Patents by Inventor Jochen Kruse

Jochen Kruse 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: 9175720
    Abstract: A ball joint with a ball pin and a steel ball pin with a joint ball. The ball joint and ball pin are suitable for use when, for example, solid-on-solid friction predominates under high static pre-loading or high operational loads and with small joint movements. A portion of the surface of the ball pin has surface layer hardening in order to increase a fatigue strength of the ball pin. The ball pin and the ball joint, on portion of the ball pin without the any surface layer hardened, includes a nitrided layer as wear protection. The ball pin and the ball joint provide an advantageous combination of high fatigue strength, good corrosion protection and high wear-resistance. The nitrided layer of ball joints, previously only regarded as improving corrosion protection, also functions as a wear protection. Thus, these ball pins overcome the mutual exclusion between surface layer hardening and nitriding.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: November 3, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Dirk Adamczyk, Wolfgang Kleiner, Klaus Pape, Wolfgang Eulerich, Martin Rechtien, Thomas Wiegmann, Manfred Heidemann, Jochen Kruse, Johannes Tabor, Rainer Jasper, Ulrich Schefzyk
  • Publication number: 20130071175
    Abstract: A ball joint with a ball pin and a steel ball pin with a joint ball. The ball joint and ball pin are suitable for use when, for example, solid-on-solid friction predominates under high static pre-loading or high operational loads and with small joint movements. A portion of the surface of the ball pin has surface layer hardening in order to increase a fatigue strength of the ball pin. The ball pin and the ball joint, on portion of the ball pin without the any surface layer hardened, includes a nitrided layer as wear protection. The ball pin and the ball joint provide an advantageous combination of high fatigue strength, good corrosion protection and high wear-resistance. The nitrided layer of ball joints, previously only regarded as improving corrosion protection, also functions as a wear protection. Thus, these ball pins overcome the mutual exclusion between surface layer hardening and nitriding.
    Type: Application
    Filed: August 30, 2012
    Publication date: March 21, 2013
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Dirk Adamczyk, Wolfgang Kleiner, Klaus Pape, Wolfgang Eulerich, Martin Rechtien, Thomas Wiegmann, Manfred Heidemann, Jochen Kruse, Johannes Tabor, Rainer Jasper, Ulrich Schefzyk
  • Patent number: 8100423
    Abstract: A connector piece for the articulated connection of structural elements of a chassis of a motor vehicle. The connector piece has a main body, formed from at least one metal sheet, which has at least one bearing or joint and includes a housing connected to the main body and an inner part which is fitted within an inside space of the housing and can move relative to the housing. The housing comprises a housing portion that surrounds the inside space and includes at least two sheet-metal strips that are arranged adjacent one another, in a longitudinal direction, and are bent between their ends, in opposite directions transverse to the longitudinal direction, such that the metal strips partially surround the inside space on different sides.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: January 24, 2012
    Assignee: ZF Friedrichshafen AG
    Inventors: Jochen Kruse, Frank Budde, Frank Nachbar, Stefan Schönhoff
  • Publication number: 20100086346
    Abstract: A connector piece for the articulated connection of structural elements of a chassis of a motor vehicle. The connector piece has a main body, formed from at least one metal sheet, which has at least one bearing or joint and includes a housing connected to the main body and an inner part which is fitted within an inside space of the housing and can move relative to the housing. The housing comprises a housing portion that surrounds the inside space and includes at least two sheet-metal strips that are arranged adjacent one another, in a longitudinal direction, and are bent between their ends, in opposite directions transverse to the longitudinal direction, such that the metal strips partially surround the inside space on different sides.
    Type: Application
    Filed: March 6, 2008
    Publication date: April 8, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Jochen Kruse, Frank Budde, Frank Nachbar, Stefan Schonhoff
  • Publication number: 20100021336
    Abstract: A ball pin or ball socket made of stainless steel with the following composition: 10.5 to 13 wt.-% of chromium, 0.005 to 0.3 wt.-% of carbon, maximum 0.015 wt.-% of sulfur, 0.2 to 1 wt.-% of silicon, 0.2 to 1 wt.-% of manganese with a balance of the composition being iron.
    Type: Application
    Filed: December 17, 2007
    Publication date: January 28, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventor: Jochen Kruse
  • Publication number: 20090038157
    Abstract: A cold forming process for manufacturing ball pivots with a ball area, a cone area and a thread area for installation in ball and socket joints by cold forming is presented, in which a ball pivot blank (1) with a shaped cone area (3) and cylindrical areas for the thread (2) and the ball (5) is manufactured at first from a bar-shaped semifinished bar stock by extrusion. The extrusion operation is followed by the forming of the ball area as another manufacturing step by means of a rolling processes. At the same time, the thread area can be formed in its final shape. Thus, the ball pivot is manufactured as a whole by cold forming only and it makes it possible to significantly increase the production output per unit of time compared to the processes known from the state of the art. At the same time, it is possible to use less expensive grades of steel, because sufficient fatigue strength of the ball pivot can be guaranteed by the cold forming.
