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: 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: A wiper system is disclosed for motor vehicles in which during normal wiper operation the windshield wiper moves back and forth between two reversing positions, but stops in a depressed parking position outside the wiping area after the power switch is turned off. According to the invention the parking position is changed in dependence on the temperature so that in low temperatures the windshield wiper does not enter the gap between the hood and the windshield. This prevents the wiper from being blocked by ice or snow in the gap. At higher temperatures, the wiper is parked in the depressed parking position as in the prior art.

Abstract: This invention describes a wiper blade with a substantially U-shaped supporting yoke between the side walls of which is fixed a component part which, coaxially to bores in the side walls of the supporting yoke, has a bearing bore for a pivot pin connecting the wiper blade and wiper arm. The diameter of the bore in the side walls is larger than the diameter of the pivot pin, so that a metallic contact between pivot pin and side walls of the supporting yoke is prevented. In order to secure the position of the bearing axially a metallic locking spring is additionally fixed in this component part which cooperates with a groove in the pivot pin.

Abstract: In a reciprocating wiper system for motor vehicles with a piston adjustably guided in a housing a slide fixed on the housing in a torsionally firm way is provided as a protection against twisting, the slide is longitudinally guided on a guide element fixed to the housing. To compensate for unavoidable tolerances of position and shape of the guide elements and the slide a calotte-shaped bearing body is fittingly guided on the guide element. The bearing body is movably mounted with play in the radial direction in a calotte-shaped receiver on the slide.

Abstract: In a wiper blade for a vehicular windshield wiper system, the main yoke is equipped with a spoiler constructed such that the overall height of the wiper blade is not enlarged and nevertheless the spoiler is prevented from touching the window pane to be cleaned. The spoiler is formed in such a way that the wiping pattern does not deteriorate at low or higher driving speeds.

Abstract: An adjusting device in accordance with the invention for vehicular door locking systems operates such that in each adjusting action the adjusting force of the drive motor is checked to determine whether it is great enough to operate the output element. Only when this checking has a positive result is an adjusting action initiated.

Abstract: In a windshield wiper system for motor vehicles the contact pressure of the wiper onto the window is adjustable while the wiper is moving. For this purpose a multi-part actuator driven by an electromotive adjusting device and guided in a bore of the wiper shaft is axially displaced. The multi-part construction of this actuator compensates for faulty alignment, so that the adjusting mechanism operates with a good efficiency and enables rapid adjusting times.

Abstract: This invention relates to a windshield wiper system in which, in order to relieve the wiper lip in the parking position of the windshield wiper, a magnet becomes effective whose force is without contact opposed to the contact pressure which in known manner is produced for example by a tension spring between fastening member and link of the wiper arm.

Abstract: In a reciprocating wiper system for motor vehicles a piston is linearly displaceably guided in a housing and mounted in a bearing which is seated in a receptacle of the housing. A scraper ring and a sealing ring intended to clean the piston are positioned in front of the bearing. The sealing ring and the scraper ring are jointly mounted in the housing with the bearing as a structural unit. In a preferred embodiment the sealing ring and the scraper ring are held on a universal ball joint being part of the bearing.

Abstract: A windshield wiper system includes two windshield wipers of which each is mounted on a separate wiper shaft and may be driven to and fro by a separate motor between an inner reversing position and an outer reversing position, which windshield wipers are at least partially superposed in their inner reversing position and rotate in opposite directions through one wiping cycle. The two windshield wipers are moved without collision even though they wipe an overlapping area. The first windshield wiper is driven by its associated motor with a greater angular velocity of the output shaft than the second windshield wiper is driven by its motor. In addition the first windshield wiper is stopped for a predetermined time in its inner reversing position between two wiping cycles.

Abstract: In vehicular electric door lock arrangement the running time of a first adjusting unit is longer than the worst possible running times of the other adjusting units. The first adjusting unit operates a switching unit via which the running time of the other adjusting units is preset. The separate timing element for the control of the various adjusting units used in prior systems can be omitted, because this timing function is provided by one of the adjusting units.

Abstract: The piston of a reciprocating wiper system on which a wiper arm is mounted is guided to be linearly displaceable in a capshaped bearing and has a slide which is longitudinally guided by two guide elements fixed to the housing. To achieve jam-free guidance on the guide elements without adjustment, the slide is guided with a capshaped bearing on one guide element in a closed manner. In contrast thereto there is a play between the slide and the second guide element in the plane defined by the guide elements.

Abstract: A gearing of a reciprocating wiper system has two toothed wheels meshing with each other of which one is firmly connected with a crank. The mesh of a given tooth of one toothed wheel in a given space width of the other toothed wheel corresponds to a particular position of the crank. To facilitate assembly and to reduce the risk of assembly errors, in a particular position of the crank one toothed wheel has only one tooth which may be axially pushed into one space width of the other toothed wheel such that the meshing of the tooth in the space width corresponds to the particular position of the crank.

Abstract: A windshield wiper unit with a wiper arm of telescopic construction which has a housing driven to and fro round an axis of rotation by a driving motor and a slide movable in relation to the housing, this slide being displaceable by a crank assembly is so designed that the various bearings are subjected to little load and so that compact construction is possible. This is achieved by having the connecting rod belonging to the crank assembly above or below the slide and linked to the slide between the two bearings for it and by having the distance between the two bearings at least as great as the stroke of the slide.

Abstract: A windshield wiper has its wiper blade, in the longitudinal direction, held and guided relative to the wiper arm in several places. This prevents any undesired transverse and longitudinal play during the wiping motion.

Abstract: A windshield wiper unit has a slide which is supported so as to be movable in a longitudinal direction in a housing which is driven to and fro, and a wiper arm which is fastened with a fastening part to an end section of the slide. A low overall height is achieved by the fastening part having a recess with which it is placed on the end section of the slide in the longitudinal direction of the slide and by the end section being jammed in the recess.