Patents by Inventor Norbert Hofmann

Norbert Hofmann 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).

  • Patent number: 8770603
    Abstract: A divided roll stabilizer of a motor vehicle between whose two stabilizer parts (2a) an actuator (1) can be arranged for a torsion of the stabilizer parts (2a). At least one of the stabilizer parts (2a) is provided with a torsion transmitting connecting part (4a) for connection to the actuator (1), and the connecting part (4a) is magnetically coded.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: July 8, 2014
    Assignee: Schaeffler Technologies GmbH & Co. KG
    Inventors: Bernd Wittmann, Ralf Mayer, Andrea Lottes, Norbert Hofmann
  • Publication number: 20130009374
    Abstract: A divided roll stabilizer of a motor vehicle between whose two stabilizer parts (2a) an actuator (1) can be arranged for a torsion of the stabilizer parts (2a). At least one of the stabilizer parts (2a) is provided with a torsion transmitting connecting part (4a) for connection to the actuator (1), and the connecting part (4a) is magnetically coded.
    Type: Application
    Filed: June 26, 2012
    Publication date: January 10, 2013
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Bernd Wittmann, Ralf Mayer, Andrea Lottes, Norbert Hofmann
  • Publication number: 20100267979
    Abstract: Organosilanes are prepared by hydrosilylation of unsaturated organic compounds by monomeric silanes containing at least one silicon bonded hydrogen, in a process wherein an ionic liquid containing a hydrosilylation catalyst is present as one phase, and the reactants are present in at least a second phase.
    Type: Application
    Filed: June 21, 2007
    Publication date: October 21, 2010
    Applicant: WACKER CHEMIE AG
    Inventors: Andreas Bauer, Thomas Frey, Norbert Hofmann, Peter Schulz, Peter Wasserscheid
  • Patent number: 7722364
    Abstract: A holder with a device for holding a flexible circuit board is provided. The holder comprises at least one further device for holding at least one component such that the component may be electrically connected to or disconnected from the circuit board.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: May 25, 2010
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Herbert Klinger, Gerhard Thomas, Norbert Hofmann, Martin Petrzik, Joachim Delfs
  • Publication number: 20090061657
    Abstract: A holder with a device for holding a flexible circuit board is provided. The holder comprises at least one further device for holding at least one component such that the component may be electrically connected to or disconnected from the circuit board.
    Type: Application
    Filed: August 8, 2008
    Publication date: March 5, 2009
    Applicant: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbH
    Inventors: Herbert Klinger, Gerhard Thomas, Norbert Hofmann, Martin Petrzik, Joachim Delfs
  • Patent number: 6958016
    Abstract: A tripode joint having an outer joint part (11) having three uniformly circumferentially distributed recesses (15) which forms pairs of circumferentially opposed tracks (16) for receiving a roller assembly (13). Each roller assembly (13) is carried on an arm (19) of a tripode star (12). Each arm head has a spherical surface portion. Each roller assembly (13) includes an annular roller carrier (23, 123), bearing needles (24) rotating on the roller carrier (23, 123), and rollers (25) which are rotatably supported on the bearing needles (24). The roller carriers (23, 123) include stop collars which delimit the needle contact face, and which are held with an axial displacement clearance in the direction of the roller axes between axial securing members (26, 27) in such a way that they are secured against being lost relative to the rollers (25).
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: October 25, 2005
    Assignee: GKN Driveline Deutschland GmbH
    Inventor: Norbert Hofmann
  • Publication number: 20040110568
    Abstract: A tripode joint having an outer joint part (11) having three uniformly circumferentially distributed recesses (15) which form pairs of circumferentially opposed tracks (16) for receiving a roller assembly (13). Each roller assembly (13) is carried on an arm (19) of a tripode star (12). Each arm head has a spherical surface portion. Each roller assembly (13) includes an annular roller carrier (23), bearing needles (24) rotating on the roller carrier (23), and rollers (25) which are rotatably supported on the bearing needles (24). The roller carriers (23) include stop collars which delimit the needle contact face, and which are held with an axial displacement clearance in the direction of the roller axes between axial securing members (26, 27) in such a way that they are secured against being lost relative to the rollers (25).
    Type: Application
    Filed: October 2, 2003
    Publication date: June 10, 2004
    Inventor: Norbert Hofmann
  • Patent number: 6714900
    Abstract: The invention describes a method for generating a shell mold for castings, in which the shell mold is described from a multiplicity of finite volume elements and/or surface elements which are connected to one another via node points and which together form a mesh points for describing the surface of the shell mold. First, the real surface geometry of the casting is recorded and generated in the form of a coherent base mesh. Then, an approximated simulation of the real surface geometry is complied by means of finite volume elements and/or surface elements. This is followed by the determination of in each case one shell node point for each node point contained in the base mesh and the generation of shell vectors and a new surface element which is positioned above each shell node point and in each case defines a volume element which, together with all the other newly formed volume elements, leads to a first layer of the shell mold.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: March 30, 2004
    Assignee: Alstom
    Inventors: Frank Busse, Norbert Hofmann
  • Patent number: 6708549
    Abstract: A method of and device for forming a tripode star for a tripode joint, which tripode star comprises an annular hub member and three arms which adjoin the hub member, extend radially relative to a longitudinal axis (A) and form faces of spherical portions each positioned circumferentially relative to arm axes (Z) of the arms, wherein, in a first production stage, the hub member and the three arms are preformed from a blank by means of a first tool divided in a plane (E1) containing the arm axes (Z) and wherein, in a second production stage, pairs of burr-free faces of spherical portions positioned opposite one another in the circumferential direction relative to the hub member (12) are formed on to the preformed arms by means of a second tool divided in planes extending through the longitudinal axis (A) of the hub member and through the arm axes (Z).
