With Intermediate Positioning Cage For Ball Patents (Class 464/145)
  • Patent number: 10962063
    Abstract: A fixed type constant velocity universal joint includes an outer joint member having a cup shape, an inner joint member, which is received in the outer joint member, and transmits torque between the outer and inner joint members through intermediation of balls while allowing angular displacement, and a shaft, which is coupled to the inner joint member so as to allow torque transmission. A recessed portion is formed in a bottom portion of the outer joint member, and an embedded stopper that enters the recessed portion of the outer joint member is mounted to a shaft end portion of the shaft opposed to the recessed portion. The embedded stopper is allowed to interfere with the recessed portion of the outer joint member at an angle that is smaller than an incorporating angle of the balls and larger than a maximum operating angle during use of the joint.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: March 30, 2021
    Assignee: NTN CORPORATION
    Inventors: Yuichi Asano, Tomoshige Kobayashi
  • Patent number: 10900552
    Abstract: A forged composite inner race for a constant velocity joint is forged from a composite preform compact including a first powder metal material and a second powder metal material. The forged composite inner race includes a plurality of ball tracks formed on an outer section of the forged composite inner race with corresponding lands between adjacent ball tracks and an axially-extending splined opening formed in an inner section of the forged composite inner race. The outer section comprises the first powder metal material in a higher concentration than the second powder metal material and the inner section comprises the second powder metal material in a higher concentration than the first powder metal material.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: January 26, 2021
    Assignee: GKN Sinter Metals, LLC
    Inventor: Timothy E. Geiman
  • Patent number: 10724607
    Abstract: Provided is a speed reduction or speed increasing apparatus where the rotational stiffness can be increased, including a housing, a first crown gear, a support unit placed radially outward of the first crown gear to support the first crown gear to be capable of wave motion and incapable of rotation with respect to the housing, a second crown gear configured to be rotatable with respect to the housing, the second crown gear having a different number of teeth from the first crown gear, the second crown gear facing the first crown gear, and a cam unit configured to incline the first crown gear with respect to the second crown gear in such a manner that the first crown gear engages with the second crown gear, and to cause the first crown gear to undergo wave motion in such a manner that the location of contact moves.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: July 28, 2020
    Assignee: THK CO., LTD.
    Inventors: Hideo Saito, Yuichi Mizutani
  • Patent number: 10533613
    Abstract: A joint includes an outer race, a first inner race installed in the outer race and a second inner race installed in the first inner race. The outer race includes an inner surface and first grooves formed on the inner surface. The first inner race includes an outer surface, an inner surface and second grooves formed on the outer surface, and a plurality of third grooves formed on the inner surface. First balls are disposed between the first grooves and the second grooves for transmitting rotation of the first inner race to the outer race. The second inner race includes an outer surface and fourth grooves formed on the outer surface. Second balls disposed between the third grooves and the fourth grooves for transmitting rotation of the second inner race to the first inner race.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: January 14, 2020
    Assignee: HYUNDAI WIA CORPORATION
    Inventor: Soo Young Moon
  • Patent number: 10508692
    Abstract: Apparatus, such as a propeller shaft, includes an outer circumferential portion or outer race to rotate as a unit with an internal shaft (serving as the propeller shaft), an inner circumferential member or inner race to rotate as a unit with an external shaft and a plurality of balls disposed between the outer race and inner race, for transmitting rotation therebetween. A sleeve rotating as a unit with the inner race includes an inside cavity for receiving the external shaft. The sleeve is coated with a coating formed on an inside circumferential surface.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: December 17, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yasutomo Mabe, Hiromichi Komai
  • Patent number: 10364849
