Abstract: A method of manufacturing an electric motor for a windshield wiper of motor vehicles is described, in which magnets are held on the housing case by way of an adhesive connection. Thereby the magnet, together with the adhesive, is inserted into the housing case, before said housing case is coated with powder under heat supply. Thereby the heat supplied for coating the housing case with powder is simultaneously used for hardening the melting adhesive.

Abstract: The invention is based on an electric push button switch, especially a hazard-warning-signal switch for motor vehicles. This switch comprises a socket with stationary contacts, a cap-like linearly actuable push button and a slide which is at least partly located inside the push button and is movable in the direction of motion of the push button together with the push button. In order to obtain a compact construction of the electric push button switch, the slide is held on the push button at a distance from a first side wall of the push button and the socket projects into the push button and is substantially located there between the slide and the first side wall of the push button.

Abstract: An electric steering column switch for motor vehicles which includes a switching member pivotally mounted for pivotal movement about a pivot axis between predetermined positions. The switching member includes a locking cam that engages a locking lever which is mounted for swivelling movement with respect to the switching member. The locking lever has switch cams that correspond to the predetermined positions of the switching member and receive the locking cam to hold the switching member in one of the predetermined positions. A spring biases against the locking lever urging the lever in the direction of the locking cam. The spring is mounted to the switching member so that the spring pivots with the switching member and the locking cam. In this way, the spring applies consistent pressure against the locking lever and the adjacent locking cam.

Abstract: This invention is an electric switch, in particular, a turn-signal switch for motor vehicles for indicating a change of direction of a lane change. In this switch, a carrier mounted in a housing is movable out of a central position into opposite directions preferably by a switch lever which is swivellable about an axis of rotation fixed on the housing. A switch of this kind must be compact and equipped with so-called click elements as movable contacts. This is achieved in that a first snap contact bar is swivellably mounted on an outer end closely to one side wall of the switch housing and has a catch on its inner end.

Abstract: A windshield cleaning system with a washing system includes a washing liquid pipe non-rotatably fixed in a bore of a wiper shaft, the end of which washing liquid pipe is inserted into a pot-like connecting piece protected against twisting. Thereby the connecting piece is bracelessly centered with respect to the end of the washing liquid pipe so that it can also make a possible wobbling movement of the end in radial direction. Thus a long lifetime of the connecting point between the rotating end of the washing liquid pipe and the non-rotatable connecting piece is achieved.

Abstract: An electric motor, in particular an electric small-size motor for driving windshield wipers on motor vehicles including a cup-shaped motor housing, a gear housing closing one front side of the motor housing by an end shield and having a cup-shaped section for receiving gearing elements and a cover closing the cup-shaped section of the gear housing, a holding device for an electric component positioned in a pocket of the cup-shaped section of the gear housing, in particular a holding device for at least one noise suppressor as coil, capacitor or diode, which electric component is connected in an electrically conductive way with a carbon brush arranged in the motor housing.

Abstract: A double feed pump has two outlet channels to be selectively acted upon with liquid in accordance with the direction of rotation of a feed element and two movable sealing membranes one each being assigned to an outlet channel and separating a valve chamber into a front compartment with valve seat and into a rear compartment, whereby one front compartment each of one valve chamber and one rear compartment of the other valve chamber are connected by a pressure channel. In order to facilitate the manufacture of the parts the sealing membranes are arranged one beside the other in a parting plane of a two-part housing and in each housing half are positioned, assigned to one sealing membrane, an outlet channel and a front compartment with valve seat, and, assigned to the other sealing membrane, a rear compartment and a pressure channel between the front and rear compartments.

Abstract: The present invention relates to a drive unit, in particular for a windshield wiper system on a motor vehicle, comprising a drive motor, a gearing accommodated in a gear housing and following the drive motor, which gearing has an output shaft driven in pendulum fashion and a pinion seated on it in a manner protected against twisting as well as including a stop member for limiting the pendulum angle of the output shaft. The stop member is either swivellable with the pinion or firmly arranged on the output shaft. In order to obtain a good guidance and a reliable hold of the stop member it is pushed upon the output shaft by means of a ring-shaped portion. In particular the ring-shaped portion can simultaneously serve as a buffer disc for the pinon, so that in comparison with a known drive unit, piece parts can be saved.

Abstract: A connection and two step method of manufacturing is disclosed for a drive unit for a wiper arm system which consists of a wiper shaft mounted in a bore through a crank arm. The wiper shaft is formed with a groove disposed within the thickness of the crank arm and material from one surface of the crank arm is displaced to form an annular recess which causes crank arm material adjacent the groove to be radially displaced into a groove formed in the wiper shaft to form an axial holding element. The radial distance R1 of the recess from the crank arm bore is substantially equal to the axial distance A1 of the groove below the one crank arm surface to facilitate the extruding process. Knurled areas on the shaft on either side of the groove are press fit into the crank arm bore as a first step in assembling the shaft to the crank arm, bringing a flange into abutment against the other surface of the crank arm.

Abstract: A windshield wiper, especially for motor vehicle, is described comprising a carrier yoke, a rubber element, and a resilient support for the rubber element on the carrier yoke. The resilient support of the rubber element includes a resilient strip with several resilient lugs pointing in a first direction and at least one resilient lug pointing in a second direction opposite to the first direction. Thus, the rubber element is guided and resiliently supported on the carrier yoke at both ends.

