Patents Assigned to Thyssenkrupp Presta Steertec GmbH
  • Patent number: 7954396
    Abstract: A rack and pinion steering gear comprising a thrust element disposed in a housing for pressing a rack and pinion against one another. One side of the thrust element is supported against the rack, and another side is supported against a wedge-like part formed of two semi-circular annular elements, each of which is provided with at least one wedge surface that is disposed at an angle to a central plane of the wedge-like part. A side of the wedge-like part remote from the thrust element is supported against a set screw. The thrust element and/or the set screw is provided with an inclined surface that cooperates with the at least one wedge surface of the annular elements of the wedge-like part.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: June 7, 2011
    Assignee: ThyssenKrupp Presta Steertec GmbH
    Inventors: Manfred Rombold, Michael Weigel
  • Patent number: 7823687
    Abstract: The invention relates to an electric power steering for a motor vehicle that may include a gear rack (11) that is positioned axially displaceable inside a steering housing (I) and is driven by an electric servomotor (16), arranged inside a motor housing (7), with the aid of a belt (14) that runs inside a surrounding housing part (6) and a gear (12) for assisting the steering, wherein the belt (14) is configured ferromagnetically and at least one magnet (20) is arranged inside the housing part (6), beside the belt (14) and at a distance to the belt (14).
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: November 2, 2010
    Assignee: ThyssenKrupp Presta SteerTec GmbH
    Inventors: Matthias Spengler, Jens Keppler, Jens Stolzenburg
  • Patent number: 7823688
    Abstract: The invention relates to an electric power steering for a motor vehicle, that may include a gear rack (11) that is positioned axially displaceable inside a steering housing (1) and can be driven by an electric servomotor (16), arranged inside a motor housing (7), with the aid of a belt (14) and a gear (12) for assisting with the steering. A simple and reliable belt tensioning is possible by providing an insertion wedge (21) between the motor housing (7) and the steering housing (1), which pushes the motor housing (7) away from the steering housing (1) for the purpose of tensioning of the belt (14).
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: November 2, 2010
    Assignee: ThyssenKrupp Presta SteerTec GmbH
    Inventors: Matthias Spengler, Jens Keppler, Jens Stolzenburg
  • Publication number: 20100059308
    Abstract: The invention relates to an electric power steering for a motor vehicle, comprising a gear rack (11) that is positioned axially displaceable inside a steering housing (1) and is driven by an electric servomotor (16), arranged inside a motor housing (7), with the aid of a belt (14) that runs inside a surrounding housing part (6) and a gear (12) for assisting the steering, wherein the belt (14) is configured ferromagnetically and at least one magnet (20) is arranged inside the housing part (6), beside the belt (14) and at a distance to the belt (14).
    Type: Application
    Filed: January 7, 2008
    Publication date: March 11, 2010
    Applicant: ThyssenKrupp Presta SteerTec GmbH
    Inventors: Matthias Spengler, Jens Keppler, Jens Stolzenburg
  • Publication number: 20100044145
    Abstract: The invention relates to an electric power steering for a motor vehicle, comprising a gear rack (11) that is positioned axially displaceable inside a steering housing (1) and can be driven by an electric servomotor (16), arranged inside a motor housing (7), with the aid of a belt (14) and a gear (12) for assisting with the steering. A simple and reliable belt tensioning is possible by providing an insertion wedge (21) between the motor housing (7) and the steering housing (1), which pushes the motor housing (7) away from the steering housing (1) for the tensioning of the belt (14).
    Type: Application
    Filed: January 7, 2008
    Publication date: February 25, 2010
    Applicant: ThyssenKrupp Presta SteerTec GmbH
    Inventors: Matthias Spengler, Jens Keppler, Jens Stolzenburg
  • Patent number: 7331419
    Abstract: The invention relates to a steer-by-wire steering system comprising a hydraulic control unit that acts on the steerable wheels (1, 20), the control unit having at least one cradle (4, 23), which is displaceably mounted on at least one guide rod (5, 24) that passes through the respective cradle (4, 23). The respective cradle (4, 23) and the corresponding guide rod(s) (5, 24) form working chambers (A11, A12, A21, A22) of a piston-cylinder system, whereby each respective guide rod (5, 24) has at least one channel (KA11, KA12, KA21, KA22), each terminating in the vicinity of a working chamber (A11, A12, A21, A22). The cradle or cradles (4, 23) adjust the steerable wheels (1, 20) directly or by means of steering tie rods (2, 21).
