Abstract: A hydraulic brake system for a vehicle having a traction control system, in which at least one self-aspirating pump, pressure fluid can be aspirated through an intake line and a charging valve and can be fed into a brake line leading to at least one wheel brake. A pressure limiting valve that diverts pressure fluid from the brake line to the intake line is also provided. To speed up the braking intervention, the pump is briefly turned on and the charging valve is opened when the vehicle is started, to carry away any gas bubbles that might be located between the charging valve and the pump. This averts the possibility that the compression of gas bubbles that might be present at the onset of traction control could cause the pump to pump less pressure fluid. The method can be employed in hydraulic brake systems of motor vehicles with traction control systems.

Abstract: An electromagnetically operable valve having a fuel inlet connecting piece which is surrounded by a magnet coil and is used as a core, at least a part of the valve is surrounded by a plastic sheath on which an electrical connecting plug is integrally formed. In the novel valve, the electrical connecting plug is injection molded at the same time as the extrusion coating of the magnet coil and thus forms an independent plastic injection molding. Only one valve extrusion coating tool is now required for different embodiments of the electrical connecting plug, resulting in greater flexibility in the assembly line. The valve is used as an injection valve for fuel injection systems.

Abstract: This invention is directed to continuous polyester filaments in tufted form for composing quality carpets having a pleasing appearance. The carpets are formed by use of continuous polyester filaments comprising polyethylene terephthalate resin having at least 85 mol % of ethylene terephthalate. The filament is completed by being placed in a curling stuffing box and applying a flow of heated air.

Abstract: A hydraulic dual-circuit brake system, with an anti-skid system (ABS) and traction control (ASR) for motor vehicles having a four-channel hydraulic unit with control valves, a return pump with two separate pump elements for each brake circuit, and two low-pressure reservoirs connected to the inlets of the pump elements. For supplying brake pressure in the traction control mode, at least one brake fluid reservoir is provided, which communicates with a pump element assigned to a brake circuit having at least one driven wheel, and a reversing valve is disposed in each connecting line between the master brake cylinder and the outlet of such a pump element.

Abstract: A valve block assembly and an electronic control unit are separably joined to one another by means of a contact pin and contact sheath connection. The contact sheaths are disposed in a caplike insulating housing part of the valve block assembly. The contact sheaths are connected by flexible leads to connection contacts of the valves of the valve block assembly. This equalizes tolerances between the valves and the contact sheaths, on the one hand, and on the other thermally shields the control unit. The contact pins, anchored in the control unit, are connected to a stamped grid embedded in the control unit housing to the lead segments of which grid electronic components of the control unit are connected. These components are located on a ceramic support plate, which is joined to a heat conduction plate by adhesive bonding. The interior of the control unit housing is closed off by an outer wall serving as a protective covering.

Abstract: A fuel injection valve including a pan-shaped protective cap having a radially outwardly extending recess which, together with the fuel injection valve, forms a gap which is so narrow that it exerts a capillary effect on the fuel so that, when the internal combustion engine is shut down, the high boiling point constituents of the fuel are deposited at the radial outer edge of the gap, because of the capillary effect, and the injection openings remain free from deposits. The protective cap of the invention has at least three protrusions formed from its bottom and protruding in the direction of the fuel injection valve to a predetermined axial distance, the protrusions of the protective cap being in contact with the orifice plate of the fuel injection valve, forming an axial gap in a simple manner between the bottom and the orifice plate. The protective cap can be used with fuel injection valves of various types.

Abstract: A leveling system for vehicles has one pressure regulating valve for controlling each work cylinder disposed between the vehicle body and a wheel support, the work cylinder having a hydraulically controlled main valve and an electromagnetically controlled pilot valve. To avoid uncontrolled motion of the vehicle body upon start-up, the pilot valve has a valve piston controlled by an electromagnet and acted upon in the valve closing direction by pressure in the control chamber of the main valve, which chamber communicates with a fluid source via a throttle, and in the valve opening direction by the pressure in the work cylinder. The valve piston has a valve seat, cooperating with a fixed valve member. The valve inlet of the pilot valve communicates with the control chamber, and its valve outlet communicates with a fluid tank. The main valve has three valve positions.

