Patents by Inventor Rolf Cremerius

Rolf Cremerius 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).

  • Publication number: 20240035520
    Abstract: A counter track joint comprises an outer joint part, an inner joint part, first pairs of tracks widening towards the opening side of the outer joint part when the counter track joint is aligned, and second pairs of tracks widening towards the connecting side of the outer joint part when the counter track joint is aligned; a ball in each of the first and second pairs of tracks; a ball cage having circumferentially distributed cage windows each receiving one of the balls, wherein one of the outer ball track group and the inner ball track group is hardened and hard machined, and the other of the outer ball track group and the inner ball track group is soft finished and subsequently hardened. A method of manufacturing a counter track joint is provided.
    Type: Application
    Filed: December 11, 2020
    Publication date: February 1, 2024
    Inventors: Stephan Maucher, Thomas Weckerling, Rolf Cremerius, Ida Benner, Anna Gremmelmaier, Hans-Jürgen Post
  • Patent number: 11796008
    Abstract: A constant velocity joint comprises an outer joint part with outer ball tracks, an inner joint part with inner ball tracks, wherein respectively an outer ball track and an inner ball track form a pair of tracks with each other; a torque-transmitting ball in each pair of tracks; a ball cage in which the torque-transmitting balls are received; wherein a first articulation angle range is defined comprising articulation angles of less than twenty degrees, and a second articulation angle range comprising articulation angles greater than twenty degrees; wherein an opening angle within the first articulation angle range increases as the articulation angle (?) increases, and wherein a first mean opening angle increase of the first articulation angle range is greater than a second mean opening angle increase of the second articulation angle range.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: October 24, 2023
    Assignee: GKN Driveline International GmbH
    Inventors: Ida Benner, Rolf Cremerius, Anna Gremmelmaier, Wolfgang Hildebrandt, Stephan Maucher, Hans-Jürgen Post, Thomas Weckerling
  • Publication number: 20210178482
    Abstract: A blank for a conduit arrangement includes an annular conduit having a first end and a second end, which is formed by a channel surrounded by a wall. The conduit arrangement has an axis of rotation and the conduit extends in a circumferential direction over an angle of more than 360 degrees about the axis of rotation and forms at least one wind turn. The axis of rotation is arranged perpendicularly to a base surface, the wall having first surfaces which are arranged at a first angle of at least 30 degrees relative to the base surface or in which a surface normal forms at least one second angle of 0 to 60 degrees with respect to the base surface. First partial surfaces of the walls, which face one another in an axial direction, of adjacent turns are arranged spaced apart from one another. The blank is produced by an additive manufacturing process.
    Type: Application
    Filed: May 24, 2018
    Publication date: June 17, 2021
    Inventors: Rolf Cremerius, Thomas Weckerling, Ümit Aydin, Galina Ermakova
  • Publication number: 20210140488
    Abstract: A constant velocity joint comprises an outer joint part with outer ball tracks, an inner joint part with inner ball tracks, wherein respectively an outer ball track and an inner ball track form a pair of tracks with each other; a torque-transmitting ball in each pair of tracks; a ball cage in which the torque-transmitting balls are received; wherein a first articulation angle range is defined comprising articulation angles of less than twenty degrees, and a second articulation angle range comprising articulation angles greater than twenty degrees; wherein an opening angle within the first articulation angle range increases as the articulation angle (?) increases, and wherein a first mean opening angle increase of the first articulation angle range is greater than a second mean opening angle increase of the second articulation angle range.
    Type: Application
    Filed: July 5, 2018
    Publication date: May 13, 2021
    Inventors: Ida Benner, Rolf Cremerius, Anna Gremmelmaier, Wolfgang Hildebrandt, Stephan Maucher, Hans-Jürgen Post, Thomas Weckerling
  • Patent number: 9810269
    Abstract: A constant velocity joint comprises an outer joint part with a longitudinal axis and first and second outer ball tracks. The outer joint part comprises an attachment side and an aperture side. An inner joint part has a longitudinal axis and first and second inner ball tracks. with a torque transmitting ball 14 in each pair of tracks, and a ball cage 15 with cage windows 18 in which the balls 14 are held. In each angular position of the constant velocity joint 11 an opening angle is enclosed between an outer tangent and an inner tangent at the ball. At least one of the first and second pairs of tracks is designed such that, within a small articulation angle range comprising at least the joint central plane, at at least an articulation angle, an opening angle amounts to zero, and within a greater articulation angle range, an aperture-side opening angle of a first pair of tracks widens in the opposite axial direction relative to the aperture-side opening angle of a second pair of tracks.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: November 7, 2017
    Assignee: GKN Driveline International GmbH
    Inventors: Wolfgang Hildebrandt, Thomas Weckerling, Stephan Maucher, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
  • Publication number: 20160053817
    Abstract: A constant velocity joint comprises an outer joint part with a longitudinal axis and first and second outer ball tracks. The outer joint part comprises an attachment side and an aperture side. An inner joint part has a longitudinal axis and first and second inner ball tracks. with a torque transmitting ball 14 in each pair of tracks, and a ball cage 15 with cage windows 18 in which the balls 14 are held. In each angular position of the constant velocity joint 11 an opening angle is enclosed between an outer tangent and an inner tangent at the ball. At least one of the first and second pairs of tracks is designed such that, within a small articulation angle range comprising at least the joint central plane, at at least an articulation angle, an opening angle amounts to zero, and within a greater articulation angle range, an aperture-side opening angle of a first pair of tracks widens in the opposite axial direction relative to the aperture-side opening angle of a second pair of tracks.
