Patents by Inventor Seung Tark Oh

Seung Tark Oh 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: 9790996
    Abstract: A vehicle joint has a drive sleeve, a pinion shaft and a drive nut. The sleeve has a vent hole, a first set of splines and a first set of venting grooves. The pinion shaft has a second set of splines engaged with the first set of splines. A fluid gap radially outboard of the engaged spines extends the length of the engaged splines. A second set of venting grooves is engaged with the first set of venting grooves. The pinion shaft also has a first set of threads. The drive nut has a second set of threads engaged with the first set of threads. The drive nut also has a radial aperture extending through the drive nut. The first vent hole is in fluid connection with the radial aperture through some of the features described above.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: October 17, 2017
    Assignee: Dana Automotive Systems Group, LLC
    Inventors: Seth A. Metzger, Seung Tark Oh, Jeffrey A. Dutkiewicz
  • Patent number: 9777777
    Abstract: A fluid path for a plug-in constant velocity joint assembly between a boot sleeve and a boot. The boot sleeve has a first end portion and a second end portion. The first end portion is disposed against and is in driving engagement with an inner race. The boot sleeve second end portion defines an inner ridge, a sleeve channel and an outer ridge. The boot has a first end portion and a second end portion. The second end portion comprises an inner seal where the inner seal comprises an inner axial groove and an outer axial groove. A fluid path is formed between the inner ridge and the boot, between inner axial groove and the sleeve, in the sleeve channel, between the outer axial groove and the sleeve and between the outer ridge and the boot.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: October 3, 2017
    Assignee: Dana Automotive Systems Group, LLC
    Inventor: Seung Tark Oh
  • Patent number: 9670963
    Abstract: A constant velocity joint has an inner race and a sleeve. The sleeve connects with the inner race. In addition, the sleeve connects with a pinion shaft via splines. A nut attaches to the sleeve and also the shaft. The nut/shaft attachment is through threads.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: June 6, 2017
    Assignee: Dana Automotive Systems Group, LLC
    Inventors: Seth A. Metzger, Seung Tark Oh, Jeffrey A. Dutkiewicz, Andrew Charles Shupe, Joseph H. Bradfield
  • Publication number: 20170122379
    Abstract: A constant velocity joint boot assembly with a boot can having a first end portion connected to an outer race and a second end portion cantilevered from the outer race. The second end portion has a planar portion extending from the first end portion at an angle. A radially outward extending end extends from the planar portion. A boot has a first end and a second end. The first end has an inner surface that is directly connected to an inner surface of the planar portion of the boot can. A sleeve has one end portion connected to an inner surface of an inner race with complementary splines and a second end portion extending axially away from the inner race. The boot has a lower portion engaged with the sleeve.
    Type: Application
    Filed: January 12, 2017
    Publication date: May 4, 2017
    Inventor: Seung Tark Oh
  • Patent number: 9574617
    Abstract: A constant velocity joint boot assembly has a boot can connected to an outer race of the joint. The boot can receives a portion of a boot. The thickness of the boot may be changed in different areas to result in different boot performances. A sleeve is connected to the inner race. A portion of the sleeve may have a complementary shape to a portion of the boot, also to result in different boot performance. A clamp may be located over a portion of the boot to secure it to the sleeve.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: February 21, 2017
    Assignee: Dana Automotive Systems Group, LLC
    Inventor: Seung Tark Oh
  • Publication number: 20170030415
    Abstract: A constant velocity joint assembly (20) includes an outer race (22) having a plurality of outer tracks (42) formed in an inner surface thereof and an inner race having a plurality of inner tracks (54) formed in an outer surface thereof. A cage (26) is disposed between the inner race and the outer race. A plurality of torque transferring elements (28) are disposed in the cage. Each torque transferring element contacts one of the outer tracks of the plurality of outer tracks and one of the inner tracks of the plurality of inner tracks. A drive sleeve (30) is separated from the plurality of torque transferring elements by the inner race. Also, the drive sleeve is in driving engagement with the inner race. A stopper portion (74) is attached to the drive sleeve. The stopper portion comprising a portion that reduces in thickness toward an outer end thereof.