    Type: Application
    Filed: November 25, 2004
    Publication date: February 12, 2009
    Inventors: Jochen Kruse, Klaus Rosenberger
  • Publication number: 20080199247
    Abstract: A ball and socket joint for a motor vehicle is provided with a joint housing (2), with a ball pivot (3), which is mounted rotatably and pivotably in same and which is in contact with the joint housing (2) or with a ball shell (7) arranged between this and the ball pivot (5). The ball and socket joint has an angle measuring device (20, 21), by which the angle of the ball pivot (5) relative to the joint housing (2) can be detected. At least two temperature sensors (15, 16) are arranged at spaced locations from one another in or on the joint housing (2).
    Type: Application
    Filed: July 3, 2006
    Publication date: August 21, 2008
    Inventors: Joachim Spratte, Michael Klank, Jochen Kruse
  • Publication number: 20080193207
    Abstract: A ball and socket joint, for example, for an axle system of a motor vehicle. The ball and socket joint has an essentially ring-shaped or pot-shaped joint housing (1), in the essentially cylindrical interior space of which a ball shell (3) is arranged. The ball (4) of a ball pivot is accommodated in the ball shell (3) in a slidingly movable manner. The ball and socket joint has, furthermore, a sealing bellows (6) as well as a sensor means for monitoring the tightness of the ball and socket joint.
    Type: Application
    Filed: June 14, 2006
    Publication date: August 14, 2008
    Inventors: Jochen Kruse, Joachim Spratte, Michael Klank
  • Patent number: 7334828
    Abstract: A force connection strut (1) of a chassis of a passenger car or utility vehicle is provided for the non-positive connection between a chassis and a wheel carrier, preferably an axle strut or a chassis control arm. An elongated basic body (G) and at least two end-side mount supports (5) are provided for introducing and leading out forces.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: February 26, 2008
    Assignee: ZF Lemförder Metallwaren AG
    Inventors: Frank Budde, Jochen Kruse, Stefan Schönhoff
  • Publication number: 20070211972
    Abstract: A process is provided for manufacturing balls, especially for ball and socket joints, as well as to a ball element for two-part ball pivots. The microalloyed carbon-manganese steel balls are manufactured by cold extrusion and subsequent grinding. Annealing can thus be completely eliminated, as a result of which a less expensive material can be used. The process makes possible a manufacture of balls especially for two-part ball pivots in a simpler manner and at a lower cost, and the surface finish and the material quality as well as the strength and the wear resistance are at the same time preserved or increased. As a result, the effort needed to manufacture the balls is reduced, and, moreover, the problem of the impact marks often developing on the ball surfaces during tempering is eliminated.
    Type: Application
    Filed: May 2, 2005
    Publication date: September 13, 2007
    Inventors: Jochen Kruse, Dirk Adamczyk, Reinhard Stoeterau, Jean-Paul Castanet
  • Patent number: 7244074
    Abstract: A ball and socket joint (1) is provided, for example, for a chassis bearing, with a ball (2), a pivot (3) originating from the ball (2), a housing (4) accommodating the ball, and a sealing bellows (5), which extends between the housing (4) and the pivot (3) and has a housing-side opening (6) and a pivot-side opening (7). The sealing bellows (5) has a circumferential sealing lip (8) for sealing at the pivot-side opening (7). The ball and socket joint (1) has a first guide ring (9), which guides the sealing bellows (5). The first guide ring (9) is arranged at the pivot (3). An especially favorable functional separation is achieved as a result between the guiding function and the sealing function.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: July 17, 2007
    Assignee: ZF Lemförder Metallwaren AG
    Inventors: Olaf Abels, Jürgen Gräber, Jochen Kruse, Volker Grube, Dirk Lamla, Manfred Bohne, Melanie Enkler, Metin Ersoy, Achim Möll, Thomas Rösler, Wolfgang Schmitt
  • Patent number: 7216860
    Abstract: A mount support of a force connection strut is provided manufactured from plastic/metal composite materials for a chassis of a motor vehicle. The force connection strut has an elongated basic body and a sleeve (H) passing through the basic body. The sleeve (H) has a flange (F) on at least one side and is connected to the basic body by extrusion coating with plastic at least at one of its ends.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: May 15, 2007
    Assignee: ZF Lemförder Metallwaren AG
    Inventors: Frank Budde, Stefan Schönhoff, Jochen Kruse
  • Patent number: 7171330
    Abstract: A rotation and/or tilt angle detection device for a ball and socket joint is provided wherein at least one magnet (2), especially a permanent magnet, is arranged in the joint ball (1a), wherein a display device (4) displays the magnetic field of the at least one magnet (2) by means of the magnetooptic effect. An image detection deice (10) detects the information displayed by the display device (4). A data processing unit (50) calculates the relative position of the joint ball (1a) and the ball socket (3) of the ball and socket joint on the basis of the information detected.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: January 30, 2007
    Assignee: ZF Lemförder Metallwaren AG
    Inventors: Jochen Kruse, Joachim Spratte, Michael Klank, Oliver Hagedorn, Horst Dötsch
  • Patent number: 7159880