    Type: Application
    Filed: March 27, 2014
    Publication date: February 25, 2016
    Inventors: Wolfgang Hildebrandt, Thomas Weckerling, Stephan Maucher, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
  • Patent number: 9133887
    Abstract: A constant velocity joint comprises an outer joint part with a longitudinal axis and outer ball tracks, wherein the outer joint part comprises an attachment side and an aperture side; an inner joint part with a longitudinal axis and inner ball tracks; a torque transmitting ball in each pair of tracks; a ball cage with cage windows in which the balls are held, wherein in each angular position of the constant velocity joint there is enclosed an opening angle ? between an outer tangent T and an inner tangent T? at the ball, wherein at least one of the pairs of tracks is designed such that, inside a small articulation angle range, which comprises at least the joint central plane EM, in at least one joint articulation angle ?, an opening angle ? amounts to zero, and that inside a larger articulation angle range, an aperture side opening angle ? of a ball moving towards the aperture side of the outer joint part and an attachment side opening angle ? of a ball moving at the same joint articulation angle ? towards th
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: September 15, 2015
    Assignee: GKN Driveline International GmbH
    Inventors: Wolfgang Hildebrandt, Stephan Maucher, Thomas Weckerling, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
  • Publication number: 20150072795
    Abstract: A constant velocity joint comprises an outer joint part with a longitudinal axis and outer ball tracks, wherein the outer joint part comprises an attachment side and an aperture side; an inner joint part with a longitudinal axis and inner ball tracks; a torque transmitting ball in each pair of tracks; a ball cage with cage windows in which the balls are held, wherein in each angular position of the constant velocity joint there is enclosed an opening angle ? between an outer tangent T and an inner tangent T? at the ball, wherein at least one of the pairs of tracks is designed such that, inside a small articulation angle range, which comprises at least the joint central plane EM, in at least one joint articulation angle ?, an opening angle ? amounts to zero, and that inside a larger articulation angle range, an aperture side opening angle ? of a ball moving towards the aperture side of the outer joint part and an attachment side opening angle ? of a ball moving at the same joint articulation angle ? towards th
    Type: Application
    Filed: March 26, 2013
    Publication date: March 12, 2015
    Inventors: Wolfgang Hildebrandt, Stephan Maucher, Thomas Weckerling, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
  • Patent number: 8899090
    Abstract: A cage having a plurality of cutouts for receiving rolling bodies of a joint includes a quenched and tempered steel, and the entire cage has a substantially uniform ductility over its cross section without surface hardening. The cage may be produced by forming a closed base body, cutting out a plurality of cutouts, fully hardening the cage by heating and subsequently quenching the cage, and tempering the cage.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: December 2, 2014
    Assignee: GKN Driveline International GmbH
    Inventors: Rolf Cremerius, Rainer Adolfs
  • Patent number: 7857682
    Abstract: A process machining inner joint parts (11) of constant velocity universal ball joints, which inner joint parts (11) comprise a longitudinal axis (A) and at least one guiding face by which the inner joint part (11) is continuously angularly movably guided in a ball cage, and which comprise a plurality of ball tracks (12) which are distributed around the circumference of the guiding face and which divide the guiding face into a corresponding plurality of guiding webs (13) and in which torque transmitting balls can be held so as to be longitudinally displaceable. One ball track (12) and at least one guiding web (13) are machined simultaneously.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: December 28, 2010
    Assignee: GKN Driveline International GmbH
    Inventor: Rolf Cremerius
  • Publication number: 20100242564
    Abstract: A cage having a plurality of cutouts for receiving rolling bodies of a joint, wherein the cage comprises a quenched and tempered steel, and the entire cage has a substantially uniform ductility over its cross section without surface hardening.