    Type: Application
    Filed: March 30, 2015
    Publication date: February 2, 2017
    Inventors: Seung Tark Oh, Dilson da Silveira Tavares
  • Publication number: 20160319882
    Abstract: A vehicle joint has a drive sleeve, a pinion shaft and a drive nut. The sleeve has a vent hole, a first set of splines and a first set of venting grooves. The pinion shaft has a second set of splines engaged with the first set of splines. A fluid gap radially outboard of the engaged spines extends the length of the engaged splines. A second set of venting grooves is engaged with the first set of venting grooves. The pinion shaft also has a first set of threads. The drive nut has a second set of threads engaged with the first set of threads. The drive nut also has a radial aperture extending through the drive nut. The first vent hole is in fluid connection with the radial aperture through some of the features described above.
    Type: Application
    Filed: November 24, 2014
    Publication date: November 3, 2016
    Applicant: DANA AUTOMOTIVE SYSTEMS GROUP, LLC
    Inventors: SETH A. METZGER, SEUNG TARK OH, JEFFREY A. DUTKIEWICZ
  • Publication number: 20160290409
    Abstract: A constant velocity joint has an inner race and a sleeve. The sleeve connects with the inner race. In addition, the sleeve connects with a pinion shaft via splines. A nut attaches to the sleeve and also the shaft. The nut/shaft attachment is through threads.
    Type: Application
    Filed: December 16, 2014
    Publication date: October 6, 2016
    Applicant: DANA AUTOMOTIVE SYSTEMS GROUP, LLC
    Inventors: SETH A. METZGER, SEUNG TARK OH, JEFFREY A. DUTKIEWICZ, ANDREW CHARLES SHUPE, JOSEPH H. BRADFIELD
  • 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
  • Publication number: 20160053818
    Abstract: A fluid path for a plug-in constant velocity joint assembly between a boot sleeve and a boot. The boot sleeve has a first end portion and a second end portion. The first end portion is disposed against and is in driving engagement with an inner race. The boot sleeve second end portion defines an inner ridge, a sleeve channel and an outer ridge. The boot has a first end portion and a second end portion. The second end portion comprises an inner seal where the inner seal comprises an inner axial groove and an outer axial groove. A fluid path is formed between the inner ridge and the boot, between inner axial groove and the sleeve, in the sleeve channel, between the outer axial groove and the sleeve and between the outer ridge and the boot.
    Type: Application
    Filed: October 30, 2015
    Publication date: February 25, 2016
    Inventor: Seung Tark Oh
  • Publication number: 20160025151
    Abstract: A constant velocity joint boot assembly has a boot can connected to an outer race of the joint. The boot can receives a portion of a boot. The thickness of the boot may be changed in different areas to result in different boot performances. A sleeve is connected to the inner race. A portion of the sleeve may have a complementary shape to a portion of the boot, also to result in different boot performance. A clamp may be located over a portion of the boot to secure it to the sleeve.
    Type: Application
    Filed: May 4, 2015
    Publication date: January 28, 2016
    Inventor: Seung Tark Oh
  • Patent number: 9206858
    Abstract: A plug-in constant velocity joint has an outer race and an inner race. The inner race has a plurality of splines and inner tracks. A cage is located between the outer race and the inner race. A boot sleeve is disposed against the inner race and has a first end portion, a middle portion, and a second end portion. The first end portion defines a race seat and is in contact with an end of the inner race. The second end portion defines an inner ridge, a sleeve channel and an outer ridge. A boot assembly is coupled to the outer race and comprises a boot retainer and a boot. A plug-in stub shaft is engaged with the boot sleeve and both are drivingly engaged into the inner race.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: December 8, 2015
    Assignee: Dana Automotives Systems Group, LLC
    Inventor: Seung Tark Oh
  • Publication number: 20140349771
    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: Application
    Filed: May 20, 2014
    Publication date: November 27, 2014
    Inventor: Seung Tark Oh
  • Patent number: 8834279
    Abstract: A shaft assembly includes a first shaft. The first shaft has a first annular crest and a second annular crest. The first annular crest and the second annular crest are separated by an inclined surface. The second annular crest includes an axially extending surface attached to an end of the inclined surface. A boot is secured to the shaft. The boot includes a channel and a diaphragm portion disposed adjacent an end of the channel. The channel includes an inlet portion, a partially helical portion, and an outlet portion formed in an inner surface of the boot. The diaphragm portion is provided over the inclined surface and includes a lip which contacts the second annular crest.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: September 16, 2014
    Assignee: Dana Automotive Systems Group, LLC
    Inventor: Seung Tark Oh
  • Publication number: 20140121029
    Abstract: A plug-in constant velocity joint has an outer race and an inner race. The inner race has a plurality of splines and inner tracks. A cage is located between the outer race and the inner race. A boot sleeve is disposed against the inner race and has a first end portion, a middle portion, and a second end portion. The first end portion defines a race seat and is in contact with an end of the inner race. The second end portion defines an inner ridge, a sleeve channel and an outer ridge. A boot assembly is coupled to the outer race and comprises a boot retainer and a boot. A plug-in stub shaft is engaged with the boot sleeve and both are drivingly engaged into the inner race.
