Patents Assigned to Neumayer Tekfor Holding GmbH
  • Publication number: 20120108348
    Abstract: A ball joint having an inner hub which has an inner hub axis and an outer surface, in which inner races and cage guide surfaces are arranged in the inner hub; an outer hub which has an outer hub axis and an inner surface, in which outer races and cage guide surfaces are arranged in the outer hub, and a cage which is ring-shaped and has a cage axis. The inner surface of the cage extends in the direction of the cage axis, the outer surface of the cage extends away from the direction of the cage axis, an inner race is constructed to extend straight and/or parallel to the inner hub axis, and an outer race is constructed to extend straight and/or parallel to the outer hub axis.
    Type: Application
    Filed: January 9, 2012
    Publication date: May 3, 2012
    Applicant: Neumayer Tekfor Holding GmbH
    Inventor: Martin LEHMANN
  • Publication number: 20120031227
    Abstract: A connecting rod constructed as an assembly of a plurality of parts comprising a shaft, a big end eye and a small end eye connected to one another by at least one interference fit, preferably a cylindrical interference fit, and a method of producing a connecting rod from a plurality of such parts connected to one another by at least one interference fit.
    Type: Application
    Filed: October 21, 2011
    Publication date: February 9, 2012
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Mauro Moraes DE SOUZA, Juliano Savoy, Matthias Bechtold
  • Publication number: 20120011698
    Abstract: A method of producing 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: Application
    Filed: September 27, 2011
    Publication date: January 19, 2012
    Applicant: Neumayer Tekfor Holding GmbH
    Inventor: Matthias DERSE
  • Publication number: 20120015751
    Abstract: A joint, particularly a constant velocity ball joint, including an inner hub and an outer hub, which hubs exhibit respective inner and outer ball tracks which are associated with each other in pairs, and further including balls disposed in the pairs of associated inner and outer ball tracks, the tracks being configured such that at the contact points of the balls with the ball tracks the tangential planes form an angle of inclination, and the ball tracks exhibiting at any given time a continually changing curvature, as a result of which the angle of inclination is constant.
    Type: Application
    Filed: July 14, 2011
    Publication date: January 19, 2012
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Mathias LUTZ, Thomas Gregor
  • Publication number: 20120010008
    Abstract: A connecting arrangement between a shaft journal and a constant velocity rotary joint having a joint inner part and a joint outer part, in which the shaft journal engages in a rotationally fixed manner in one of the joint parts, and the shaft journal and the constant velocity rotary joint are two components. At least one clamping sleeve is provided which is axially secured on one of the components, and which includes at least one elastic element which can lock in place in a contour of the other component.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Applicant: Neumayer Tekfor Holding GmbH
    Inventor: Volker SZENTMIHALYI
  • Publication number: 20120004043
    Abstract: A vibration damper (2) that is effective in the direction of rotation of a drive shaft and has a small radial extension. For this purpose, a first shaft part (6) is provided as a sleeve (8) and a second shaft part (7) is provided as an inner part extending axially into the sleeve (8). The two shaft parts (6, 7) engage via rotary drivers in complementary negative profiles (15, 16) of an interposed elastic damper part (10) in the direction of rotation. In addition to the negative profiles, the damper part may be provided with recesses (40) which modify its damping characteristics.
    Type: Application
    Filed: September 13, 2011
    Publication date: January 5, 2012
    Applicant: Neumayer Tekfor Holding GmbH
    Inventor: Martin LEHMANN
  • Publication number: 20110305538
    Abstract: A screw connection having a screw section and a nut threaded thereon. A self-locking effect of the nut on the screw section is achieved in a simple manner in that an intermediate disk is supported non-rotatably on the screw section and is received on the nut so as to be rotatable relative to the nut. The intermediate disk includes a grid distributed around the circumference of the intermediate disk, and the nut carries at least one resiliently elastic, radially displaceable catch formed by a sheet-metal part which, after installing the nut, positively engages the grid to lock the nut against rotation relative to the screw section and intermediate disk. Upon application of a wrench to the nut, the at least one resilient, radially displaceable catch is compressed and drawn out of engagement with the grid, so that the nut can be rotated relative to the screw section.
    Type: Application
    Filed: July 15, 2011
    Publication date: December 15, 2011
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Juliano Savoy, Paulo Cesar Sigoli, Mauro Moraes De Souza
  • Patent number: 8075412
    Abstract: 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: Grant
    Filed: June 19, 2009
    Date of Patent: December 13, 2011
    Assignee: Neumayer Tekfor Holding GmbH
    Inventor: Martin Lehmann
  • Patent number: 8070614
    Abstract: A connecting arrangement between a shaft journal, which is mounted so as to be axially fixed with respect to a unit, and a joint part which can be pivotably attached to the shaft journal in a rotationally fixed manner. A shaft nut having an internal thread which can be screwed onto an external thread of the shaft journal, is provided with an additional external thread onto which a further nut can be screwed. The further nut includes first and second thread sections with different pitch directions which produce an axially acting interlocking connection between the further nut, the shaft nut and the joint part.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: December 6, 2011
    Assignee: Neumayer Tekfor Holding GmbH
    Inventors: Volker Szentmihalyi, Mathias Lutz, Ewald Baechle
  • Publication number: 20110212787
    Abstract: A damper unit (1) composed of two parts (2, 3) which are connected to rotate with one another and between which an axially elastic element (7) is disposed. Such damper units are used particularly for axial damping and for compensating slight axial misalignments of shafts in drive trains. To improve such damper units, particularly with respect to their external diameters, the axially acting energy storage device is compressed by a rotational movement produced by threads upon axial loading of the two parts.