    Abstract: In a constant-velocity joint, a center locus of a ball rolling on a first outer large-diameter portion has an arc shape having an arc center, and a center locus of the ball rolling on a second outer large-diameter portion has an arc shape having an arc center. Center loci of the ball rolling on an outer extension portion are positioned, throughout their lengths, in a region inducing a tangent line to an opening-side end portion of the center locus of the ball rolling on the second outer large-diameter portion, the region being positioned outward of the tangent line in a radial direction of the outer joint member. An opening-side end portion of the center locus of the ball rolling on the outer extension portion is positioned outward of the tangent line in the radial direction of the outer joint member.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: July 30, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Yukinobu Nishiyama, Tetsuji Kawasumi, Satoshi Kato, Keishi Kobata, Masahito Ikeo, Hideki Sugiura
  • Patent number: 10309464
    Abstract: A fixed type constant velocity universal joint includes an outer joint member having eight curved track grooves, an inner joint member having eight curved track grooves, eight torque transmission balls, and a cage configured to hold the torque transmission balls in pockets. A curvature center of each of the track grooves of the outer joint member and a curvature center of each of the track grooves of the inner joint member are offset from a joint center by an equal distance to opposite sides in the axial direction. The joint has grease sealed therein. Initial pocket gaps between the pockets and the balls each have a positive value. The grease has an initial consistency equivalent to consistency number 1 or 2, and a mixture stability of from 390 to 440.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: June 4, 2019
    Assignee: NTN CORPORATION
    Inventors: Tomoshige Kobayashi, Mika Kohara, Teruaki Fujio
  • Patent number: 10260569
    Abstract: A fixed type constant velocity universal joint of a track groove crossing type has track grooves of an inner joint member formed so as to be mirror-image symmetrical with the paired track grooves of an outer joint member with respect to a joint center plane at an operating angle of 0°. The track grooves of both the joint members each have a length corresponding to a maximum operating angle required for a rear-wheel drive shaft. Further, each axial clearance between the inner joint member and the cage is set larger than an axial clearance formed by a ball track clearance between each of balls and each track groove.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: April 16, 2019
    Assignee: NTN CORPORATION
    Inventors: Hiroyasu Hirukawa, Teruaki Fujio
  • Patent number: 10247250
    Abstract: An outer joint member includes a cutout portion that is formed at least at each corner portion on an opening side of a cup section, which is defined between a radially inner opening end portion of each of track grooves and a radially inner spherical surface portion formed between the track grooves. The cutout portion is configured to prevent a cage from interfering with the outer joint member when the cage is incorporated into the outer joint member. The cutout portion and the track grooves of the outer joint member are finished by cold-forging ironing using a single ironing punch.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: April 2, 2019
    Assignee: NTN CORPORATION
    Inventors: Tomoshige Kobayashi, Kouji Masuoka
  • Patent number: 10213868
    Abstract: A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members of medium carbon steel, the cup member being manufactured by preparing a cup member having cylindrical and bottom portions being integrally formed, and a fitting hole formed in a thick portion of the bottom portion, the shaft member being manufactured by preparing a shaft member having a fitting outer surface formed at an end portion of the shaft member to be joined to the bottom portion of the cup member, and fitting the fitting hole of the cup member to the fitting outer surface of the shaft member. The method also includes welding the cup and shaft members from an inner side of the cup member to a fitted portion between the cup and shaft members.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: February 26, 2019
    Assignee: NTN CORPORATION
    Inventors: Naoki Nakagawa, Shintaro Suzuki
  • Patent number: 10082182
    Abstract: A constant-velocity universal joint includes: an outer joint member having a plurality of outer ball grooves; an inner joint member having a plurality of inner ball grooves; a plurality of torque transmitting balls; and a ball cage. The outer ball groove and the inner ball groove respectively have a double shape, and a ratio O/H of an offset value O which is a distance between an inflection point of the outer ball groove and a line connecting centers of the torque transmitting balls in a state that the outer joint member and the inner joint member form 0 angle and a distance H between a center line of the inner joint member and a center of the torque transmitting ball in a state that the outer joint member and the inner joint member form 0 angle is within a range of 0.07 to 0.11.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: September 25, 2018
    Assignee: erae AMS Co., Ltd.
