Patents Assigned to Neumayer Tekfor Holding GmbH
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Publication number: 20100218583Abstract: A transmission, particularly for a motor vehicle, having at least two torque transmitting shafts, shafts suitable for use in such a transmission, and a method for the production such shafts. At least one of the shafts is composed of a shaft base body (10) and at least one gearwheel (3a, 4a), which is at least substantially finished separately from the shaft and subsequently is fixed to the shaft in such a way as to transmit torque available at the shaft or input torque by the gearwheel having a hollow hub body (13, 14) and being axially pressed onto a seat (11, 12) on the shaft base body so as to form a frictional connection which transmits the torque from the shaft to the gearwheel.Type: ApplicationFiled: May 14, 2010Publication date: September 2, 2010Applicant: Neumayer Tekfor Holding GmbHInventors: Manfred VOGEL, Volker Szentmihalyi
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Patent number: 7765846Abstract: A method of producing a hollow shaft having first and second profilings provided for torque transmission at respective ends thereof, wherein a shaft section between the ends has a smaller diameter than at least one of the profilings, and the hollow shaft is assembled from hollow shaft and sleeve components joined via a torque-transmitting slip joint, in which the shaft and sleeve components are each formed from cut blanks by cupping, perforating. cold extrusion and turning steps, and the respective components are assembled to each other.Type: GrantFiled: March 13, 2008Date of Patent: August 3, 2010Assignee: Neumayer Tekfor Holding GmbHInventors: Rainer Stueckrad, Helmut Straub
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Publication number: 20100162976Abstract: A camshaft assembly, particularly for use in an internal combustion engine, having a shaft base body and a plurality of cam parts. In order to be able to selectively shut down individual cylinders, cam parts are provided with cams which are arranged so as to be rotationally fixed and axially displaceable in relation to the shaft base body. Depending on a desired sequence of axially fixed and axially displaceable cam parts, it is proposed to arrange the axially displaceable cam parts on a longitudinally extending profile in an axially displaceable manner and to push the axially fixed cam parts—insofar as these are necesary—over or across the receiving area for the axially displaceable cam parts and to secure them to the shaft.Type: ApplicationFiled: October 29, 2009Publication date: July 1, 2010Applicant: Neumayer Tekfor Holding GmbHInventors: Markus Schuler, Renald Kuempel
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Publication number: 20100102053Abstract: A method for producing a combustion chamber, particularly for airbags, with a barrel shaped body to which an ignition chamber is attached by welding and which has a transition opening between the ignition chamber and the barrel shaped body and a discharge opening in the barrel shaped body lying substantially opposite the transition opening, the barrel shaped body having a wall thickness in the vicinity of the discharge opening and in the vicinity of the transition opening or of the region where the ignition chamber is attached is greater than the wall thickness of the remainder of the barrel shaped body.Type: ApplicationFiled: December 28, 2009Publication date: April 29, 2010Applicant: Neumayer Tekfor Holding GmbHInventors: Walter Richter, Stefan Malm
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Publication number: 20100068428Abstract: A method of producing a hollow shaft base body including a first step in which a perform (1a) having a transition diameter and a bore (4a) is produced by shaping, and an additional step in which the perform is shaped incrementally to form the hollow shaft base body (1b), and a hollow shaft base body produced by the foregoing method.Type: ApplicationFiled: November 25, 2009Publication date: March 18, 2010Applicant: Neumayer Tekfor Holding GmbHInventor: Matthias Derse
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Publication number: 20100062892Abstract: A differential provided with a drive wheel comprising two pairs of bevel gears disposed in a two-part housing, one of the pairs of bevel gears being a pair of axle bevel gears and the other pair of bevel gears being a pair of compensating bevel gears.Type: ApplicationFiled: October 5, 2009Publication date: March 11, 2010Applicant: Neumayer Tekfor Holding GmbHInventors: Manfred Vogel, Volker Szentmihalyi, Matthias Derse