    Type: Application
    Filed: May 11, 2011
    Publication date: September 1, 2011
    Applicant: Neumayer Tekfor Holding GmbH
    Inventor: Tobias ROSER
  • Patent number: 7992533
    Abstract: 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: Grant
    Filed: February 5, 2008
    Date of Patent: August 9, 2011
    Assignee: Neumayer Tekfor Holding GmbH
    Inventors: Manfred Vogel, Matthias Derse, Matthias Bechtold
  • Publication number: 20110143879
    Abstract: An axle assembly comprising 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: Application
    Filed: February 17, 2011
    Publication date: June 16, 2011
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Manfred VOGEL, Volker Szentmihalyi, Matthias Derse
  • Publication number: 20110126702
    Abstract: An axial piston intended for an axial piston machine and comprised of at least two components forming a driving part and a compressing part. To enable manufacture of the axial piston in an easy and inexpensive way while simultaneously reducing the weight, the components are manufactured by a solid forming process and joined together by a capacitor discharge welding process.
    Type: Application
    Filed: February 8, 2011
    Publication date: June 2, 2011
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Stefan Malm, Renald Kuempel
  • Publication number: 20110092300
    Abstract: A method for producing a torque transmission device such as a fixed constant velocity ball joint constructed as an opposed track joint 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 method is characterized in that prior to the formation of a longitudinal profile of a 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: Application
    Filed: December 29, 2010
    Publication date: April 21, 2011
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Volker SZENTMIHALYI, Mathias LUTZ, Ekkehard KOERNER
  • Publication number: 20110039627
    Abstract: 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: Application
    Filed: August 25, 2010
    Publication date: February 17, 2011
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Volker Szentmihalyi, Mathias Lutz, Ewald Baechle
  • Patent number: 7883424
    Abstract: 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: Grant
    Filed: January 5, 2009
    Date of Patent: February 8, 2011
    Assignee: Neumayer Tekfor Holding GmbH
    Inventors: Volker Szentmihalyi, Mathias Lutz, Ekkehard Koerner
  • Patent number: 7867099
    Abstract: 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: Grant
    Filed: February 23, 2009
    Date of Patent: January 11, 2011
    Assignee: Neumayer Tekfor Holding GmbH
    Inventors: Volker Szentmihalyi, Mathias Lutz, Ewald Baechle
  • Patent number: 7862440
    Abstract: The invention relates to both nut assemblies and methods for producing the same. Said nut assemblies consist of a nut body (1a) and a pressure disk (2a). The nut body has a drive portion, such as a polygonal portion, for engaging with a tool and an abutment region that can be brought into contact with the supporting surface of the pressure disk arranged on the nut body in a captive manner. The pressure disk has a central opening into which a neck formed on the nut extends axially at least in part. The neck has a projection for forming a captive connection. This projection radially overlaps or engages the thrust ring.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: January 4, 2011
    Assignee: Neumayer Tekfor Holding GmbH
    Inventors: Manfred Vogel, Ewald Baechle
  • Publication number: 20100275429
    Abstract: A method for producing an internal or external part of a torque-transmitting opposed track joint, such as a fixed constant velocity ball joint, in which approximately axially parallel extending track bases of the joint tracks have curvatures which deviate in their axial course from the curvatures of the ball contact lines. The method is characterized in that in a first step a perform with approximately axially parallel extending grooves having lateral flanks is produced, and in a second step the perform is formed into a final joint part whereby the lateral flanks of the grooves are just partially formed to achieve the ball contact lines.
    Type: Application
    Filed: July 15, 2010
    Publication date: November 4, 2010
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Volker SZENTMIHALYI, Mathias Lutz, Ekkehard Koerner
  • Publication number: 20100267511
    Abstract: A differential comprising at least one drive wheel, at least two axle wheels, at least one compensating wheel and at least one connecting element, wherein the connecting element experiences at least a first torque at least from the drive wheel, and wherein the connecting element transmits at least a second torque to at least one of the at least two axle wheels. The drive wheel is constructed such that the drive wheel at least partially surrounds at least one inner chamber; the connecting element is arranged at least partially inside the inner chamber that is at least partially surrounded by the drive wheel, and the connecting element is constructed in one piece.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 21, 2010
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Juliano SAVOY, Mauro Moraes De Souza, Philippe De Abreu Duque, Matthias Derse, Eva-Maria Finkenzeller, Renald Kuempel