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).
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Patent number: 9302341Abstract: 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: GrantFiled: April 7, 2008Date of Patent: April 5, 2016Assignee: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson, Kenneth S. Dobson
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Patent number: 8432659Abstract: 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: GrantFiled: April 30, 2012Date of Patent: April 30, 2013Assignee: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth
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Patent number: 8378548Abstract: 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: GrantFiled: April 30, 2010Date of Patent: February 19, 2013Assignee: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Jeffrey W. Richardson
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Patent number: 8293080Abstract: 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: GrantFiled: June 16, 2010Date of Patent: October 23, 2012Assignee: Illinois Tool Works Inc.Inventors: Michael P. Barnard, Hieyoung W. Oh, Jeffrey W. Richardson
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Publication number: 20120212875Abstract: 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: ApplicationFiled: April 30, 2012Publication date: August 23, 2012Applicant: Illinois Tool Works, Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth
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Patent number: 8199453Abstract: 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: GrantFiled: September 8, 2005Date of Patent: June 12, 2012Assignee: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth
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Patent number: 8189317Abstract: 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: GrantFiled: April 7, 2008Date of Patent: May 29, 2012Assignee: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson
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Patent number: 8169766Abstract: 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: GrantFiled: May 24, 2011Date of Patent: May 1, 2012Assignee: Illinois Tool Works, Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth
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Patent number: 8107260Abstract: 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: GrantFiled: November 10, 2008Date of Patent: January 31, 2012Assignee: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth
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Publication number: 20110216466Abstract: 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: ApplicationFiled: May 24, 2011Publication date: September 8, 2011Applicant: ILLINOIS TOOL WORKS, INC.Inventors: Hieyoung W. Oh, Adam H. Willwerth
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Publication number: 20110062818Abstract: 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: ApplicationFiled: April 30, 2010Publication date: March 17, 2011Applicant: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Jeffrey W. Richardson
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Patent number: 7846279Abstract: 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: GrantFiled: January 21, 2005Date of Patent: December 7, 2010Assignee: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Jeffrey W. Richarson
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Publication number: 20100252420Abstract: 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: ApplicationFiled: June 16, 2010Publication date: October 7, 2010Applicant: ILLINOIS TOOL WORKS INC.Inventors: Michael P. Barnard, Hieyoung W. Oh, Jeffrey W. Richardson
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Publication number: 20090129043Abstract: 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: ApplicationFiled: November 10, 2008Publication date: May 21, 2009Inventors: Hieyoung W. Oh, Adam H. Willwerth
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Patent number: 7528513Abstract: 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: GrantFiled: June 19, 2006Date of Patent: May 5, 2009Assignee: Illinois Tool Works Inc.Inventor: Hieyoung W. Oh
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Publication number: 20090045694Abstract: A brush for the stator of an electric motor has microfibers establishing both mechanical and non-mechanical electrical connections to the commutator.Type: ApplicationFiled: July 15, 2008Publication date: February 19, 2009Inventors: Hieyoung W. Oh, Jeffrey W. Richardson
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Publication number: 20080272101Abstract: 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: ApplicationFiled: April 7, 2008Publication date: November 6, 2008Applicant: Illinois Tool Works Inc.Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson, Kenneth S. Dobson
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Publication number: 20080258576Abstract: 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: ApplicationFiled: April 7, 2008Publication date: October 23, 2008Inventors: Hieyoung W. Oh, Adam H. Willwerth, Jeffrey W. Richardson
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Publication number: 20070278093Abstract: 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: ApplicationFiled: June 2, 2006Publication date: December 6, 2007Inventors: Michael P. Barnard, Hieyoung W. Oh, Jeffrey W. Richardson
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Patent number: 7261146Abstract: 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: GrantFiled: October 30, 2003Date of Patent: August 28, 2007Assignee: Illinois Tool Works IncInventor: Hieyoung W. Oh