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Publication number: 20100031764Abstract: A composite body, such as a gear wheel or torsional vibration damper, including a radially inner hub body provided with outer profiles, a surrounding outer body provided with inner profiles, and an intermediate layer of synthetic resin material which connects the outer profiles of the hub body with the inner profiles of the outer body; the hub body being with an inner contour adapted to mount the composite body on a shaft.Type: ApplicationFiled: October 16, 2009Publication date: February 11, 2010Applicant: Neumayer Tekfor Holding GmbHInventor: Matthias Derse
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Publication number: 20100004065Abstract: A displacement unit comprising two shaft-shaped drive components which are displaceable in one another and each have a plurality of roller body raceways facing one another with roller bodies arranged between them. To both save weight and facilitate proper positioning of the components, a profile groove is provided between two adjacent roller body raceways of at least one drive component, the profile groove having a profile depth which is smaller than the profile depth of one of the adjacent roller body raceways.Type: ApplicationFiled: June 19, 2009Publication date: January 7, 2010Applicant: Neumayer Tekfor Holding GmbHInventor: Martin Lehmann
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Publication number: 20090317182Abstract: The invention relates to a connecting arrangement between a shaft end and a joint part in which a collar on a connecting nut engages behind a another collar on the shaft end or on the joint part or on a clamping nut which clamps a bearing on the shaft, and one of the collars is formed by a oval ring received in a groove which facilitates disassembly of the connection formed by the connecting arrangement.Type: ApplicationFiled: June 19, 2009Publication date: December 24, 2009Applicant: Neumayer Tekfor Holding GmbHInventor: Volker Szentmihalyi
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Patent number: 7610885Abstract: A rotor (2) and/or rotor housing (1) for a camshaft adjuster for a motor vehicle engine and a method for manufacturing the same.Type: GrantFiled: March 21, 2008Date of Patent: November 3, 2009Assignee: Neumayer Tekfor Holding GmbHInventors: Rainer Stueckrad, Stefan Malm, Helmut Straub, Walter Richter
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Publication number: 20090208276Abstract: A connecting arrangement between a shaft journal (2), which is mounted so as to be axially fixed with respect to a unit, and a joint part (10) which can be pivotably attached to the shaft journal in a rotationally fixed manner. A shaft nut (5) having an internal thread (6) which can be screwed onto an external thread (4) of the shaft journal, is provided with an additional external thread (8) onto which a further nut (12) can be screwed via a counter-thread (21) to produce an axially acting interlocking connection (13) between the further nut (12) and the joint part (10).Type: ApplicationFiled: February 23, 2009Publication date: August 20, 2009Applicant: Neumayer Tekfor Holding GmbHInventors: Volker Szentmihalyi, Mathias Lutz, Ewald Baechle
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Publication number: 20090176585Abstract: A torque transmission device such as a fixed constant velocity ball joint constructed as an opposed track joint and a process for producing such a device, in which the curvatures bases of the tracks of the joint deviate in their axial course from the curvatures of the ball contact lines. The process is characterized in that prior to the formation of a longitudinal profile of the joint component, the component is brought to an increased hardness by a hardening process and a diffusion layer is partially or completely removed in the region of the longitudinal profile.Type: ApplicationFiled: January 5, 2009Publication date: July 9, 2009Applicant: Neumayer Tekfor Holding GmbHInventors: Volker SZENTMIHALYI, Mathias LUTZ, Ekkehard KOERNER
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Publication number: 20090176586Abstract: A torque transmitting device, such as a fixed constant velocity ball joint as a counter track joint and a method for producing such a joint, in which the curvatures of the bases of the joint tracks deviate in their axial course from the curvatures of the ball contact lines. The method is characterized in that the joint component is brought to an increased hardness by a hardening process prior to the formation of the longitudinal profile of the component, and a diffusion layer is partially or completely removed in the region of the longitudinally profiled structure.Type: ApplicationFiled: January 5, 2009Publication date: July 9, 2009Applicant: Neumayer Tekfor Holding GmbHInventors: Volker SZENTMIHALYI, Mathias LUTZ, Ekkehard KOERNER