    Type: Application
    Filed: June 14, 2010
    Publication date: September 30, 2010
    Inventors: Rolf Cremerius, Rainer Adolfs
  • Patent number: 7758431
    Abstract: A cage having a plurality of cutouts for receiving rolling bodies of a joint, wherein the cage comprises a quenched and tempered steel, and the entire cage has a substantially uniform ductility over its cross section without surface hardening.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: July 20, 2010
    Assignee: GKN Driveline International GmbH
    Inventors: Rolf Cremerius, Rainer Adolfs
  • Patent number: 7735210
    Abstract: A process of machining outer joint parts (11) and inner joint parts (21) of constant velocity universal ball joints, which outer joint parts (11) and inner joint parts (21) each comprise a longitudinal axis and a number of ball tracks (12), wherein the ball tracks are each arranged circumferentially in pairs (121, 122), whose central track lines are positioned in planes (E1, E2, E3, E4) extending parallel relative to one another, wherein the pairs of ball tracks (12) are machined by rotating disc tools (16) whose axes of rotation (R) perpendicularly intersect the respective longitudinal axis at a distance from one another and are held and guided coaxially relative to one another.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: June 15, 2010
    Assignee: GKN Driveline International, GmbH
    Inventor: Rolf Cremerius
  • Publication number: 20090060406
    Abstract: Cage (1) having a plurality of cutouts (2) for receiving rolling bodies (3) of a joint (4), characterized in that the entire cage (1) has a substantially uniform ductility. The invention also proposes a way of producing the cage (1), in which the cage (1) is fully hardened and tempered. Also described are particular application areas in the automotive sector.
    Type: Application
    Filed: September 10, 2004
    Publication date: March 5, 2009
    Inventors: Rolf Cremerius, Rainer Adolfs
  • Publication number: 20080314877
    Abstract: The invention describes a process for producing a weld seam (1) in hardenable steel (2) having a material thickness (3) without secondary heating, comprising at least the following steps: a) positioning a welding electrode (4) with respect to a weld line (5); b) applying a voltage; c) supplying a plasma gas (6); d) forming an arc (7); e) melting the steel (2) in the vicinity of the weld line (5) over the entire material thickness (3). This process is preferably used to join components for torque transmission in motor vehicles.
    Type: Application
    Filed: November 5, 2004
    Publication date: December 25, 2008
    Inventors: Rolf Cremerius, Thomas Pullen
  • Publication number: 20080245777
    Abstract: Process for producing a weld seam (1) in hardenable steel, comprising at least the following steps: a) positioning a laser beam (2) with respect to a weld line (3); b) heating subregions (4) of the steel by means of the laser beam (2), with the laser beam (2) being guided along a welding track (5) which is longer than the weld line (3); c) cooling the heated subregions (4) of the steel. This welding process produces crack-free welded joins without the need for secondary heating of the hardenable steel. A preferred application area for weld seams of this type is to join components of the drive train of automobiles.
    Type: Application
    Filed: September 10, 2004
    Publication date: October 9, 2008
    Inventors: Rolf Cremerius, Thomas Pullen
  • Publication number: 20080223172
    Abstract: The invention relates to a method for fixing at least one balancing weight (1) to at least one point (2) on a hollow shaft (3), whereby the balancing weight(s) (1) is or are soldered to said point(s) (2). The invention also relates to hollow shafts (3) that have been produced according to said method and to a drive system (13) for a vehicle (14). The method facilitates the production of especially light, heavy-duty drive shafts for motor vehicles.
    Type: Application
    Filed: September 10, 2004
    Publication date: September 18, 2008
    Inventors: Thomas Pullen, Rolf Cremerius
  • Publication number: 20070104550
    Abstract: A process of machining outer joint parts (11) and inner joint parts (21) of constant velocity universal ball joints, which outer joint parts (11) and inner joint parts (21) each comprise a longitudinal axis and a number of ball tracks (12), wherein the ball tracks are each arranged circumferentially in pairs (121, 122), whose central track lines are positioned in planes (E1, E2, E3, E4) extending parallel relative to one another, wherein the pairs of ball tracks (12) are machined by rotating disc tools (16) whose axes of rotation (R) perpendicularly intersect the respective longitudinal axis at a distance from one another and are held and guided coaxially relative to one another.
    Type: Application
    Filed: December 3, 2004
    Publication date: May 10, 2007
    Inventor: Rolf Cremerius
  • Publication number: 20060283016
    Abstract: A process machining inner joint parts (11) of constant velocity universal ball joints, which inner joint parts (11) comprise a longitudinal axis (A) and at least one guiding face by which the inner joint part (11) is continuously angularly movably guided in a ball cage, and which comprise a plurality of ball tracks (12) which are distributed around the circumference of the guiding face and which divide the guiding face into a corresponding plurality of guiding webs (13) and in which torque transmitting balls can be held so as to be longitudinally displaceable. One ball track (12) and at least one guiding web (13) are machined simultaneously.
    Type: Application
    Filed: December 3, 2004
    Publication date: December 21, 2006
    Inventor: Rolf Cremerius
  • Publication number: 20040041007
    Abstract: A method of producing metal clamping rings which serve to secure elastic sleeves on components which are movable relative to one another, such as, for securing convoluted boots on joints and intermediate shafts of motor vehicle driveshafts. The method includes producing a strip portion from plate metal, which strip portion comprises strip ends which match and complement one another and which are delimited so as to be undercut-free in the longitudinal direction; bending the strip portion so as to render same round and fixing same so as to form a cylindrical ring with abutting strip ends; and welding the strip ends so that they form a clamping ring.
    Type: Application
    Filed: July 3, 2003
    Publication date: March 4, 2004
    Inventor: Rolf Cremerius