    Inventors: Hyun-Il Lee, Jang-Sun Lee, Dong-Jin Kim, Jae-Seung Jeong
  • Patent number: 9816565
    Abstract: Provided is a cage (5, 65, 95) for a constant velocity universal joint, which is formed into a ring shape with a substantially uniform thickness, including a plurality of pockets (20, 80, 110) formed in a circumferential direction of the cage (5, 65, 95), for receiving torque transmitting balls, respectively, the cage (5, 65, 95) being formed of carbon steel including 0.41 to 0.51 mass % of C, 0.10 to 0.35 mass % of Si, 0.60 to 0.90 mass % of Mn, 0.005 to 0.030 mass % of P, and 0.002 to 0.035 mass % of S, with the balance being Fe and an element inevitably remaining at the time of steelmaking and refining, the cage (5, 65, 95) being subjected to carburizing, quenching, and tempering as heat treatment, each of the plurality of pockets (20, 80, 110) having a side surface (23, 83, 113) finished after the heat treatment.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: November 14, 2017
    Assignee: NTN CORPORATION
    Inventors: Kazuhiko Yoshida, Masafumi Osugi, Kenta Yamazaki, Masato Chokyu, Rikuou Takagi
  • 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
  • Patent number: 9664236
    Abstract: A constant velocity joint includes an outer member defining a plurality of outer member ball tracks and an inner member defining a plurality of inner member ball tracks. The outer member ball tracks and the inner member ball tracks cooperate to define a plurality of uniform funnels having a uniform width along a longitudinal axis, and a plurality of diverging funnels having a diverging width along the longitudinal axis. A drive ball is disposed within each of the uniform funnels and the diverging funnels. A cage is disposed between the outer member and the inner member, and defines a plurality of windows with one of the drive balls disposed within each of the windows. The diverging funnels urge the drive balls along the longitudinal axis to pre-load the cage, while the uniform funnels do not urge the drive balls along the longitudinal axis, thereby reducing the amount of heat generated between the cage and the drive balls.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: May 30, 2017
    Assignee: STEERING SOLUTIONS IP HOLDING CORPORATION
    Inventors: Keith A. Kozlowski, Eduardo Mondragon
  • Patent number: 9656517
    Abstract: A wheel bearing includes a constant velocity universal joint and a wheel bearing. The wheel bearing is separably coupled to the constant velocity universal joint with a screw fastening structure, in which a stem section of an outer joint member of the constant velocity universal joint is fitted to an inner diameter portion of the hub wheel. Projecting portions extending in an axial direction are formed on the stem section of the outer joint member, and depressed portions having an interference with respect to the projecting portions are formed on the hub wheel. The stem section of the outer joint member is press-fitted to the hub wheel, and a shape of the projecting portions is transferred to the other, to thereby provide a projection and depression fitting structure in which the projecting portions and the depressed portions are in close contact at an entire fitting contact portion therebetween.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: May 23, 2017
    Assignee: NTN Corporation
    Inventors: Shuji Mochinaga, Takayuki Norimatsu
  • Patent number: 9581206
    Abstract: A fixed type constant velocity universal joint has an outer joint member including first track groove portions and second track groove portions. Each of the first track groove portions includes an arc part having a curvature center that is not offset in an axial direction with respect to a joint center. The first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line and adjacent to each other in the peripheral direction with inclination directions opposite to each other. Each of the second track groove portions has a different shape than the first track groove portions. Each of the first track groove portions and each of the second track groove portions are connected to each other at a position on an opening side with respect to the joint center.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: February 28, 2017
    Assignee: NTN CORPORATION
    Inventors: Kisao Yamazaki, Hiroyasu Hirukawa, Kenta Yamazaki
  • Patent number: 9464674
    Abstract: In a fixed type constant velocity universal joint, track grooves of an outer joint member include first track groove portions positioned on an interior side and second track groove portions positioned on an opening side. The first track groove portions each have an arc-shaped ball raceway center line having a curvature center that is prevented from being offset in an axial direction of the outer joint member with respect to a joint center. Planes each including at least the ball raceway center line and the joint center are inclined with respect to a joint axial line with their inclination directions alternately opposite to each other in the first track groove portions that are adjacent to each other in a peripheral direction of the outer joint member.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 11, 2016
    Assignee: NTN CORPORATION
    Inventors: Kisao Yamazaki, Kenta Yamazaki, Hiroyasu Hirukawa
  • Patent number: 9284990
    Abstract: One embodiment of a constant velocity joint has an inner race with a first set of splines. A sleeve is provided and it is engaged with the inner race. A drive nut connects the sleeve with a pinion shaft. In another embodiment, the sleeve may be provided with a boot groove. A clamping device may be used to secure a boot within the boot groove.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: March 15, 2016
    Assignee: Dana Automotive Systems Group, LLC
    Inventor: Seung Tark Oh
  • Patent number: 9168577
    Abstract: A bending machine for helically bending an elongated workpiece (T) has at least three bending rollers (2) that, being rotatable integrally with respective supporting shafts (3) with parallel axes (y), co-operate in bending the elongated workpiece (T). Each bending roller (2) is arranged to shift along its own supporting shaft (3) by way of a prismatic coupling for a limited stroke and to swing with respect to the axis of the supporting shaft (3) by way of a partially spherical body (8) forming a rotary coupling with the supporting shaft (3) in a limited amount of angular displacement according to an arc of meridian of the partially spherical body (8), so that each bending roller (2) is orientated coplanar to the elongated workpiece (T) that takes an inclined position on the basis of a desired helix pitch.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: October 27, 2015
    Assignee: CML INTERNATIONAL S.P.A.
