Patents by Inventor Wolfgang Scholl
Wolfgang Scholl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5724855Abstract: A transmission gear for use with systems for cleaning windscreens, window-panes or optical instruments, comprising a wiper arm supported by a carriage performing reciprocating movements, and a gear for transforming rotary movements into oscillating movements, which cooperates with a driving means and actuates the carriage, with the gear, on the driven side, being connected to a shaft performing oscillating movements.Type: GrantFiled: July 12, 1995Date of Patent: March 10, 1998Assignee: ITT Automotive Europe GmbHInventors: Gunter Mayer, Wolfgang Scholl
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Patent number: 5713098Abstract: A system for cleaning light transmitting elements such as windscreens, window-panes or optical instruments, comprising a wiper arm supported by a carriage performing reciprocating movements, and a intermediate gear means for transforming rotary movements into oscillating movements, with the intermediate gear means cooperating with a driving means and actuating the carriage and, on the driven side, being in communication with a shaft performing oscillating movements. The shaft is the driving part of a transmission gear means for oscillating movements. The part of the transmission gear means performing movements on the driven side actuates the carriage through a tensile and/or thrust member.Type: GrantFiled: May 15, 1995Date of Patent: February 3, 1998Assignee: ITT Automotive Europe GmbHInventors: Gunter Mayer, Wolfgang Scholl
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Patent number: 5609329Abstract: A vibration damping element for attaching a windshield wipers drive unit to an automobile. The element incorporates the assembly screws, in preassembled condition, and retains them in the assembly position on the respective vibration damping element by a detachment prevention portion. To a achieve reliable detachment prevention and to reduce the effort in preassembling the assembly screws, the opening of the vibration damping element is closed by an elastomeric diaphragm attached to the vibration damping element for producing the detachment prevention. The diaphragm has a central hole with a smaller inside diameter than the thread diameter of the assembly screw. Thus, the assembly screw is held captive on the vibration damping element by the edge of the central hole being clamped elastically on the threaded screw stem.Type: GrantFiled: June 23, 1995Date of Patent: March 11, 1997Assignee: ITT Automotive Europe GmbHInventor: Wolfgang Scholl
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Patent number: 5339510Abstract: A method of manufacturing a wiper blade for a windshield wiper system of a motor vehicle is described, in which wiper blade a pivot pin, that is cylindrical all along its length, is non-rotatably fixed onto a secondary yoke and engages into bearing bushes by way of its ends, which bearing bushes are non-rotatably fixed into the side walls of a primary yoke. This articulated connection is advantageous with respect to corrosional behaviour and thus with respect to the lifetime in comparison to known articulated connections with an articulated rivet that is non-rotatably connected with the primary yoke.Type: GrantFiled: July 16, 1993Date of Patent: August 23, 1994Assignee: ITT Automotive Europe GmbHInventors: Christian Roth, Wolfgang Scholl
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Patent number: 5271122Abstract: A wiper blade for a windshield wiper system of a motor vehicle is described, in which wiper blade a pivot pin, that is cylindrical all along its length, is non-rotatably fixed onto a secondary yoke and engages into bearing bushes by way of its ends, which bearing bushes are non-rotatably fixed into the side walls of a primary yoke. This articulated connection is advantageous with respect to corrosional behaviour and thus with respect to the lifetime in comparison to known articulated connections with an articulated rivet that is non-rotatably connected with the primary yoke.Type: GrantFiled: June 22, 1992Date of Patent: December 21, 1993Assignee: SWF Auto-Electric GmbHInventors: Christian Roth, Wolfgang Scholl
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Patent number: 5231730Abstract: A wiper blade for a windshield wiper system of motor vehicles is described, in which wiper blade a reinforcing rail is secured against longitudinal movement in its central area on the wiper lip. The securement is performed by a cam pressed from the blade and received in a recess of the reinforcing rail. The relative movement between the reinforcing rail and the rubber wiper strip, which cannot be prevented when bent windshields are being wiped, is thereby evenly distributed over the two ends of the wiper strip. This improves the wiping effect of the wiper blade in comparison to known models, where the reinforcing rail is coupled to one end of the wiper strip.Type: GrantFiled: October 9, 1990Date of Patent: August 3, 1993Assignee: SWF Auto-Electric GmbHInventors: Eckhardt Schmid, Wolfgang Scholl