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: March 23, 2004
    Assignee: GKN Löbro GmbH
    Inventors: Volker Hainz, Norbert Hofmann, Michael Ricks
  • Patent number: 6251019
    Abstract: A constant velocity plunging joint is disclosed that includes an outer joint part having a cylindrical hollow chamber with an aperture at a first end, which cylindrical hollow chamber, at its other end, is closed by a base and in which there are formed uniformly circumferentially distributed, longitudinally extending tracks; an inner joint part which is positioned centrally in the cylindrical hollow chamber of the outer joint part so as to be angularly movable and longitudinally displaceable; and torque transmitting elements which, in the direction of rotation, are form-fittingly connected to the inner joint part and which, in the direction of rotation, engage the tracks of the outer joint part from-fittingly and so as to roll therein in the longitudinal direction; wherein, at the open end of the outer joint part, the end face is provided with caulkings which form raised portions reducing the free inner cross-section of the -cylindrical hollow chamber; wherein an assembly consisting of the inner joint part an
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: June 26, 2001
    Assignee: GKN Lobro GmbH
    Inventors: Norbert Hofmann, Michael Ricks
  • Patent number: 6242630
    Abstract: A process for the continuous preparation of 3-halopropylorganosilanes of the general structure RbH3-a-bXaSiCH2CH2CH2Y  (III), where: R is CH3, C2H5, C3H7, OCH3, OC2H5 or OC3H7, X is F, Cl, Br or I, Y is F, Cl, Br or I, and a and b are each one of the numbers 0, 1, 2 or 3 and the sum a+b is 1, 2 or 3, comprising reacting, as starting materials, an allyl halide with a silane carrying at least one H atom, wherein the starting materials are present in stoichiometric amounts or one of the starting materials is present in substoichiometric amounts, wherein the reaction carried out is a partial reaction of from 10% to 80%, on a molar basis, of the starting materials, based on either material, when both are present in stoichiometric amounts, or based on the substoichiometric material.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: June 5, 2001
    Assignee: Huels Aktiengesellschaft
    Inventors: Stefan Bade, Uwe Schoen, John Burkhard, Franz-Michael Bollenrath, Norbert Hofmann, Hermann-Josef Korte, Hartwig Rauleder, Uwe Tanger
  • Patent number: 6210282
    Abstract: An outer joint part of a constant velocity universal joint comprises an externally cylindrical casing part. An inside is provided with tracks to allow the engagement of torque transmitting elements, and which further comprises a substantially annular flange part which is provided with a central inner recess and which is slid on to the casing part and connected thereto, as well as circumferentially distributed fixing holes for threading on a counter flange. The flange part comprises circumferentially distributed, individual, separate fixing portions which receive the fixing holes, and connecting portions which connect the fixing portions and have a greater flexibility than said fixing portions.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: April 3, 2001
    Assignee: GKN Lobro GmbH
    Inventor: Norbert Hofmann
  • Patent number: 5658199
    Abstract: A tripod joint has an outer joint part with three circumferentially distributed, axis parallel recesses and an inner joint part. The inner joint part has a star-shaped cross-section with three circumferentially distributed arms which engage the recesses of the outer joint part. The roller assemblies are supported on the arms. Each roller assembly includes a roller carrier and a roller rotatably supported by a needle bearing on the roller carrier. The rollers are pivotably arranged relative to the respective arms so as to be axially and angularly movable relative to the arm axis. The rollers have running faces, which are loaded under torque transmission, and end or annular faces, which adjoin the running faces on the radial outside and inside with reference to the joint axis. The annular faces, in cross-section through the outer joint part, are complementary to the outer joint part, axially relative to the roller axis and supportingly, come to rest in and against the outer joint part recesses.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: August 19, 1997
    Assignee: Lohr & Bromkamp GmbH
    Inventors: Michael Ricks, Norbert Hofmann
  • Patent number: 5620399
    Abstract: Gripping sleeve for tightly gripping an object by hand, particularly fitness machines and equipment. A plate (1) is made of a tightly gripping or clinging material, such as a cellular rubber, which is connected by a web (2) to a wrist band (3).
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: April 15, 1997
    Inventor: Norbert Hofmann
  • Patent number: 5573464
    Abstract: A tripod joint has an outer joint part with three axially extending recesses and an inner joint part with three radially circumferentially distributed arms, each engaging one of the longitudinal recesses. Roller assemblies, with roller carriers and roller elements, are carried on the arms. A mechanism cooperating with the inner joint part provides a form-fitting resistance to prevent the roller assemblies from axial removal from their respective arm.