    Abstract: A connection strut of a chassis of a passenger car or utility vehicle for the connection between the chassis and the wheel carrier, preferably an axle strut or a chassis control arm, with an elongated basic body and at least two mount supports arranged at the end for introducing and leading out forces. The basic body has a composite between a flat metal insert and a plastic structure forming the rest of the contour. The plastic structure is formed by encasement of the metal insert. The rest of the contour is defined here as the difference between the final contour of the force connection strut and the portion that is formed by the metal insert.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: January 9, 2007
    Assignee: ZF Lemförder Metallwaren AG
    Inventors: Frank Budde, Jochen Kruse, Stefan Schönhoff
  • Patent number: 7083199
    Abstract: The present invention pertains to a chassis part for connection and force transmission between a vehicle chassis of at least one wheel, consisting of fiber-reinforced plastics or plastic composite systems, preferably for a passenger car or utility vehicle. The present invention is characterized in that at least one means for measuring forces acting on the chassis parts is integrated in the plastic portions of the chassis parts.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: August 1, 2006
    Assignee: ZF Lemförder Metallwaren AG
    Inventors: Jürgen Gräber, Jochen Kruse, Joachim Spratte, Stefan Schönhoff
  • Patent number: 6879240
    Abstract: A ball-and-socket joint with integrated angle sensor for a motor vehicle, especially for the chassis of the motor vehicle is created. The ball-and-socket joint has a ball-and-socket joint housing (6) provided with a joint opening (7), a ball pivot (1) having a joint ball (2) and a pin (3), which is mounted, with its joint ball (2), rotatably and pivotably in a hollow-ball-shaped bearing surface in the ball-and-socket joint housing (6), and projects, with its pin (3), through the joint opening (7) out of the ball-and-socket joint housing (6). A two-pole field transducer (5) is provided at the end of the joint ball (2) facing away from the pin (3). The poles of the field transducer (5) are arranged on the ball surface.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: April 12, 2005
    Assignee: ZF Lenförder Metallwaren AG
    Inventor: Jochen Kruse
  • Publication number: 20050042022
    Abstract: The present invention pertains to a ball and socket joint (1), for example, for a chassis bearing, with a ball (2), a pivot (3) originating from the ball (2), a housing (4) accommodating the ball, and a sealing bellows (5), which extends between the housing (4) and the pivot (3) and has a housing-side opening (6) and a pivot-side opening (7), wherein the sealing bellows (5) has a circumferential sealing lip (8) for sealing at the pivot-side opening (7). The ball and socket joint (1) according to the present invention is characterized in that a first guide ring (9), which guides the sealing bellows (5), is arranged at the pivot (3). An especially favorable functional separation is achieved as a result between the guiding function and the sealing function.
    Type: Application
    Filed: September 29, 2004
    Publication date: February 24, 2005
    Inventors: Olaf Abels, Jurgen Graber, Jochen Kruse, Volker Grube, Dirk Lamla, Manfred Bohne, Melanie Enkler, Metin Ersoy, Achim Moll, Thomas Rosler, Wolfgang Schmitt
  • Publication number: 20050007225
    Abstract: A rotation and/or tilt angle detection device for a ball and socket joint is provided wherein at least one magnet (2), especially a permanent magnet, is arranged in the joint ball (1a), wherein a display device (4) displays the magnetic field of the at least one magnet (2) by means of the magnetooptic effect. An image detection deice (10) detects the information displayed by the display device (4). A data processing unit (50) calculates the relative position of the joint ball (1a) and the ball socket (3) of the ball and socket joint on the basis of the information detected.
    Type: Application
    Filed: August 5, 2004
    Publication date: January 13, 2005
    Inventors: Jochen Kruse, Joachim Spratte, Michael Klank, Oliver Hagedorn, Horst Dotsch
  • Publication number: 20040131418
    Abstract: The present invention pertains to the design of a force connection strut (1) of a chassis of a passenger car or utility vehicle for the non-positive connection between a chassis and a wheel carrier, preferably an axle strut or a chassis control arm, comprising an elongated basic body (G) and at least two end-side mount supports (5) for introducing and leading out forces.
    Type: Application
    Filed: July 28, 2003
    Publication date: July 8, 2004
    Inventors: Frank Budde, Jochen Kruse, Stefan Schonhoff
  • Publication number: 20040100357
    Abstract: A ball-and-socket joint with integrated angle sensor for a motor vehicle, especially for the chassis of the motor vehicle is created. The ball-and-socket joint has a ball-and-socket joint housing (6) provided with a joint opening (7), a ball pivot (1) having a joint ball (2) and a pin (3), which is mounted, with its joint ball (2), rotatably and pivotably in a hollow-ball-shaped bearing surface in the ball-and-socket joint housing (6), and projects, with its pin (3), through the joint opening (7) out of the ball-and-socket joint housing (6). A two-pole field transducer (5) is provided at the end of the joint ball (2) facing away from the pin (3). The poles of the field transducer (5) are arranged on the ball surface.
    Type: Application
    Filed: March 13, 2003
    Publication date: May 27, 2004
    Inventor: Jochen Kruse