Abstract: A display card holder fixable to an underside metal surface of a shelf. It comprises a sheet of transparent plastic material, folded in flat segments in order to present the card to be displayed at an angle. The segment to be attached to the underside metal surface of the shelf has a magnet in the form of a strip adhesively fixed thereto.

Abstract: A rotary position transducer for generating electrical rotary angle signals as a function of the pivoted position of a rotary device, in particular a throttle valve in the fuel supply system of an internal combustion engine, has a first carrier with concentrically disposed electric contact tracks and a second carrier with fixedly disposed wipers, which rest with axial pressure on the contact tracks. One of the two carriers is rotatable relative to the other, and the rotatable carrier has a securing element for coupling of the rotary device in a manner fixed against relative rotation. To suppress a transmission of radial and axial play of the rotary device to the arrangement of wipers and contact tracks, the securing element is joined to the carrier via a spring coupling that is torsionally rigid in the rotational direction but highly elastic in the axial and radial direction.

Abstract: A measuring element for a device for determining the mass of a flowing medium. The measuring element has a plurality of resistor tracks exposed to the flowing medium, and a substrate carrying the resistor tracks, on the surface of which substrate the resistor tracks are disposed, separated from one another. To prevent alteration of the characteristic curve of the measuring element as a consequence of the provision of temperature decoupling slits in the substrate, transversely to the flow direction, the resistor tracks are disposed in succession, as viewed in the flow direction, in stairstep fashion with steps that protrude past the respective preceding resistor track. The substrate is notched in accordance with the stairstep shape of the resistor tracks, in such a manner that one leading edge is formed along each step of the resistor tracks, so that the oncoming flow to the various resistor tracks is unaffected by the preceding step.

Abstract: An injection nozzle for internal combustion engines has an electrical needle motion sensor, having a cable leading to an evaluation device. To dispose the terminals of the contact lugs of the needle motion sensor and the contact ends of the individual wires of the cable in such a way that they are shake-proof, relieved of tensile strain and protected against splashing water, they are encapsulated in a two-piece insulating shaped part, which is fixed in a recess of the holder body of the injection nozzle. The soldered terminals rest on support bases of pockets in the inner insulating shaped part, and the adjoining parts of the individual wires are bent back and guided in a U around retaining protrusions. The insulating shaped parts and the sheathed cable are fixed by a cover strip or by pins. The preferred field of application is injection nozzles for Diesel engines.

Abstract: A flat knitting machine provided with at least a pair of needle beds, either or both of the needle beds arranged for movement lengthwisely thereof. Two tubular knit fabrics being coupled each other at both ends, are provided in linear symmetrical relationship about a boundary line of adjointed ends. Two loops at the joint portion of each tubular fabrics are jointed, overlapping the new loop on the first overlapped loop. The method incorporates by repeating a predetermined number of times of a process of binding off the new loops, the cast-on of each tubular knit fabric is controlled so that the seams. Of the two tubular knit fabrics can be knitted in the same course.

Abstract: An apparatus for injecting a fuel-air mixture for multi-cylinder internal combustion engines having an electromagnetically actuated fuel injection valve with a valve seat and valve member, and a distributor with an air feed and a number of distributor bores, corresponding to the number of engine cylinders, and communicating with the air feed. In order for there to be only an extremely slight variation in quantity of the fuel metered to the various distributor bores during the valve opening, while having a simple structure of the fuel injection valve, the valve member is carried by a valve needle that is axially displaceably guided in a valve chamber preceding the valve seat by means of a guide segment, the fuel being delivered to the valve chamber in a region between the valve seat and the guide segment.

