Patents by Inventor Ngoc-Thach Nguyen

Ngoc-Thach Nguyen 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: 9712029
    Abstract: A holding element (68, 82) for attaching magnets (62) to a rotor (20) of an electrical machine (10). This electrical machine is, in particular, designed as an AC generator and comprises intermediate spaces (60) between the individual poles (24, 25). The holding element (68, 82) comprises a top side (72) and spring lugs (70) which axially fix the magnets (62). The holding element (68, 82) has claw-like projections (74) which bear against flanks (80) of the poles (24, 25) when the holding element (68, 82) is in the fitted state.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: July 18, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Christa Bauch, Guenter Rademacher, Martin Schulz, Ngoc-Thach Nguyen, Guillermo Saiz, Paola Zapico Fanjul, Vincent Riou
  • Patent number: 9124164
    Abstract: The invention relates to an electric machine (10), in particular a generator for a motor vehicle, comprising an exciter system composed of a plurality of electrically excited salient poles. The salient poles can be designed within the stator (16) or rotor (20) in the form of electromagnetically excited poles (22, 23; 24, 25) which are axially and radially oriented on the periphery and are alternatively polarized in the peripheral direction. In order to improve performance and reduce the magnetic leakage flux, permanent magnets (66), which are secured by means of a magnetically non-excitable holding element (60), are inserted into interstices (74) between the alternating poles (24, 25). The holding element (60) is bilaterally mounted in pole grooves (92, 94), is radially, axially, and tangentially resilient, and has a wave-shaped (62) and/or bead-shaped (76, 78; 86) profile.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: September 1, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Christa Bauch, Martin Schulz, Oliver Eckert, Ngoc-Thach Nguyen, Christian Dayan
  • Patent number: 8823239
    Abstract: The invention relates to an electrical machine (8), in particular an electric motor, suitable for the adjustment by external force of elements of a motor vehicle, essentially for driving a steering booster. The inventive electrical machine comprises a rotor (7) and a shaft (10), the rotor having a plurality of plates (5), wherein the plates (5) are premounted on the shaft either individually or as a plate assembly (6) or by means of a plurality of plate assemblies (6), the rotor (7) being connected to the shaft (10). The plates (5) have resilient lugs (3) for fixing the plates (5) and/or plate assemblies (6) to the shaft (10). Furthermore, the plates (5) of the plate assemblies (6) comprise centering lugs (1) which serve to radially center the plate assembly (6) relative to the shaft (10).
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: September 2, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Ossenkopp, Joachim Becker, Holger Klatte, Erik Maurer, Ngoc-Thach Nguyen, Stefan Stoermer, Bruno Holzwarth, Tilo Koenig
  • Patent number: 8203248
    Abstract: The invention relates to an electric motor having a stator and a rotor in a housing, wherein the stator comprises a plurality of lamellae that are disposed in parallel and are combined into a package. The lamellae are held together via a spring clamp, which overlaps the lamella package in an axial manner, wherein the spring clamp simultaneously supports the lamella package radially on the interior wall of the housing.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: June 19, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Christa Bauch, Ole Berkefeld, Martin Schulz, Ngoc-Thach Nguyen
  • Publication number: 20120032548
    Abstract: The invention relates to an electric machine (10), in particular a generator for a motor vehicle, comprising an exciter system composed of a plurality of electrically excited salient poles. The salient poles can be designed within the stator (16) or rotor (20) in the form of electromagnetically excited poles (22, 23; 24, 25) which are axially and radially oriented on the periphery and are alternatively polarized in the peripheral direction. In order to improve performance and reduce the magnetic leakage flux, permanent magnets (66), which are secured by means of a magnetically non-excitable holding element (60), are inserted into interstices (74) between the alternating poles (24, 25). The holding element (60) is bilaterally mounted in pole grooves (92, 94), is radially, axially, and tangentially resilient, and has a wave-shaped (62) and/or bead-shaped (76, 78; 86) profile.
    Type: Application
    Filed: October 26, 2009
    Publication date: February 9, 2012
    Inventors: Christa Bauch, Martin Schulz, Oliver Eckert, Ngoc-Thach Nguyen, Christian Dayan
  • Publication number: 20100320865
    Abstract: The invention relates to an electric motor having a stator and a rotor in a housing, wherein the stator comprises a plurality of lamellae that are disposed in parallel and are combined into a package. The lamellae are held together via a spring clamp, which overlaps the lamella package in an axial manner, wherein the spring clamp simultaneously supports the lamella package radially on the interior wall of the housing.
    Type: Application
    Filed: October 15, 2008
    Publication date: December 23, 2010
    Applicant: Robert Bosch GMBH
    Inventors: Christa Bauch, Ole Berkefeld, Martin Schulz, Ngoc-Thach Nguyen
  • Publication number: 20100187944
    Abstract: The invention relates to an electrical machine (8), in particular an electric motor, suitable for the adjustment by external force of elements of a motor vehicle, essentially for driving a steering booster. The inventive electrical machine comprises a rotor (7) and a shaft (10), the rotor having a plurality of plates (5), wherein the plates (5) are premounted on the shaft either individually or as a plate assembly (6) or by means of a plurality of plate assemblies (6), the rotor (7) being connected to the shaft (10). The plates (5) have resilient lugs (3) for fixing the plates (5) and/or plate assemblies (6) to the shaft (10). Furthermore, the plates (5) of the plate assemblies (6) comprise centering lugs (1) which serve to radially center the plate assembly (6) relative to the shaft (10).
