Patents by Inventor Hieyoung W. Oh

Hieyoung W. 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: 9302341
    Abstract: A contact tip is provided for wire welding applications. The contact tip includes one or more conductive brushes fitted to a conductive contact tip body. Fibers of the brush extend into a passageway traversed by welding wire in operation. Electrical current is transmitted to the brush assembly and through the brush fibers to the welding wire. The fibers may transmit the current directly and also may enhance contact of the welding wire with one or more walls of the contact tip. Improved electrical contact and weld quality are obtained.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: April 5, 2016
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson, Kenneth S. Dobson
  • Patent number: 8432659
    Abstract: A shaft current control brush ring assembly includes a cup and a brush ring assembly secured within the cup. The cup is secured to a motor faceplate, within a recess formed in the faceplate by interference fit, or by means of a clamp attached to the faceplate. A slinger can be associated with the brush ring assembly.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: April 30, 2013
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth
  • Patent number: 8378548
    Abstract: The present approaches provide a current control assembly with a rotor and a stator. The stator includes a drain for channeling contaminants away from the assembly and the rotor includes one or more slots that rotate with the rotor for outwardly slinging the contaminants. In one embodiment, a system is provided that includes the current control assembly having a first ring including a first shaft opening and a first discharge opening. The current control assembly also includes a second ring having a second shaft opening and a second discharge opening, wherein the first and second rings rotate relative to one another, and the first and second discharge openings align with one another to discharge a contaminant. The current control assembly further includes a plurality of conductive filaments configured to transfer current between the current control assembly and a shaft.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: February 19, 2013
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Jeffrey W. Richardson
  • Patent number: 8293080
    Abstract: A conductive contact ring for an electroplating or electrodeposition process on a cylindrical surface includes a frame defining an opening through which the object can be passed and an array of electrically conductive fibers spanning the opening. The frame is electrically conductive and is connected to a DC power source in the process. Two or more contact rings can be used in a process to provide consistent electrical contact with the surface sliding therethrough. A single contact ring can have first and second groups of filaments spaced from each other along the axial length of the surface.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: October 23, 2012
    Assignee: Illinois Tool Works Inc.
    Inventors: Michael P. Barnard, Hieyoung W. Oh, Jeffrey W. Richardson
  • Publication number: 20120212875
    Abstract: A shaft current control brush ring assembly includes a cup and a brush ring assembly secured within the cup. The cup is secured to a motor faceplate, within a recess formed in the faceplate by interference fit, or by means of a clamp attached to the faceplate. A slinger can be associated with the brush ring assembly.
    Type: Application
    Filed: April 30, 2012
    Publication date: August 23, 2012
    Applicant: Illinois Tool Works, Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth
  • Patent number: 8199453
    Abstract: A shaft current control brush ring assembly includes a cup and a brush ring assembly secured within the cup. The cup is secured to a motor faceplate, within a recess formed in the faceplate by interference fit, or by means of a clamp attached to the faceplate. A slinger can be associated with the brush ring assembly.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: June 12, 2012
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth
  • Patent number: 8189317
    Abstract: An improved grounding brush system for mitigating electrical current on a moving object such as a rotating shaft includes an electrically conductive layer applied to the object and associated with a brush assembly for conducting electrical current from the moving object to ground.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: May 29, 2012
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson
  • Patent number: 8169766
    Abstract: A shaft current control brush ring assembly includes a cup and a brush ring assembly secured within the cup. The cup is secured to a motor faceplate, within a recess formed in the faceplate by interference fit, or by means of a clamp attached to the faceplate. A slinger can be associated with the brush ring assembly.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: May 1, 2012
    Assignee: Illinois Tool Works, Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth
  • Patent number: 8107260
    Abstract: An EMI shield for a movable component such as an antenna of an electronic device includes a microfiber ring of densely packed microfibers extending from an EMI shielding housing across the space defined by an opening in the housing for the movable component. Multiple microfiber rings can be used separated by spacers, and an environmental shield can be included.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: January 31, 2012
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth
  • Publication number: 20110216466
    Abstract: A shaft current control brush ring assembly includes a cup and a brush ring assembly secured within the cup. The cup is secured to a motor faceplate, within a recess formed in the faceplate by interference fit, or by means of a clamp attached to the faceplate. A slinger can be associated with the brush ring assembly.
    Type: Application
    Filed: May 24, 2011
    Publication date: September 8, 2011
    Applicant: ILLINOIS TOOL WORKS, INC.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth
  • Publication number: 20110062818
    Abstract: The present approaches provide a current control assembly with a rotor and a stator. The stator includes a drain for channeling contaminants away from the assembly and the rotor includes one or more slots that rotate with the rotor for outwardly slinging the contaminants. In one embodiment, a system is provided that includes the current control assembly having a first ring including a first shaft opening and a first discharge opening. The current control assembly also includes a second ring having a second shaft opening and a second discharge opening, wherein the first and second rings rotate relative to one another, and the first and second discharge openings align with one another to discharge a contaminant. The current control assembly further includes a plurality of conductive filaments configured to transfer current between the current control assembly and a shaft.