Abstract: A method of fabricating a semiconductor substrate is characterized in that a semiconductor wafer is disposed between a pair of opposite electrodes provided in an atmosphere of inert gas containing impurity gas which is held at a low pressure, a low-frequency alternating current is applied between the electrodes to induce plasma, and impurity ions are implanted into the surface of the semiconductor wafer to form a very shallow impurity diffusion layer.

Abstract: A light reflective body useful for a panel-type lighting or ornamental member with edge lighting is formed of a transparent inorganic or organic casted glass member, such as a transparent plate of polymethyl methacrylate which has foam layers unevenly dispersed in the inner or outer face of the member or plate. The organic casted glass member of the light reflective body is manufactured by (a) gelling organic glass beads and an organic glass monomer or prepolymer or a mixture of them and thereafter casting them with an organic glass monomer or prepolymer or a mixture of them in a framework; (b) spreading the foaming material on a ready-made organic glass plate and hardening it; or (c) tightly attaching an organic glass foam plate manufactured in advance to an organic glass plate. In accordance with the method (a) or (b), the foam layer is completely integral with the organic casted glass product. Method (c) can also be applied to an inorganic casted glass member.

Abstract: A fuel injection nozzle for internal combustion engines having a nozzle body secured on a nozzle holder, and a valve needle that is axially displaceable in the nozzle holder, the valve needle being raised from a valve seat for fuel injection by the fuel pressure, counter to a closing spring assembly of first and second helical compression springs disposed in series. The total stroke of the valve needle is divided into a prestroke and a remaining stroke. To attain an injection nozzle having the smallest possible outside diameter, the spring chamber receiving the closing springs comprises a blind bore of substantially constant diameter, on a bottom of which the first closing spring is supported. To support the second closing spring, a pressure shoulder part in the form of a ring is inserted into the blind bore; the pressure shoulder part is fixed by deformation of contacting parts of the wall of the nozzle holder.

Abstract: A method for switching a pressure control device in which the pressure control device is switched only whenever the pressure of the pressure fluid prevailing on the master brake cylinder side of the pressure control device exceeds a predetermined switching pressure of the pressure control device. In this way, the switching frequency and hence wearing of the pressure control device are greatly reduced. The magnet coil is designed or excited such that it heats to a lesser extent upon its excitation. The method is especially suitable for pressure control devices that are provided in a hydraulic brake system for motor vehicles having an anti-skid system.

Abstract: A hydraulic brake system having an anti-skid system in which its rear axle brake circuit has a pressure control device switchable by a control pressure; if the anti-skid system should fail, this device reduces the brake pressure in the rear wheel brake cylinders. The hydraulic brake system includes the pressure control device which acts as a proportional pressure regulating valve and is switchable by a pressure prevailing on a master brake cylinder side of a return pump; if the anti-skid system should fail, this device reduces the pressure of the pressure fluid in the wheel brake cylinders by a fixed proportion compared with the pressure toward the master brake cylinder. The pressure control device has a very simple, compact design and is especially suitable for use in the rear axle brake circuit of a motor vehicle.

Abstract: A known vehicle brake system having an anti-lock system has at least one return pump in this anti-lock system, by means of whose pumping pressure a throttle valve located between the master brake cylinder and the at least one wheel brake can be controlled via a control inlet, during an anti-lock mode, out of the normal position into a throttling position, counter to the force of an opening spring. The throttle valve serves to limit brake pressure rise speeds in the wheel brake during an anti-lock mode. It is disadvantageous that upon termination of such an anti-lock mode, the throttle valve hinders the return flow of pressure fluid out of the wheel brake to the master brake cylinder. Brake pressure reductions are therefore delayed. A throttle valve and connected in accordance with the invention has a second control inlet, which communicates with the wheel brake.

Abstract: An apparatus for damping courses of motion between two bodies in which a dynamic wheel load (C.sub.r) can be reduced by intervention in a damping element of a frequency-dependent increase in the passive spring rigidity of a spring element, in order to vary the dynamic wheel loads in the direction of a reduction. The apparatus is intended for use in on-road vehicles.