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: February 19, 2008
    Assignee: ThyssenKrupp Presta Steertec GmbH
    Inventors: Karsten Sikora, Jochen Horwath
  • Patent number: 7311033
    Abstract: A retroactive device as part of a hydraulic servo-steering system that also includes a hydraulic servo-valve device, the retroactive device comprising an arrangement for hydraulically producing a restoring moment into a central position that produces the restoring moment as a function of the pressure differential between a pressure side and a low-pressure side. The system has at least one valve arrangement that, when pressure is applied in the central position of the servo-valve, is adapted to produce a pressure differential between the external and internal chambers of the valve. The valve arrangement is disposed hydraulically in series with the retroactive device.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: December 25, 2007
    Assignee: ThyssenKrupp Presta SteerTec GmbH
    Inventors: Edwin Breuning, Carmine Cioppi, Jens Stolzenburg
  • Patent number: 7181325
    Abstract: A vehicle steering system having a steering handle for steering at least one wheel is provided, and includes an arrangement for applying torque to the steering handle and a sensor for detecting applied steering torque. The arrangement generates a return torque, as a function of the steering angle, for driving the steering handle into a central position. During a first driving state in which applied steering torque is above a threshold value, the function curve of the return torque increases monotonically and no return torque is generated at a steering angle of zero. During a second driving state in which applied steering torque is below the threshold value, the arrangement generates a return torque that is greater than that given by the function curve in the first driving state, at least at small steering angles.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: February 20, 2007
    Assignee: ThyssenKrupp Presta SteerTec GmbH
    Inventors: Harwin Niessen, Roman Frank Starbeck
  • Patent number: 7162341
    Abstract: A motor-driven power steering unit comprising an electric motor for producing an auxiliary steering force in a steering system coupling a steering wheel to two wheels of a vehicle. The steering system provides assistance, based on steering information, to a rotation of the steering wheel by control of an electric current fed to the electric motor. A steering angle detection device is provided, wherein the steering system regulates the assistance as a function of a steering angle detected by the detection device. The assistance, or current, is reduced after a pre-set or pre-definable angle is reached or exceeded prior to reaching a respective end position. The reduction of the assistance or current is cancelled as soon as signs of steering force and the steering angel no longer coincide.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: January 9, 2007
    Assignee: ThyssenKrupp Presta SteerTec GmbH
    Inventors: Klaus von Hammel, Harwin Niessen
  • Patent number: 7036626
    Abstract: A vehicle steering system for controlling a steering or steering lock angle of at least one wheel of a vehicle having a steering handle or wheel, whereby the actual manual torque or force that is to be applied by the driver for controlling the vehicle being regulated by a control device is a function of the vehicle condition or state values.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: May 2, 2006
    Assignee: Thyssenkrupp Presta Steertec GmbH
    Inventors: Harwin Niessen, Hremann Henrichfreise
  • Publication number: 20060053915
    Abstract: A steering system for a motor vehicle, comprising a shaft that is rotatably mounted on the chassis of the vehicle, a carriage that is connected to the shaft via a threaded mechanism so as to be displaceable along the shaft, two tie rods secured to the carriage and extending to wheels of an axle of the vehicle, and a bar that is secured to the chassis of the vehicle and extends parallel to the shaft, wherein the bar extends through the carriage, which is displaceable along the bar.
    Type: Application
    Filed: October 13, 2003
    Publication date: March 16, 2006
    Applicant: ThyssenKrupp Presta SteerTec GmbH
    Inventor: Jochen Horwath