Abstract: A process of assembling a wiper system, in which, in a transport position, the wiper arms are fixed onto the wiper shaft in a simply releasable manner and then the unit, pre-assembled in such a way, is delivered to the manufacturer of motor vehicles. There the wiper arms are swivelled from their transport position into their operational position and are permanently fixed onto the proper wiper shaft. Matching the wiper arms to the wiper system during the transport effectively prevents the manufacturer of motor vehicles from assembling them wrongly.

Abstract: A wiper system for motor vehicles is described in which a pivot-shaft assembly is fixed to the one end of a pipe-like carrier held by way of its other end on a stud of a motor carrier member stable in form. Wiper systems of this kind can also be produced at low costs for motor vehicles in which the assembly conditions are difficult.

Abstract: A connection and two step method of manufacturing is disclosed for a drive unit for a wiper arm system which consists of a wiper shaft mounted in a bore through a crank arm. The wiper shaft is formed with a groove disposed within the thickness of the crank arm and material from one surface of the crank arm is displaced to form an annular recess which causes crank arm material adjacent the groove to be radially displaced into a groove formed in the wiper shaft to form an axial holding element. The radial distance R1 of the recess from the crank arm bore is substantially equal to the axial distance A1 of the groove below the one crank arm surface to facilitate the extruding process. Knurled areas on the shaft on either side of the groove are press fit into the crank arm bore as a first step in assembling the shaft to the crank arm, bringing a flange into abutment against the other surface of the crank arm.

Abstract: An electric motor, in particular a wiper motor for driving a windshield wiper system in a motor vehicle, which comprises a gear housing including a cover and several plug contacts, of which some are fixed on the gear housing, in particular on the cover, and at least another is connected with a motor current supply lead and fitted in a plug housing. In order to provide good protection of the plug contacts and the gear housing interior against dirt, the plug housing has an opening with a circumferential rim, through which the plug contacts fixed on the gear housing enter the plug housing. Furthermore the plug housing rests firmly against the gear housing around the opening.

Abstract: Pendulum gears for windshield wipers of motor vehicles are known, which pendulum gears comprise a first gear member provided with teeth, which gear member is non-rotatably seated on a driven shaft, and a second gear member provided with teeth, which gear member meshes with the first gear member, and by which the first gear member can be driven in pendulum motion between two reversing positions. The noises occurring in the reversing positions of the first gear member are to be reduced. For this purpose the tooth play between the teeth of the two gear members is decreased towards the reversing position of the first gear member. Thus a beating noise caused by the teeth when changing the tooth flanks is avoided.

Abstract: A steering column switch for motor vehicles includes a switch housing and a switch lever mounted therein which may be pivoted about an axis together with a switching member, which switch lever is provided with at least one read-out panel which may be illuminated by a light guide traversing the switch lever, which light guide is aligned with a light source by a light-input area. The light source is fitted and protected in the switch housing; it is free from hard switching-on and switching-off impacts of the switch lever. In particular, it is arranged centrally around the pivotal axis of the switch lever and switching member, so that it is possible to illuminate the read-out panel with the same intensity in all switching positions of the switch lever relative to the pivotal axis.

Abstract: A windshield wiping device for swivelling windshields of motor vehicles. The device includes a wiper shaft, which is supported on the assembly adjacent to the swivel axis of the windshield, and a wiper arm projecting over the windshield. The arm includes an attachment part, by means of which it is attached to the wiper shaft, and a pivoting part which can be swivelled relative to the attachment part around a swivelling axis, and which, by means of an electrical motor is brought into a stopping position on the windshield, in which the electrical motor is independently switched off by means of a stopping position switch. In order to open the windshield without damage, in the stopping position, the swivelling axis, between the attachment part and the pivoting part of the wiper arm, is directed at least approximately in parallel to the swivelling axis of the windshield.

Abstract: A lamp for motor vehicles including a fog warning or backup lamp. The lamp comprises a lamp compartment which is covered by a transparent cover glass towards the front portion. A bulb projects into the lamp compartment from the back and a parabolic reflector diverts light from the bulb onto the cover glass. High light values are obtained even in the case of a small light transmitting surface at the front of the lamp compartment. This is achieved in that the cross-section of the lamp compartment is larger than the light transmitting surface at the front of the lamp compartment and that the bulb is partly surrounded by a ball reflector which is located outside the light transmitting surface. The center of the ball reflector is at least approximately identical with the filament of the bulb and the ball reflector casts light form the bulb onto the parabolic reflector.

Abstract: This invention relates to a distance measuring device, in particular for motor vehicles, in which a converter is utilized for transmission of an ultrasonic signal and also for reception of the echo signal. Thereby the echo signal received by the converter is compared at a comparator with a threshold value after having been appropriately amplified. This threshold value is at a particular changeover time changed over from a first high value, which is independent of time, to a smaller, time-dependent value. Thereby the changeover time is computed from a measured time depending on the dying-out behavior of the converter.

Abstract: A windshield cleaning system with a spraying device is described, in which windshield cleaning system a jet element made of an elastic material is carried in an adjustable jet body formed in the shape of a ball. The jet element is formed with elastic lips forming a spraying mouth which is normally closed and which is located outside of the jet body. The spraying mouth is opened by the pressure of the washing liquid. With such an arrangement the direction of the spraying jet can be adjusted and the washing liquid is prevented from freezing due to the fact that the spraying mouth can be closed.