    Inventor: Alessandro Caporusso
  • 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
  • Patent number: 8998729
    Abstract: A fixed type constant velocity universal joint has pairs of track grooves, each pair forming a wedge angle (?). The wedge angle (?) includes a wedge angle (?0) formed, when an operating angle is 0°, with respect to each of torque transmitting balls arranged in a joint center plane, and opening to the same side in an axial direction for all pairs of track grooves. Further, the pairs of track grooves are mirror-image symmetrical with each other when the operating angle is 0°.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: April 7, 2015
    Assignee: NTN Corporation
    Inventor: Hirokazu Ooba
  • Patent number: 8992335
    Abstract: A constant velocity joint including an outer race having inner and outer surfaces, the inner surface including a plurality of outer bail tracks. The constant velocity joint also includes an inner race having a plurality of inner ball tracks which correspond to the outer ball tracks, a ball cage disposed between the outer race and the inner race, a plurality of balls arranged within the ball cage and contacting the outer ball tracks and the inner ball tracks. A damping assembly is connected to the outer race.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: March 31, 2015
    Assignee: GKN Driveline North America, Inc.
    Inventor: Robert L. Cassell
  • 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
  • Publication number: 20140329608
    Abstract: In a fixed type constant velocity universal joint, track grooves of an outer joint member include first track groove portions positioned on an interior side and second track groove portions positioned on an opening side. The first track groove portions each have an arc-shaped ball raceway center line having a curvature center that is prevented from being offset in an axial direction of the outer joint member with respect to a joint center. Planes each including at least the ball raceway center line and the joint center are inclined with respect to a joint axial line with their inclination directions alternately opposite to each other in the first track groove portions that are adjacent to each other in a peripheral direction of the outer joint member.
    Type: Application
    Filed: November 16, 2012
    Publication date: November 6, 2014
    Applicant: NTN CORPORATION
    Inventors: Kisao Yamazaki, Kenta Yamazaki, Hiroyasu Hirukawa
  • Publication number: 20140309045
    Abstract: In a fixed type constant velocity universal joint, track grooves of an outer joint member include first and second track groove portions positioned on interior and open sides, respectively. Each of the first track groove portions includes an arc-shaped ball raceway center line having a curvature center prevented from being offset in an axial direction of the outer joint member with respect to a joint center. Planes each including at least the ball raceway center line and the joint center are inclined with respect to a joint axial line with their inclination directions opposite to each other in the first track groove portions, which are adjacent to each other in a peripheral direction of the outer joint member. Each of the second track groove portions includes a ball raceway center line having a straight part when being projected onto corresponding one of the planes.
    Type: Application
    Filed: October 19, 2012
    Publication date: October 16, 2014
    Applicant: NTN CORPORATION
    Inventors: Hiroyasu Hirukawa, Kenta Yamazaki, Kisao Yamazaki
  • Patent number: 8852005
    Abstract: An angled offset ball type constant velocity joint for a vehicle, which can enhance the strength of the joint by compensating for a contact surface pressure between an outer race groove and a ball while maintaining an outer diameter of the outer race by making rotation centers of the outer race and the inner race positioned to be symmetrical with respect to each other by an offset angle. The angled offset ball type constant velocity joint includes an inner race connected to an end of a shaft, an outer race installed outside the inner race, a plurality of balls for transmitting a torque of the inner race to the outer race, and a cage having windows for supporting the respective balls, wherein a rotation center of an outer race ball track is symmetrical with a rotation center of an inner race ball track by an offset angle.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: October 7, 2014
    Assignee: Hyundai Wia Corporation
    Inventor: Pil Ki Kim
  • Publication number: 20140243104
    Abstract: Track grooves of an outer joint member include first and second track groove portions positioned on interior and opening sides, respectively. Each first track groove portion has an arc shape with a curvature center at a position offset to the opening side with respect to a joint center. The first track groove portions are inclined in a peripheral direction of the outer joint member with respect to a joint axial line and adjacent to each other in the peripheral direction with their inclination directions opposite to each other. Each second track groove portion has a shape that is different than each of the first track groove portions so as to increase an effective track length at a maximum operating angle. The second track groove portions are connected to the first track groove portions at a position on the opening side with respect to the joint center.