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Publication number: 20080312000Abstract: A rotor (2) and/or rotor housing (1) for a camshaft adjuster for a motor vehicle engine and a method for manufacturing the same.Type: ApplicationFiled: March 21, 2008Publication date: December 18, 2008Applicant: Neumayer Tekfor Holding GmbHInventors: Rainer Stueckrad, Stefan Malm, Helmut Straub, Walter Richter
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Publication number: 20080309057Abstract: A combustion chamber, particularly for airbags, with a barrel shaped body to which an ignition chamber is attached and which has a transition opening between the ignition chamber and the barrel shaped body and a discharge opening in the barrel shaped body lying substantially opposite the transition opening, the barrel shaped body having a wall thickness in the vicinity of the discharge opening and in the vicinity of the transition opening or of the region where the ignition chamber is attached is greater than the wall thickness of the remainder of the barrel shaped body, and to a method for producing such a combustion chamber.Type: ApplicationFiled: March 13, 2008Publication date: December 18, 2008Applicant: Neumayer Tekfor Holding GmbHInventors: Walter Richter, Stefan Malm
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Publication number: 20080280691Abstract: A hollow shaft having improved profilings such as external splines, which are provided for torque transmission at its two ends, in which shaft sections between the profilings have smaller diameters than at least one of the profilings, and in which the hollow shaft is assemblable or assembled from two components, one of which components includes the shaft section and the profiling and at the end of the shaft opposite the profiling an external torque-transmitting profile of a slip joint, and the other component being a sleeve-like component with the second profiling at one end and an internal torque-transmitting profile of the slip joint at its other end, and method for producing the components and the assembled shaft.Type: ApplicationFiled: March 13, 2008Publication date: November 13, 2008Applicant: Neumayer Tekfor Holding GmbHInventors: Rainer Stueckrad, Helmut Straub
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Publication number: 20080264199Abstract: A shaft, such as a camshaft for use in the internal combustion engine of a motor vehicle, in which the shaft includes a basic shaft body, a plurality of functional bodies, such as cams, mounted in axially spaced positions on the basic shaft body, and at least one balancing element mounted on the basic shaft body, in which the at least one balancing element is produced separately from the basic shaft body and from the functional bodies, and the functional bodies and the at least one balancing element are subsequently mounted on said basic shaft body, for example, by axial press fitting.Type: ApplicationFiled: August 7, 2006Publication date: October 30, 2008Applicant: Neumayer Tekfor Holding GmbHInventors: Manfred Vogel, Matthias Derse, Matthias Bechtold, Thomas Winkler
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Publication number: 20080194347Abstract: A transmission, particularly for a motor vehicle, having at least two torque transmitting shafts, shafts suitable for use in such a transmission, and a method for the production such shafts. At least one of the shafts is composed of a shaft base body (10) and at least one gearwheel (3a, 4a), which is at least substantially finished separately from the shaft and subsequently is fixed to the shaft in such a way as to transmit torque available at the shaft or input torque by the gearwheel having a hollow hub body (13, 14) and being axially pressed onto a seat (11, 12) on the shaft base body so as to form a frictional connection which transmits the torque from the shaft to the gearwheel.Type: ApplicationFiled: February 4, 2008Publication date: August 14, 2008Applicant: Neumayer Tekfor Holding GmbHInventors: Manfred Vogel, Volker Szentmihalyi
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Publication number: 20080173128Abstract: A shaft comprising functional elements, such as an assembled camshaft for an internal combustion engine, a method for producing such shafts, and internal combustion engines equipped with such shafts. The functional elements each have a bore and are produced separately from the shaft main body, and the bore is subsequently press fit onto the shaft body to attach the functional element in an axially and rotationally fixed manner. The shaft is also provided with at least one roller bearing that includes at least one undivided roller bearing element which is mounted on the shaft body between two functional elements, for example, by press fitting.Type: ApplicationFiled: February 5, 2008Publication date: July 24, 2008Applicant: Neumayer Tekfor Holding GmbHInventors: Manfred Vogel, Matthias Derse, Matthias Bechtold