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: 20240035520Abstract: 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: ApplicationFiled: December 11, 2020Publication date: February 1, 2024Inventors: Stephan Maucher, Thomas Weckerling, Rolf Cremerius, Ida Benner, Anna Gremmelmaier, Hans-Jürgen Post
-
Patent number: 11796008Abstract: 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: GrantFiled: July 5, 2018Date of Patent: October 24, 2023Assignee: GKN Driveline International GmbHInventors: Ida Benner, Rolf Cremerius, Anna Gremmelmaier, Wolfgang Hildebrandt, Stephan Maucher, Hans-Jürgen Post, Thomas Weckerling
-
Publication number: 20210178482Abstract: 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: ApplicationFiled: May 24, 2018Publication date: June 17, 2021Inventors: Rolf Cremerius, Thomas Weckerling, Ümit Aydin, Galina Ermakova
-
Publication number: 20210140488Abstract: 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: ApplicationFiled: July 5, 2018Publication date: May 13, 2021Inventors: Ida Benner, Rolf Cremerius, Anna Gremmelmaier, Wolfgang Hildebrandt, Stephan Maucher, Hans-Jürgen Post, Thomas Weckerling
-
Patent number: 9810269Abstract: 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: GrantFiled: March 27, 2014Date of Patent: November 7, 2017Assignee: GKN Driveline International GmbHInventors: Wolfgang Hildebrandt, Thomas Weckerling, Stephan Maucher, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
-
Publication number: 20160053817Abstract: 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: ApplicationFiled: March 27, 2014Publication date: February 25, 2016Inventors: Wolfgang Hildebrandt, Thomas Weckerling, Stephan Maucher, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
-
Patent number: 9133887Abstract: 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 thType: GrantFiled: March 26, 2013Date of Patent: September 15, 2015Assignee: GKN Driveline International GmbHInventors: Wolfgang Hildebrandt, Stephan Maucher, Thomas Weckerling, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
-
Publication number: 20150072795Abstract: 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 thType: ApplicationFiled: March 26, 2013Publication date: March 12, 2015Inventors: Wolfgang Hildebrandt, Stephan Maucher, Thomas Weckerling, Rolf Cremerius, Ida Benner, Hans-Jurgen Post, Anna Gremmelmaier
-
Patent number: 8899090Abstract: 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: GrantFiled: June 14, 2010Date of Patent: December 2, 2014Assignee: GKN Driveline International GmbHInventors: Rolf Cremerius, Rainer Adolfs
-
Patent number: 7857682Abstract: 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: GrantFiled: December 3, 2004Date of Patent: December 28, 2010Assignee: GKN Driveline International GmbHInventor: Rolf Cremerius
-
Publication number: 20100242564Abstract: 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: ApplicationFiled: June 14, 2010Publication date: September 30, 2010Inventors: Rolf Cremerius, Rainer Adolfs
-
Patent number: 7758431Abstract: 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: GrantFiled: September 10, 2004Date of Patent: July 20, 2010Assignee: GKN Driveline International GmbHInventors: Rolf Cremerius, Rainer Adolfs
-
Patent number: 7735210Abstract: 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: GrantFiled: December 3, 2004Date of Patent: June 15, 2010Assignee: GKN Driveline International, GmbHInventor: Rolf Cremerius
-
Publication number: 20090060406Abstract: 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: ApplicationFiled: September 10, 2004Publication date: March 5, 2009Inventors: Rolf Cremerius, Rainer Adolfs
-
Publication number: 20080314877Abstract: 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: ApplicationFiled: November 5, 2004Publication date: December 25, 2008Inventors: Rolf Cremerius, Thomas Pullen
-
Publication number: 20080245777Abstract: 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: ApplicationFiled: September 10, 2004Publication date: October 9, 2008Inventors: Rolf Cremerius, Thomas Pullen
-
Publication number: 20080223172Abstract: 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: ApplicationFiled: September 10, 2004Publication date: September 18, 2008Inventors: Thomas Pullen, Rolf Cremerius
-
Publication number: 20070104550Abstract: 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: ApplicationFiled: December 3, 2004Publication date: May 10, 2007Inventor: Rolf Cremerius
-
Publication number: 20060283016Abstract: 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: ApplicationFiled: December 3, 2004Publication date: December 21, 2006Inventor: Rolf Cremerius
-
Publication number: 20040041007Abstract: 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: ApplicationFiled: July 3, 2003Publication date: March 4, 2004Inventor: Rolf Cremerius