    Type: Application
    Filed: January 24, 2008
    Publication date: July 29, 2010
    Applicant: Robert Bosch GMBH
    Inventors: Stefan Ossenkopp, Joachim Becker, Holger Klatte, Erik Maurer, Ngoc-Thach Nguyen, Stefan Stoermer, Bruno Holzwarth, Tilo Koenig
  • Patent number: 7511399
    Abstract: The present invention relates to a stator assembly for an electrical machine, including a housing and a stator, in which the housing has at least one inward-oriented bead extending in the axial direction.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: March 31, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Eberhard Lung, Oliver Eckert, Ricardo Chombo Vidales, Christa Bauch, Quoc-Dat Nguyen, Ngoc-Thach Nguyen
  • Publication number: 20090080823
    Abstract: An electric motor (1) having a mount system (2) is used in particular as a motor for power-assisted steering. The mount system (2) has a roller bearing (8) in the form of a movable bearing, wherein a rolling-surface body (25; 26) of the roller bearing (8) has a groove in which a spring element (18) is arranged. When the electric motor (1) is mounted, the spring element (18) is prestressed in a radial direction (20), with the result that play-free mounting of a shaft (5) of the electric motor (1) is ensured in the radial direction (20) by means of the roller bearing (8).
    Type: Application
    Filed: October 10, 2006
    Publication date: March 26, 2009
    Inventors: Christa Bauch, Eberhard Lung, Ricardo Chombo Vidales, Quoc-Dat Nguyen, Oliver Eckert, Reinhold Lohrmann, Ngoc-Thach Nguyen, Richard Gerstenberger
  • Publication number: 20070159022
    Abstract: The present invention relates to a stator assembly for an electrical machine, including a housing and a stator, in which the housing has at least one inward-oriented bead extending in the axial direction.
    Type: Application
    Filed: December 15, 2004
    Publication date: July 12, 2007
    Inventors: Eberhard Lung, Oliver Eckert, Ricardo Vidales, Christa Bauch, Quoc-Dat Nguyen, Ngoc-Thach Nguyen
  • Patent number: 7237962
    Abstract: The present invention relates to an electrical machine 1, in particular an electric motor, with a housing 2 and covers 3, 4 that close the housing 2 and contain bearings 7, 8 that rotatably support a rotor 5. According to the present invention, spring elements 7.3, 8.3 are provided that act upon at least one bearing shell 7.1, 7.2, 8.1, 8.2 each of bearings 7, 8 with a compression force acting in the axial direction, whereby the mounting of the bearing shell 7.1, 7.2, 8.1, 8.2 that is acted upon by one of the spring elements 7.3, 8.3 is configured as a sliding fit.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: July 3, 2007
    Assignee: Robert Bosch GmbH
    Inventors: Maik Zernikow, Oliver Eckert, Ngoc-Thach Nguyen
  • Publication number: 20050238274
    Abstract: The present invention relates to an electrical machine 1, in particular an electric motor, with a housing 2 and covers 3, 4 that close the housing 2 and contain bearings 7, 8 that rotatably support a rotor 5. According to the present invention, spring elements 7.3, 8.3 are provided that act upon at least one bearing shell 7.1, 7.2, 8.1, 8.2 each of bearings 7, 8 with a compression force acting in the axial direction, whereby the mounting of the bearing shell 7.1, 7.2, 8.1, 8.2 that is acted upon by one of the spring elements 7.3, 8.3 is configured as a sliding fit.
    Type: Application
    Filed: July 31, 2003
    Publication date: October 27, 2005
    Inventors: Maik Zernikow, Oliver Eckert, Ngoc-Thach Nguyen
  • Publication number: 20040251769
    Abstract: An electrical machine, in particular a starter for motor vehicles, with a stator (36) and a rotor (39) is proposed; the rotor has a hollow shaft (63) with various shaft segments. The electrical machine is characterized in that the shaft (63), between a bearing seat (81) and a shaft segment contour (108) for transmitting a torque, is a one-piece tube.
    Type: Application
    Filed: August 6, 2004
    Publication date: December 16, 2004
    Inventors: Ngoc-Thach Nguyen, Quang-Ngoc Tran, Holger Roesner, Stefan Ossenkopp, Gerd Kirtsen, Quoc-Dat Nguyen
  • Patent number: 6763735
    Abstract: A starter device for starting internal combustion engines having a starter motor (20) that comprises a stator (22) and a rotor (23) as well as a drive shaft (58) as starter components (21), further having a driven element (70) that can actively be connected to the drive shaft (58) and the internal combustion engine, and having a brake device (100) that acts on the driven element (70) is proposed. The starter device is characterized in that the brake device (100) can be actuated by means of at least one starter component (21) by switching on the starter motor (20).
