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).
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Patent number: 8770603Abstract: 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: GrantFiled: June 26, 2012Date of Patent: July 8, 2014Assignee: Schaeffler Technologies GmbH & Co. KGInventors: Bernd Wittmann, Ralf Mayer, Andrea Lottes, Norbert Hofmann
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Publication number: 20130009374Abstract: 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: ApplicationFiled: June 26, 2012Publication date: January 10, 2013Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KGInventors: Bernd Wittmann, Ralf Mayer, Andrea Lottes, Norbert Hofmann
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Publication number: 20100267979Abstract: 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: ApplicationFiled: June 21, 2007Publication date: October 21, 2010Applicant: WACKER CHEMIE AGInventors: Andreas Bauer, Thomas Frey, Norbert Hofmann, Peter Schulz, Peter Wasserscheid
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Patent number: 7722364Abstract: 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: GrantFiled: August 8, 2008Date of Patent: May 25, 2010Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbHInventors: Herbert Klinger, Gerhard Thomas, Norbert Hofmann, Martin Petrzik, Joachim Delfs
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Publication number: 20090061657Abstract: 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: ApplicationFiled: August 8, 2008Publication date: March 5, 2009Applicant: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbHInventors: Herbert Klinger, Gerhard Thomas, Norbert Hofmann, Martin Petrzik, Joachim Delfs
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Patent number: 6958016Abstract: 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: GrantFiled: October 2, 2003Date of Patent: October 25, 2005Assignee: GKN Driveline Deutschland GmbHInventor: Norbert Hofmann
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Publication number: 20040110568Abstract: 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: ApplicationFiled: October 2, 2003Publication date: June 10, 2004Inventor: Norbert Hofmann
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Patent number: 6714900Abstract: 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: GrantFiled: September 7, 1999Date of Patent: March 30, 2004Assignee: AlstomInventors: Frank Busse, Norbert Hofmann
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Patent number: 6708549Abstract: 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: GrantFiled: August 26, 2002Date of Patent: March 23, 2004Assignee: GKN Löbro GmbHInventors: Volker Hainz, Norbert Hofmann, Michael Ricks
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Patent number: 6251019Abstract: 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 anType: GrantFiled: May 4, 1999Date of Patent: June 26, 2001Assignee: GKN Lobro GmbHInventors: Norbert Hofmann, Michael Ricks
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Patent number: 6242630Abstract: 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: GrantFiled: August 11, 1997Date of Patent: June 5, 2001Assignee: Huels AktiengesellschaftInventors: Stefan Bade, Uwe Schoen, John Burkhard, Franz-Michael Bollenrath, Norbert Hofmann, Hermann-Josef Korte, Hartwig Rauleder, Uwe Tanger
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Patent number: 6210282Abstract: 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: GrantFiled: March 27, 1998Date of Patent: April 3, 2001Assignee: GKN Lobro GmbHInventor: Norbert Hofmann
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Patent number: 5658199Abstract: 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: GrantFiled: August 16, 1995Date of Patent: August 19, 1997Assignee: Lohr & Bromkamp GmbHInventors: Michael Ricks, Norbert Hofmann
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Patent number: 5620399Abstract: 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: GrantFiled: August 16, 1995Date of Patent: April 15, 1997Inventor: Norbert Hofmann
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Patent number: 5573464Abstract: 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: GrantFiled: August 17, 1994Date of Patent: November 12, 1996Assignee: Lohr & Bromkamp GmbHInventors: Norbert Hofmann, Michael Ricks
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Patent number: 5525109Abstract: 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 thType: GrantFiled: September 15, 1994Date of Patent: June 11, 1996Assignee: GKN Automotive AGInventors: Norbert Hofmann, Michael Ricks, Volker Bergmann
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Patent number: 5507693Abstract: 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: GrantFiled: July 13, 1993Date of Patent: April 16, 1996Assignee: Lohr & Bromkamp GmbHInventors: Peter Schwarzler, Volker Bergmann, Dieter Burghardt, Norbert Hofmann, Michael Ricks, Hans-Heinrich Welschof
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Patent number: 5391013Abstract: 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: GrantFiled: September 10, 1992Date of Patent: February 21, 1995Assignees: Lohr & Bromkamp GmbH, GKN Automotive AGInventors: Michael Ricks, Norbert Hofmann, Friedholm John, Werner Krude, Dieter Jost, Peter Harz, Jorg Bensinger
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Patent number: 5376049Abstract: 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: GrantFiled: September 17, 1992Date of Patent: December 27, 1994Assignee: Lohr & Bromkamp GmbHInventors: Hans-Heinrich Welschof, Peter Schwarzler, Michael Ricks, Norbert Hofmann, Friedhelm John, Hans Wormsbacher, Dieter Burghardt
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Patent number: RE36163Abstract: 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: GrantFiled: April 10, 1996Date of Patent: March 23, 1999Assignees: Lohr & Bromkamp GmbH, GKN Automotive AGInventors: Michael Ricks, Norbert Hofmann, Friedhelm John, Werner Krude, Dieter Jost, Peter Harz, Jorg Bensinger