    Type: Application
    Filed: October 22, 2012
    Publication date: August 28, 2014
    Applicant: NTN CORPORATION
    Inventors: Kenta Yamazaki, Hiroyasu Hirukawa
  • Patent number: 8814711
    Abstract: Provided is a ball type constant velocity joint for a vehicle. The ball type constant velocity joint includes an inner race installed at an end of a shaft, an outer race installed outside the inner race, a plurality of hails for transmitting rotational power of the inner race to the outer race, and a cage having windows for supporting the balls, wherein a ball track of the outer race is divided into two sections consisting of an outer race radial track and an outer race linear track contiguous to the outer race radial track, and when a joint angle is not created, a rotation center of the outer race radial track and a rotation center of the inner race linear track are positioned at the same point on a vertical center axis and have the same vertical offset amount.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: August 26, 2014
    Assignee: Hyundai Wia Corporation
    Inventor: Pil Ki Kim
  • Patent number: 8808098
    Abstract: A constant velocity joint including an outer race including a plurality of outer race ball grooves on an internal surface thereof; an inner race arranged inside the outer race and including a plurality of inner race ball grooves on a peripheral surface thereof; a plurality of balls respectively received in the outer and inner race ball grooves for transmitting a torque between the outer race and the inner race; and a cage arranged between the outer and inner races and including a plurality of window portions that respectively receive balls in a circumferential direction thereof. On at least one of a plurality of groove wall protrusions that are configured by sidewall surfaces of the inner race ball grooves adjoining cutouts are respectively formed on axially opposite sides of an inner race on a peripheral side of the inner race.
    Type: Grant
    Filed: July 4, 2011
    Date of Patent: August 19, 2014
    Assignee: JTEKT Corporation
    Inventors: Yuri Handa, Satoshi Suzuki
  • Publication number: 20140221108
    Abstract: A constant velocity universal includes an outer joint member having an inner peripheral surface including track grooves that are formed at a plurality of positions on the inner peripheral surface and extend in an axial direction, and an inner joint member having an outer peripheral surface including track grooves that are formed at a plurality of positions on the outer peripheral surface and in pairs with the track grooves of the outer joint member, the track grooves extending in the axial direction. Balls are interposed between the track grooves of the outer and inner joint members. A track chamfer is provided at each boundary portion between each of the track grooves and the inner peripheral surface of the outer joint member, and a track chamfer is provided at each boundary portion between each of the track grooves and the outer peripheral surface of the inner joint member.
    Type: Application
    Filed: August 22, 2012
    Publication date: August 7, 2014
    Inventor: Kenji Yamada
  • Publication number: 20140213374
    Abstract: A high angle constant velocity joint having an outer joint member defined by inner and outer surfaces; an inner joint member having an outer surface, wherein the inner surface of the outer joint member and the outer surface of the inner joint define tracks, including a front track and a rear track for a joint articulation; a cage disposed between the outer joint member and the inner joint member and positioned adjacent to the tracks; a plurality of torque transmitting bails arranged within the cage and contacting at least one of the front track and the rear track; and a high angle sealing member secured to the outer surface of the outer joint member and providing a fluid barrier to the inner surface of the outer joint member.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 31, 2014
    Inventors: Robert Leslie Cassell, Michael James Miller, Sam Junior D'Angelo, Hans Wormsbaecher
  • Patent number: 8771086
    Abstract: A fixed type constant velocity universal joint comprises a ball and a lubricating grease sealed therein. A surface roughness of the ball is set to Ra 0.15 ?m or less and a surface roughness of a counterpart surface on which the ball rolls is set to be higher than the surface roughness of the ball. An additive composition of the lubricating grease comprises a base oil, a diurea compound, molybdenum dithiocarbamate, zinc dialkyldithiophosphate, melamine cyanurate, molybdenum disulfide, and calcium salt of alkylaromatic sulfonic acid.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: July 8, 2014
    Assignee: NTN Corporation
    Inventors: Kazuhiko Yoshida, Keisuke Sone, Mika Kohara
  • Patent number: 8771092
    Abstract: A fixed type constant velocity universal joint is configured such that an axial offset amount of a curvature center of each track groove of an outer joint member and an axial offset amount of a curvature center of each track groove of an inner joint member are zero. Track grooves of the outer joint member are formed alternately in a circumferential direction to be inclined in mutually opposite directions with respect to an axis, and track grooves of the inner joint member are formed alternately in the circumferential direction to be inclined in mutually opposite directions with respect to the axis. An outer surface of the inner joint member is formed into a spherical surface which is held in slide-contact with an inner spherical surface of a cage. An inner surface of the outer joint member is formed into a cylindrical surface.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 8, 2014
    Assignee: NTN Corporation
    Inventor: Teruaki Fujio
  • Publication number: 20140090917
    Abstract: A constant velocity joint includes an outer housing and an inner race disposed inside the outer housing and spaced therefrom. The outer housing and inner race are respectively rotatable about a first and second rotation axes, and moveable relative to one another to change an angle between the rotation axes. A cage, disposed between the outer housing and the inner race, has cage windows defined therethrough. A plurality of balls, each retained in a corresponding cage window roll along corresponding outer housing grooves and inner race grooves, respectively defined on an inner surface of the outer housing and an outer surface of the inner race. Rotation of one of the outer housing and the inner race about their respective rotation axis, causes rotation of the other. A cooling member disposed on the outer housing contacts at least a portion of its outer surface. Powertrains and vehicles are also disclosed.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: BOMBARDIER RECREATIONAL PRODUCTS INC.