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: July 20, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Hans-Dieter Siems, Ngoc-Thach Nguyen, Sven Hartmann, Hans Braun
  • Patent number: 6693503
    Abstract: A relay (10), in particular for a starter for an internal combustion engine, is proposed. The relay (10) includes a relay coil (13) and a solenoid armature (22) which can be moved when full battery current flows to the relay coil (13). A contact member (37) can be actuated by the solenoid armature (22), whereby an operating lever (31) is situated on the contact member (37). It is provided that a coupling element (46) connects the operating lever (31) and the solenoid armature (22) with each other in a manner that allows them to slide with limits.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: February 17, 2004
    Assignee: Robert Bosch Company
    Inventors: Ngoc-Thach Nguyen, Quang-Ngoc Tran, Arno-Albert Binnewies, Werner Sander, Heinz Stichnoth, Karl-Wilhelm Boecker, Andreas Hamerich, Lutz Lehnert, Josef Weigt, Gunter Meyer, Dietmar Krause, Hans-Joachim Binio
  • Publication number: 20030097891
    Abstract: A starter device for starting internal combustion engines having a starter motor (20) that comprises a stator (22) and a rotor (23) as well as a drive shaft (58) as starter components (21), further having a driven element (70) that can actively be connected to the drive shaft (58) and the internal combustion engine, and having a brake device (100) that acts on the driven element (70) is proposed. The starter device is characterized in that the brake device (100) can be actuated by means of at least one starter component (21) by switching on the starter motor (20).
    Type: Application
    Filed: March 4, 2002
    Publication date: May 29, 2003
    Inventors: Hans-Dieter Siems, Ngoc-Thach Nguyen, Sven Hartmann, Hans Braun
  • Patent number: 6219604
    Abstract: A steer-by-wire steering system comprised of an electronically regulated steering positioner mounted to the steering gear of the front axle or to both front wheels of a vehicle together with an electronic steering regulator and a feedback actuator. A sensor senses the driver's selected direction from the steering wheel. Road feedback can be relayed to the driver through a feedback actuator via the steering wheel. The loss of road feel caused by the absence of the steering column, which normally strongly influences the driver's directional wish, is recreated by the feedback actuator.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: April 17, 2001
    Assignee: Robert Bosch GmbH
    Inventors: Elmar Dilger, Peter Ahner, Herbert Lohner, Peter Dominke, Chi-Thuan Cao, Ngoc-Thach Nguyen, Helmut Janetzke, Thorsten Allgeier, Wolfgang Pfeiffer, Bo Yuan, Bernd Muller, Klaus Ries-Mueller, Werner Harter, Thomas Sauer, Werner Hess, Peter Blessing
  • Patent number: 6056605
    Abstract: To reduce the risk of breakage and yet ensure good electric and thermal conductivity, pull-off strength and long service life of the connection, when connecting a contact element to a conductor (1) by crimping, the inner surface of the crimp section (6), in contact with the conductor (1), is provided with deformations that are grooves (2) and ribs running crosswise and obliquely to the longitudinal axis of the conductor (1).
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: May 2, 2000
    Assignee: Robert Bosch GmbH
    Inventors: Ngoc-Thach Nguyen, Helmut Bauch, Gunter Meyer
  • Patent number: 5533415
    Abstract: The starter apparatus for an internal combustion engine includes a starter motor; an axially shiftable starting gear engageable with a ring gear of the internal combustion engine; a drive train for transferring rotary motion of a drive shaft of the starter motor to the starting gear, the drive train including a plurality of parts from the starting gear to the drive shaft; a free wheel clutch coupled with the drive shaft of the starter motor; and a shock absorber spring device for damping torque shocks between the starting gear and the drive shaft occurring on operation of the starter and located in the drive train between the starting gear and the drive shaft of the starter motor.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: July 9, 1996
    Assignee: Robert Bosch G.m.b.H.
    Inventors: Manfred Ackermann, Ngoc-Thach Nguyen, Siegfried Schustek, Quang-Ngoc Tran
  • Patent number: 5481236
    Abstract: The engaging relay for a starter device of an internal combustion engine includes a magnetic core having a relay coil and provided with a through-opening with a guide section; an armature including a switching axle extending through the through-opening of the magnetic core; a bushing mounted around the switching axle in an axially displaceable manner in the guide section of the core; a contact bridge nonrotatably fixed to the bushing; main current contacts mounted opposite the contact bridge so as to be contactable with the contact bridge by energizing the relay coil; a spring for holding the contact bridge away from the main current contacts in a resting position of the contact bridge; and anti-rotation means for preventing rotation of the bushing in the guide section relative to the magnetic core so as to maintain the contact bridge in a rotationally fixed relationship with the main current contacts.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: January 2, 1996
    Assignee: Robert Bosch GmbH
    Inventors: Walter Ruehle, Ngoc-Thach Nguyen, Arno-Albert Binnenwies, Hartmut Schuette