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Patent number: 5181293Abstract: A wiper system, which is used especially for motor vehicles and in which the pendulum-motion of at least one wiper blade is overlapped by a motion of the wiper blade in its longitudinal direction. The wiper blade can be moved by means of a gearing that can be driven via a stroking shaft coaxially running to the wiper shaft. The stroking shaft is connected to a coupler via a stroking swivelling lever, which coupler is linked to an intermediate lever that can swivellably be driven around a fixed axis by the drive motor. In order to be able to wipe a big part of the windshield of a motor vehicle, the coupler passes a dead center when the intermediate lever is swivelling from the one reversing position to the other, in which dead center the coupler reverses the direction of its motion.Type: GrantFiled: March 26, 1990Date of Patent: January 26, 1993Inventors: Peter Baumgarten, Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4991251Abstract: 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.Type: GrantFiled: December 20, 1988Date of Patent: February 12, 1991Assignee: SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4979259Abstract: 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.Type: GrantFiled: June 8, 1989Date of Patent: December 25, 1990Assignee: SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4879783Abstract: 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.Type: GrantFiled: June 30, 1988Date of Patent: November 14, 1989Assignee: ITT SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4877186Abstract: 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.Type: GrantFiled: June 30, 1988Date of Patent: October 31, 1989Assignee: ITT SWF Auto-Electric GmbHInventor: Wolfgang Scholl
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Patent number: 4866359Abstract: 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.Type: GrantFiled: June 30, 1988Date of Patent: September 12, 1989Assignee: SWF Auto-Electric GmbHInventors: Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4773112Abstract: 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.Type: GrantFiled: January 15, 1987Date of Patent: September 27, 1988Assignee: SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4729145Abstract: 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.Type: GrantFiled: November 27, 1985Date of Patent: March 8, 1988Assignee: SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4648148Abstract: 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.Type: GrantFiled: July 18, 1985Date of Patent: March 10, 1987Assignee: SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Walter Neubauer, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4641389Abstract: 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.Type: GrantFiled: April 26, 1985Date of Patent: February 10, 1987Assignee: SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
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Patent number: 4625359Abstract: 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.Type: GrantFiled: July 5, 1984Date of Patent: December 2, 1986Assignees: SWF-Spezialfabrik fur Autozubehor Gustav Rau GmbH, Daimler-Benz AktiengesellschaftInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl, Anton Epple, Hans Trube, Martin Pfeiffer, Josef Berger, Egon Frey
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Patent number: 4594746Abstract: 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.Type: GrantFiled: August 31, 1984Date of Patent: June 17, 1986Assignees: SWF Auto-Electric GmbH, Daimler-BenzInventors: Kurt Bauer, Reinhard Edele, Bruno Egner-Walter, John M. Longney, Eckhardt Schmid, Wolfgang Scholl, Walter Wagner, Anton Epple, Hans Trube, Martin Pfeiffer, Josef Berger
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Patent number: 4531419Abstract: To provide a power brake having relatively small hysteresis between brake pedal pressure and brake hose pressure and with compact construction, the push rod leading from the brake pedal to the brake master cylinder is divided into an input rod and an output rod. A pressure sensitive element is disposed between the rods and is displacable therewith. The pressure-sensitive element determines the force with which the servo member acts upon the output rod.Type: GrantFiled: August 21, 1981Date of Patent: July 30, 1985Assignee: ITT Industries, Inc.Inventors: Jakob Botz, Erich Mutschler, Hans Prohaska, Eckhardt Schmid, Wolfgang Scholl