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: 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 spare wiper element for a wiper blade and a method for the assembly of the spare wiper element. The spring bars are held in lateral grooves of a wiper rubber basic body and are secured by holding clamps lapping over the basic body of the wiper rubber during the assembly with the supporting yoke system.

Abstract: A drive mechanism for windshield wiper systems on motor vehicles comprises a d.c. motor to be driven in at least two different speeds of operation. The motor includes a collector, a first and a second carbon brush substantially resting against the collector diametrically opposite each other, and a third carbon brush which rests against the collector between the first and the second carbon brush. The third carbon brush is set off at a particular angle relative to the second carbon brush. When the d.c. motor is operated in the first speed of operation the first and the second carbon brush is connected to the voltage source and when the d.c. motor is operated in the second speed of operation the first and the third carbon brush is connected to a voltage source.

Abstract: A circuit arrangement for at least one electric load of a motor vehicle such as a windshield wiper system is disclosed, in which the switching signals of an operating switch of the system are in a coded manner transmitted to a programming unit which a detector with several ranges of detection for the various coded switching signals. The detector has additional ranges of detection for switching signals not associated with particular modes of operation, so that troubles in the system can be recognized by the detector in the programming unit providing for improved system operational reliability.

Abstract: This invention relates to a wiper arm with the possibility of adjusting its contact pressure, wherein the link may be brought into a stable tilted position. Upon tilting the point of application of the wiper arm pressure spring on this side of the fastening member is displaced in the direction of the articulated axle between wiper arm fastening member and wiper arm link in a manner that the perpendicular spacing between the line of application of the pressure spring and the articulated axle is diminished. This is why a small tilting angle can be realized.

Abstract: This invention describes a so-called reciprocating wiper system having a guide housing moving pendulum fashion and a wiper arm guided therein and radially retractable and extractable, wherein by various measures the volume of the guide housing is changed as compared to known embodiments and thus adapted to the space conditions in the engine compartment of a motor vehicle, wherein because of a change in the volume a lengthening of the wiper blade and thus an enlargement of the wiping area is made possible.

Abstract: This invention relates to a connecting member for a wiper blade and a wiper arm including a plastic structural member and a metallic locking spring. The structural member has a bearing bore as a receiver for a pivot pin. The locking spring is retained at a first end portion and intersects the bearing bore and acts upon the pivot pin by means of its center area. A second end portion of the spring forms a release key positioned behind the bearing bore. The release key of the locking spring is covered by a wing which is intergrally formed as part of the wall of the structural member by means of a film hinge.

Abstract: This invention describes a wiper arm, which in the receiving area (19, 14, 15) for the swivelling axis (18) between fastening member (10) and link (11) has a recess (40, 43), which permits a dipping of the spring holding yoke (30) into the swivelling axis receiving area (19, 14, 15) for achieving a stable tilted position (A) of the link (11). Thereby a low mode of construction of the wiper arm can be adhered to. In a preferred embodiment there is provided a hole-shaped recess (40) in a rolled bearing bush (19). which otherwise extends round and along the entire swivelling axis (18) thereby ensuring in addition a good guidance of the swivelling axis.

Abstract: In the switch housing of an electric switch a carrier is pivotally mounted between a housing cover plate and an intermediate cover plate by a pivot pin and a bearing bore. The switch lever of the switch can also be rotated about its longitudinal axis independently of the carrier and/or be rotated about an axis which is perpendicular to the axis of rotation of the carrier. A linearly movable slide is positioned between a housing base plate and the intermediate cover plate. The slide is adjusted by a movement of the switch lever which is independent of a carrier movement. In order to achieve this in a space-saving and simple way the pivot pin which acts as the carrier bearing in the intermediate cover plate is a hollow pin coupling the switch lever with the slide.

Abstract: An electric switch having a housing including a base plate, the switch comprising a push-button which is preferably movable in a linear direction with respect to the housing, a switching tappet movable by the push-button and swivellable relative to the switching tappet and a switching rocker rotatably mounted on the base plate, the rocker being swivellable to and fro in turns between two end positions via the push-button and the switching tappet and controlling a movable bridging contact, especially a snap-action spring.

Abstract: A brush mounting plate for an electric motor is formed as a one piece element molded from a suitable electrically non conductive material. The plate is formed with various openings, recesses and lugs on its opposed faces which serve to mount and locate components such as brush holders, inductors, and thermo switches in a compact arrangement with various components assembled to opposite faces of the plate in a stacked relationship axially of the plate. The lugs are so arranged as to enable a snap fit assembly of the inductor and thermo switches on to the plate.