    Inventor: Charles Despres-Nadeau
  • Patent number: 8684849
    Abstract: An eight-ball fixed type constant velocity universal joint of an undercut free type is capable of increasing a torque capacity at high operating angles while securing durability at low operating angles. When a distance between a center of a track groove and a center of a ball is denoted by Rt, and when an axial distance between the center of the track groove and a joint center plane is denoted by F, a ratio R1 of F to Rt is set to fall within a range of 0.061?R1?0.087. When a radial offset amount, which is a distance between the center of the track groove and a joint center axial line is denoted by fr, a ratio R3 of fr to Rt is set to fall within a range of 0.07?R3?0.19. When an effective cured-layer depth with Hv 513 is denoted by Di and the diameter of the ball is denoted by d, a bottom surface of a track groove of an inner joint member includes a cured layer with an effective cured-layer depth ratio Di/d of at least 0.111 or more.
    Type: Grant
    Filed: November 25, 2010
    Date of Patent: April 1, 2014
    Assignee: NTN Corporation
    Inventors: Keisuke Sone, Hirokazu Ooba, Kazuhiko Yoshida, Kiyohiro Itou
  • Patent number: 8684850
    Abstract: A constant velocity universal joint has track shapes which facilitate quality control on a forging die set, securing higher durability through securement of a stable contact state of forging-molded tracks and finishing-processed tracks with respect to balls. At least one of each of track grooves of an outer joint member and each of track grooves of an inner joint member is formed by cold-forging finishing. A track groove bottom side of the at least one of each of the track grooves is formed into a Gothic arch shape in horizontal cross-section, and a track groove opening side of the at least one of each of the track grooves is are each formed into an elliptical shape in horizontal cross-section.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: April 1, 2014
    Assignee: NTN Corporation
    Inventors: Yoshinori Terasaka, Tomoshige Kobayashi, Kisao Yamazaki, Minoru Ishijima
  • Publication number: 20140080612
    Abstract: A constant velocity universal joint smoothly operates under load and during speed rotation, and also suppresses heat generation and has enhanced durability. An offset in an axial direction between a center of curvature of each of track grooves and a center of curvature of an inner surface of an outer joint member, and an offset in the axial direction between a center of curvature of each of track grooves and a center of curvature of an outer surface of an inner joint member are each set to zero. The track grooves of the outer and inner joint members are each inclined with respect to an axial line. A circumferential length of each of pockets of a cage is set so that two pockets allow balls to be assembled therein at one time under a state in which the two pockets are exposed.
    Type: Application
    Filed: April 27, 2012
    Publication date: March 20, 2014
    Applicant: NTN CORPORATION
    Inventor: Teruaki Fujio
  • Publication number: 20140080613
    Abstract: An outer joint member has first and second track groove portions located respectively on depth and opening sides. The first track groove portions each have a circular-arc ball-raceway center line having a curvature center that is not offset in an axial direction with respect to a joint center. The second track groove portions each have a ball-raceway center line including a straight part to increase an effective track length at a maximum operating angle. Track grooves of an inner joint member each have a ball-raceway center line that is mirror-image symmetrical with a ball-raceway center line of the paired track groove of the outer joint member with respect to a plane passing through the joint center at an operating angle of 0°.