    Type: Grant
    Filed: August 17, 1994
    Date of Patent: November 12, 1996
    Assignee: Lohr & Bromkamp GmbH
    Inventors: Norbert Hofmann, Michael Ricks
  • Patent number: 5525109
    Abstract: A tripode joint with an outer joint part which comprises three circumferentially distributed axis-parallel recesses forming circumferentially opposed tracks, and an inner joint part whose cross-section is star-shaped and which is provided with three circumferentially distributed arms which engage the recesses of the outer joint part, with the arms supporting roller assemblies each comprising a roller carrier and a roller, which by way of a needle bearing, is rotatably supported on the roller carrier, with the rollers being arranged relative to the respective arms so as to be axially movable relative to the arm axis and angularly movable relative to the arm axis; and with reference to the roller axis (B), there is provided only one mutually effective axial securing element between each roller carrier and the respective roller in the form of only one single securing ring which may be subjected to loads in both directions and which engages radially opposed first and second annular grooves in the inner face in th
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: June 11, 1996
    Assignee: GKN Automotive AG
    Inventors: Norbert Hofmann, Michael Ricks, Volker Bergmann
  • Patent number: 5507693
    Abstract: A constant velocity universal joint of the tripod type has an outer joint part with three axially extending, circumferentially distributed longitudinal recesses with circumferentially distributed opposed tracks. The tracks have surfaces which are grooved so as to have the shape of a circular cylindrical portion. An inner joint part includes three radial circumferentially distributed arms each engaging one of the longitudinal recesses and carrying roller assemblies having roller carriers and roller elements. The roller elements have running faces in the shape of a spherical portion and are axially guided so as to roll on the tracks in the longitudinal recesses of the outer joint part. The roller carriers are guided on the arms so as to be pivotable and longitudinally movable relative to the respective arm axis.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: April 16, 1996
    Assignee: Lohr & Bromkamp GmbH
    Inventors: Peter Schwarzler, Volker Bergmann, Dieter Burghardt, Norbert Hofmann, Michael Ricks, Hans-Heinrich Welschof
  • Patent number: 5391013
    Abstract: A tripod joint has an outer joint part with three circumferentially distributed, axis-parallel recesses forming circumferentially distributed opposed tracks. An inner joint part has a star-shaped cross-section and three circumferentially distributed arms engaging the recesses in the outer joint part. The arms support roller assemblies. When torque is transmitted with the joint in an extended position, the resultant K.sub.1 of the forces acting from the inner joint part directly on a roller forms a shorter perpendicular distance from the joint axis than the resultant K.sub.2 of the counter forces acting from the outer joint part on the roller, so that, when torque is introduced into the joint, at any angle of articulation of the operating range, the roller is subject to a tilting moment.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: February 21, 1995
    Assignees: Lohr & Bromkamp GmbH, GKN Automotive AG
    Inventors: Michael Ricks, Norbert Hofmann, Friedholm John, Werner Krude, Dieter Jost, Peter Harz, Jorg Bensinger
  • Patent number: 5376049
    Abstract: A tripod joint has an outer joint component having three circumferentially distributed recesses with parallel axes forming circumferentially opposing tracks. An inner joint component has a spider-shape cross-section with three circumferentially distributed arms which engage recesses of the outer joint component. The arms support roller assemblies. Each roller assembly includes a roller-carrier and a roller that runs directly on the tracks. The roller is arranged to slide axially along the arm axis and swivel with angular movement relative to the arm axis. A support is provided between the roller assembly and the outer joint component. The support absorbs tilting moments exerted on the roller assembly about an axis parallel to the joint axis and tilting moments exerted on the roller assembly about an axis perpendicular to, and spaced from, the joint axis.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: December 27, 1994
    Assignee: Lohr & Bromkamp GmbH
    Inventors: Hans-Heinrich Welschof, Peter Schwarzler, Michael Ricks, Norbert Hofmann, Friedhelm John, Hans Wormsbacher, Dieter Burghardt
  • Patent number: RE36163
    Abstract: A tripod joint has an outer joint part with three circumferentially distributed, axis-parallel recesses forming circumferentially distributed opposed tracks. An inner joint part has a star-shaped cross-section and three circumferentially distributed arms engaging the recesses in the outer joint part. The arms support roller assemblies. When torque is transmitted with the joint in an extended position, the resultant K.sub.1 of the forces acting from the inner joint part directly on a roller forms a shorter perpendicular distance from the joint axis than the resultant K.sub.2 of the counter forces acting from the outer joint part on the roller, so that, when torque is introduced into the joint, at any angle of articulation of the operating range, the roller is subject to a tilting moment.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: March 23, 1999
    Assignees: Lohr & Bromkamp GmbH, GKN Automotive AG
    Inventors: Michael Ricks, Norbert Hofmann, Friedhelm John, Werner Krude, Dieter Jost, Peter Harz, Jorg Bensinger