    Type: Application
    Filed: April 30, 2010
    Publication date: March 17, 2011
    Applicant: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Jeffrey W. Richardson
  • Patent number: 7846279
    Abstract: A static control device suitable for printers, copiers and the like is disclosed with a manufacturing method therefor. A carrier strip of non-metallic, electrically conductive material, such as plastic, is provided with a plurality of spaced bundles of electrically conductive filaments. The bundles extend beyond the carrier strip, in close proximity to media transported along a media path. In the presence of electrical fields, the filaments induce ionization, and establish a conductive path for charges on the media to the carrier strip for grounding. A strand is attached across the bundles, for improving the structural integrity of the device.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: December 7, 2010
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Jeffrey W. Richarson
  • Publication number: 20100252420
    Abstract: A conductive contact ring for an electroplating or electrodeposition process on a cylindrical surface includes a frame defining an opening through which the object can be passed and an array of electrically conductive fibers spanning the opening. The frame is electrically conductive and is connected to a DC power source in the process. Two or more contact rings can be used in a process to provide consistent electrical contact with the surface sliding therethrough. A single contact ring can have first and second groups of filaments spaced from each other along the axial length of the surface.
    Type: Application
    Filed: June 16, 2010
    Publication date: October 7, 2010
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Michael P. Barnard, Hieyoung W. Oh, Jeffrey W. Richardson
  • Publication number: 20090129043
    Abstract: An EMI shield for a movable component such as an antenna of an electronic device includes a microfiber ring of densely packed microfibers extending from an EMI shielding housing across the space defined by an opening in the housing for the movable component. Multiple microfiber rings can be used separated by spacers, and an environmental shield can be included.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 21, 2009
    Inventors: Hieyoung W. Oh, Adam H. Willwerth
  • Patent number: 7528513
    Abstract: A shaft current control brush ring assembly includes a channel and a brush ring assembly secured within the channel. A drain is provided to direct liquids and contaminants away from said brush ring assembly.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: May 5, 2009
    Assignee: Illinois Tool Works Inc.
    Inventor: Hieyoung W. Oh
  • Publication number: 20090045694
    Abstract: A brush for the stator of an electric motor has microfibers establishing both mechanical and non-mechanical electrical connections to the commutator.
    Type: Application
    Filed: July 15, 2008
    Publication date: February 19, 2009
    Inventors: Hieyoung W. Oh, Jeffrey W. Richardson
  • Publication number: 20080272101
    Abstract: A contact tip is provided for wire welding applications. The contact tip includes one or more conductive brushes fitted to a conductive contact tip body. Fibers of the brush extend into a passageway traversed by welding wire in operation. Electrical current is transmitted to the brush assembly and through the brush fibers to the welding wire. The fibers may transmit the current directly and also may enhance contact of the welding wire with one or more walls of the contact tip. Improved electrical contact and weld quality are obtained.
    Type: Application
    Filed: April 7, 2008
    Publication date: November 6, 2008
    Applicant: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson, Kenneth S. Dobson
  • Publication number: 20080258576
    Abstract: An improved grounding brush system for mitigating electrical current on a moving object such as a rotating shaft includes an electrically conductive layer applied to the object and associated with a brush assembly for conducting electrical current from the moving object to ground.
    Type: Application
    Filed: April 7, 2008
    Publication date: October 23, 2008
    Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson
  • Publication number: 20070278093
    Abstract: A conductive contact ring for an electroplating or electrodeposition process on a cylindrical surface includes a frame defining an opening through which the object can be passed and an array of electrically conductive fibers spanning the opening. The frame is electrically conductive and is connected to a DC power source in the process. Two or more contact rings can be used in a process to provide consistent electrical contact with the surface sliding therethrough. A single contact ring can have first and second groups of filaments spaced from each other along the axial length of the surface.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 6, 2007
    Inventors: Michael P. Barnard, Hieyoung W. Oh, Jeffrey W. Richardson
  • Patent number: 7261146
    Abstract: A heat-equalizing device is provided suitable to transfer heat from hooter areas to colder areas, and is particularly suitable for equalizing surface temperatures along a heated structure. The heat-equalizing device includes graphite fibers embedded in insulating material. The graphite fibers form a contact surface extending over and against the heated surface. The contact surface can be flat or curved as necessary for proper operation on the heated surface.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: August 28, 2007
    Assignee: Illinois Tool Works Inc
    Inventor: Hieyoung W. Oh