    Type: Application
    Filed: May 7, 2012
    Publication date: March 20, 2014
    Inventors: Hiroyasu Hirukawa, Kenta Yamazaki
  • Publication number: 20140073441
    Abstract: A fixed type constant velocity universal joint has track grooves of an outer joint member including first and second track groove portions located on depth and opening sides, respectively. The first track groove portions each have a circular-arc part having a curvature center that is not offset in an axial direction with respect to a joint center, are inclined in a circumferential direction with respect to a joint axial line, and are adjacent to each other in the circumferential direction with their inclination directions opposite to each other. The second track groove portions have a different shape than the first track groove portions to increase an effective track length with respect to a maximum operating angle. The first and second track groove portions are connected respectively to each other on the opening side with respect to the joint center.
    Type: Application
    Filed: May 2, 2012
    Publication date: March 13, 2014
    Inventors: Kenta Yamazaki, Kisao Yamazaki, Teruaki Fujio
  • Publication number: 20130316838
    Abstract: A joint in the form of a counter track joint is disclosed that comprises a joint outer part with first outer ball tracks and second outer ball tracks; a joint inner part with first inner ball tracks and second inner ball tracks; wherein first aperture angles are respectively formed between tangents to contact points of a ball with the first outer ball track and with the first inner ball track, and second aperture angles are respectively formed between tangents to contact points between a ball with the second outer ball track and with the second inner ball track. The first aperture angles of the first track pairs open towards a first side of the joint, and the second aperture angles of the second track pairs open towards a second side of the joint., Outer axial play is provided between the joint outer part and the ball cage. Inner axial play is provided between the ball cage and the joint inner part. Axial play permits relative axial displacement of the joint inner part with respect to the joint outer part.
    Type: Application
    Filed: November 26, 2010
    Publication date: November 28, 2013
    Applicant: GKN Driveline International GmbH
    Inventors: Wolfgang Hildebrandt, Orkan Eryilmaz
  • Patent number: 8555508
    Abstract: A method for producing an internal or external part of a torque-transmitting opposed track joint, such as a fixed constant velocity ball joint, in which approximately axially parallel extending track bases of the joint tracks have curvatures which deviate in their axial course from the curvatures of the ball contact lines. The method is characterized in that in a first step a perform with approximately axially parallel extending grooves having lateral flanks is produced, and in a second step the perform is formed into a final joint part whereby the lateral flanks of the grooves are just partially formed to achieve the ball contact lines.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: October 15, 2013
    Assignee: Neumayer Tekfor Holding GmbH
    Inventors: Volker Szentmihalyi, Mathias Lutz, Ekkehard Koerner
  • Publication number: 20130267332
    Abstract: Provided is a fixed type constant velocity universal joint which suppresses heat generation under high load and in high speed rotation, has a higher durability, and involves less torque loss. The fixed type constant velocity universal joint includes eight or twelve torque transmitting balls (27) arranged in ball tracks formed of pairs of track grooves (22) of an outer joint member (23) and track grooves (25) of an inner joint member (26), respectively. A center of curvature (O1) of each of the track grooves (22) of the outer joint member (23) and a center of curvature (O2) of each of the track grooves (25) of the inner joint member (26) have an axial offset of zero.
    Type: Application
    Filed: December 6, 2011
    Publication date: October 10, 2013
    Inventor: Teruaki Fujio
  • Patent number: 8545337
    Abstract: A fixed type constant velocity universal joint of an eight-ball undercut-free type has improved torque capacity at high operating angle while ensuring durability at low operating angle. Centers of a track groove (32) of an outer joint member and a track groove (35) of an inner joint member are respectively separated from a center plane (P) toward axially different sides, and are offset away from a joint center axis (X) to a radially opposite side relative to grooves (35). When Rt represents a distance between a center of a ball (37) and the center of groove (32), and F represents an axial distance between plane (P) and the center of groove (32), a ratio R1 between F and Rt is 0.061?R1?0.087. When fr represents a radial offset amount as a distance between axis (X) and the center of groove (32), a ratio R3 between fr and Rt is 0.07?R3?0.19.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: October 1, 2013
    Assignee: NTN Corporation
    Inventors: Keisuke Sone, Hirokazu Ooba, Kazuhiko Yoshida, Kiyohiro Itou
  • Publication number: 20130237331
    Abstract: An arrangement with a joint and a gearwheel body for a transmission is provided in which the joint is a constant velocity joint arranged at least partially in an interior space enclosed by the gearwheel body. The constant velocity joint has inner and outer hub tracks and a bearing cage arranged to maintain an essentially constant control angle between tangential ball contact points with the inner and outer tracks while the bearing cage holds the balls in a plane.