Abstract: In a windshield wiper system a washing liquid channel runs through a bore in the wiper shaft and extends through a bore in the cap of a wiper arm, so that in the operating position of the cap the nozzle is arranged on that side of the cap which is opposite a fastening member, so that, in comparison with prior constructions, good cleaning effect is achieved due to an enlarged spacing between nozzle and window pane to be cleaned. So that the protruding nozzle body does not impede swivelling of the cap, the bore in the cap is larger than the outer diameter of the nozzle body and the annular gap between the rim of the bore in the cap and the nozzle body may be closed by an additional cap.

Abstract: A wiper system for motor vehicles. The wiper system has a switching circuit which derives from a timing signal, time-dependent switching and controlling signals provided by an oscillator that determines for example the duration of the intervals in an intermittent mode of operation or the reference time span for implementing anti-blocking protection of the wiper motor. The timing frequency of this oscillator is kept constant during the intervals in the intermittent mode of operation, otherwise it varies depending on the battery voltage when the wiper motor is operating. The intervals are thus maintained with precision, whereas the reference time span is adapted to the wiping time that changes as a function of the battery voltage when the motor is operating, thus ensuring optimal anti-blocking protection.

Abstract: A steering column switch for motor vehicles comprises a switch member guiding the bridging contact and being swivellably located around an axis. The stationary contacts, however, acted upon by this bridging contact are arranged along a straight line and in a plane repsectively in parallel to the axis of rotation of the switch member. The bridging contact is not directly guided by the switch member, but by a switching arm substantially radially swivellable in relation to the switch member so that the bridging contact is movable along a staight line despite the circular movement of the switch member.

Abstract: As to a reciprocating stroke wiper system for motor vehicles with a piston movably guided in a housing a projecting arm unrotatably fixed to the piston and comprising a guiding fork is provided as a protection against twisting, which projecting arm is guided along a guiding element fixed to the housing. According to the invention a rod with circular cross-section is used as a guiding element, which rod is arranged at an angle towards the axis of the piston so that the guiding areas of the guiding rod and of the guiding fork touching each other are displaced crosswise to them during the motion so that the effective guiding area is enlarged and thus wear is reduced.

Abstract: An adjusting device for a door locking system of motor vehicles is described which prevents, by means of a mechanical brake device, the motor after being switched off from further running. Before an adjusting process is started, this brake device simultaneously checks if the adjusting force of the motor is sufficient to actuate the driven element. Moreover, a coupling is realized in the power transmission path by means of a crank pin axially movable.By taking these measures operational and functional reliability is substantially improved.

Abstract: A windshield washing system for motor vehicles is described in which a non-return valve is installed into the feed pipe, which non-return valve, for ensuring a quick response from the washing system, prevents the feed pipe from emptying, while the pump is switched off. According to the invention a bypass switchable via a valve runs parallelly to this non-return valve, which bypass is opened in winter, i.e. in low outdoor temperatures, but is closed in summer. Consequently during winter mode of operation the feed pipe is emptied. Thus the washing liquid is prevented from freezing.

Abstract: An improved ignition switch for motor vehicles comprises a common fixed contact, several independent fixed contacts, and several movable bridging contacts. The bridging contacts are individually operated by tappets driven by cams on a rotatable operating member. Guide sleeves mounted in a guide plate restrict the tappet to displacements exclusively in parallel to the axis of rotation of the operating member, thereby preventing transmission of side forces to the bridging contacts. The tappets are unattached to the bridging contacts and guide plates are provided for the bridging contacts to further minimize sideways displacement of these contacts due to off center tappet application. Closing pressure is supplied to the rigid bridging contacts by a separate spring to provide consistent pressure regardless of contact temperature. Bridging contacts, tappets, and guide sleeves are located in parallel to facilitate alignment.

Abstract: For easily assembling an electric motor a locking lug is formed onto the brush support plate. In an assembly position the ratchet lug of said locking lug engages a cavity of the brush and keeps it at a distance from the commutator so that the commutator can easily be installed between the brushes. In order to release the arrest of the brushes during the assembly a releasing part of the locking lug projects into a recess in the housing cover. This arrangement is easy to manufacture and reduced the number of assembly steps.In a second embodiment the releasing part of the locking lug lies above the front side of the housing cover and projects into a recess in the housing cover lid.