S4, respectively). In the event that one of the driven wheels tends to spin, the system switches to the traction slip mode so that a drive M of two pumps (21, 26) is actuated and an ASR valve (80) reswitched causing the air pressure to be applied to the booster chamber of the servo system (3) and the master cylinder to be actuated independently of the pedal actuation. During the start-up phase of the pumps (21, 26) pressure fluid is passed from the master brake cylinder to the driven wheels enabling a fast and effective pressure build-up in the wheel brakes of the driven wheels to effectively prevent the wheels from spinning. The master cylinder (2) therefore provides the function of an accumulator.

Abstract: A tandem master cylinder in which the primary piston and the secondary piston are configured in the shape of plunger pistons which are captivated to each other in the longitudinal bore of the cylinder housing. A cylindrical bushing is provided in the housing longitudinal bore and accommodates sealing cups sealing off the two pistons. The two valves which control hydraulic fluid flow are actuatable independently of each other.

Abstract: An electrically adjustable shock absorber is disclosed which includes a piston-cylinder assembly with a shock absorbing device. An electrically adjustable cylindrical slide is arranged in a tubular extension which is attached to the piston and which affects the shock absorption device by closing off at least one fluid opening provided in the extension wall to the shock absorbing device.

Abstract: In order to shorten the overall axial length of a dual piston tandem master cylinder for hydraulic brake systems, the second piston thereof is anchored on the bottom of the longitudinal bore and the first piston is anchored on the second piston.

Abstract: An electrohydraulic pressure control means for use with an anti-locking control system is provided with an integral assembly comprising an electronic controller (1) and a hydraulic unit. The hydraulic unit includes of an element (18) for accommodating electromagnetic valves and a lid (13). The lid (13) encloses coils (5, 6) protruding beyond the valve-accommodating element. The controller (1) and the hydraulic unit are interconnected by a mounting, positioning and anchoring device (3) and by an electrical contact (4). The anchoring device (3) is located in the area of the valve-accommodating element (18). The electrical contact (4) is provided between the lid (13) and the electronic controller (1). The anchoring device (3) absorbs outer forces imparted to the controller (1). The contact (4) provides a shielded and safe electric contact. Moreover, a valve block assembly for use with an anti-locking control system is provided.