    Type: Application
    Filed: April 24, 2013
    Publication date: September 12, 2013
    Applicant: Neumayer Tekfor Holding GmbH
    Inventors: Alexander EBERT, Martin LEHMANN, Tobias ROSER, Thomas ETZOLD, Tim BENZ
  • Patent number: 8529360
    Abstract: An outer joint member for a fixed type constant velocity universal joint contributes to the reduction of the number of man-hours through the reduction of the number of processes after a forging process, to an increase in yield, and to the reduction of manufacturing cost. The outer joint member is made of machine-structural carbon steel. The portions of the outer joint member that are finished by cold forging are track grooves, radially inner spherical-surface portions, a cup-inlet chamfer, track chamfers, track-inlet chamfers, a part except for a boot fixing portion on a radially outer surface of the cup section, and a center hole at an end surface of the shaft section.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: September 10, 2013
    Assignee: NTN Corporation
    Inventors: Masazumi Kobayashi, Kisao Yamazaki, Minoru Ishijima
  • Patent number: 8523687
    Abstract: A joint, particularly a constant velocity ball joint, including an inner hub and an outer hub, which hubs exhibit respective inner and outer ball tracks which are associated with each other in pairs, and further including balls disposed in the pairs of associated inner and outer ball tracks, the tracks being configured such that at the contact points of the balls with the ball tracks the tangential planes form an angle of inclination, and the ball tracks exhibiting at any given time a continually changing curvature, as a result of which the angle of inclination is constant.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: September 3, 2013
    Assignee: Neumayer Tekfor Holding GmbH
    Inventors: Mathias Lutz, Thomas Gregor
  • Patent number: 8469829
    Abstract: A fixed type constant velocity universal joint includes an outer joint member including an inner surface in which a plurality of track grooves are formed, an inner joint member including an outer surface in which a plurality of track grooves are formed, a plurality of balls between the track grooves of the outer joint member and the inner joint member so as to transmit torque, and a cage having pockets for housing the balls, and being between the outer joint member and the inner joint member. At a maximum operating angle, the balls roll up to track-groove-opening-end portions of the outer joint member. Each of the track grooves of the outer joint member includes a hardened layer formed so as to extend from a track-groove deep side to the track-groove-opening-end portion, the hardened layer being thinner at the track-groove-opening-end portion compared with the other portions.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: June 25, 2013
    Assignee: NTN Corporation
    Inventors: Masazumi Kobayashi, Kenji Yamada
  • Publication number: 20130130811
    Abstract: Provided is a sliding ball type constant velocity joint for a vehicle, which can minimize vehicle vibration by forming a track groove pair by two track grooves of an outer race and an inner race to reduce a contact area between the inner race and a cage, and can reduce the manufacturing cost by reducing the number of processing steps of the cage by forming the number of windows of the cage to half that of balls.
    Type: Application
    Filed: December 22, 2011
    Publication date: May 23, 2013
    Inventor: PIL KI KIM
  • Publication number: 20130123027
    Abstract: Provided is a ball type constant velocity joint for a vehicle. The ball type constant velocity joint includes an inner race installed at an end of a shaft, an outer race installed outside the inner race, a plurality of hails for transmitting rotational power of the inner race to the outer race, and a cage having windows for supporting the balls, wherein a ball track of the outer race is divided into two sections consisting of an outer race radial track and an outer race linear track contiguous to the outer race radial track, and when a joint angle is not created, a rotation center of the outer race radial track and a rotation center of the inner race linear track are positioned at the same point on a vertical center axis and have the same vertical offset amount.
    Type: Application
    Filed: December 15, 2011
    Publication date: May 16, 2013
    Inventor: Pil Ki Kim
  • Publication number: 20130116056
    Abstract: An angled offset ball type constant velocity joint for a vehicle, which can enhance the strength of the joint by compensating for a contact surface pressure between an outer race groove and a ball while maintaining an outer diameter of the outer race by making rotation centers of the outer race and the inner race positioned to be symmetrical with respect to each other by an offset angle. The angled offset ball type constant velocity joint includes an inner race connected to an end of a shaft, an outer race installed outside the inner race, a plurality of balls for transmitting a torque of the inner race to the outer race, and a cage having windows for supporting the respective balls, wherein a rotation center of an outer race ball track is symmetrical with a rotation center of an inner race ball track by an offset angle.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Inventor: PIL KI KIM