    Type: Application
    Filed: October 16, 2013
    Publication date: May 1, 2014
    Inventor: Seung Tark Oh
  • Patent number: 8641538
    Abstract: A double offset constant velocity joint is provided. The constant velocity joint includes an outer element, an inner element, an annular element, and a plurality of torque transferring elements. The annular element has a first spherical outer surface, a second spherical outer surface, a spherical inner surface, and a plurality of perforations formed therethrough. The first spherical outer surface and the spherical inner surface have a center common with a spherical outer surface of the inner element. The second spherical outer surface has a center different from a joint pivot point and the first spherical outer surface. The second spherical outer surface has a diameter complementary to a diameter of the inner surface of the outer element. The annular element is disposed between the inner element and the outer element.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: February 4, 2014
    Assignee: Dana Automotive Systems Group, LLC
    Inventor: Seung Tark Oh
  • Patent number: 8616987
    Abstract: A constant velocity joint for a drive system includes: an outer joint member and an inner joint member, each having a plurality of ball grooves, the ball grooves consisting of a first group of grooves of a skewed groove shape with a first skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of the outer and inner joint members, and a second group of grooves of a skewed groove shape with a second skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of the outer and inner joint members, the second skew angle less than the first skew angle. In addition to the differentiated skew angles, the contact angles of the balls in the first and second group of grooves may also be differentiated.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: December 31, 2013
    Assignee: Hyundai Wia Corporation
    Inventors: Seung Tark Oh, Tae Hong Kim
  • Patent number: 8608578
    Abstract: A constant velocity joint comprises: a hollow housing having a plurality of guide grooves; a tripod having a plurality of trunnions positioned in the guide grooves; and a roller assembly disposed on each trunnion. The outer roller includes a convex outer surface, the convex outer surface having a first radius (Rry) seen from a cross section taken in an orthogonal direction of the outer roller, the convex outer surface having a second radius (Rrx) seen from a cross section taken along the central axis of the outer roller, in which the center of the second radius (Rrx) is displaced outwardly from the center of the first radius (Rry), and the second radius (Rrx) is shorter than the first radius (Rry).
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: December 17, 2013
    Assignee: Hyundai Wia Corporation
    Inventor: Seung Tark Oh
  • Publication number: 20130252747
    Abstract: A constant velocity joint for a drive system includes: an outer joint member and an inner joint member, each having a plurality of ball grooves, the ball grooves consisting of a first group of grooves of a skewed groove shape with a first skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of the outer and inner joint members, and a second group of grooves of a skewed groove shape with a second skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of the outer and inner joint members, the second skew angle less than the first skew angle. In addition to the differentiated skew angles, the contact angles of the balls in the first and second group of grooves may also be differentiated.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 26, 2013
    Applicant: HYUNDAI WIA CORPORATION
    Inventors: Seung Tark Oh, Tae Hong Kim
  • Publication number: 20130244798
    Abstract: A shaft assembly is provided. The shaft assembly includes a first shaft. The first shaft has a first annular crest and a second annular crest. The first annular crest and the second annular crest are separated by an inclined surface. The second annular crest includes an axially extending surface attached to an end of the inclined surface. A boot is secured to the shaft. The boot includes a channel and a diaphragm portion disposed adjacent an end of the channel. The channel includes an inlet portion, a partially helical portion, and an outlet portion formed in an inner surface of the boot. The diaphragm portion is provided over the inclined surface and includes a lip which contacts the second annular crest.
    Type: Application
    Filed: March 8, 2013
    Publication date: September 19, 2013
    Applicant: Dana Automotive Systems Group, LLC
    Inventor: Seung Tark Oh