Patents by Inventor Adam H. Willwerth

Adam H. Willwerth 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
  • 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
  • Patent number: 7652866
    Abstract: A flexible conductive static control brush assembly includes first and second brushes disposed on a common backing strip. Each brush includes a plurality of filaments disposed inwardly from opposite edges of the backing strip. Bands overlie outer end portions of the filaments adjacent edges of the backing strip, with the bands covering only a portion of each filament length. The backing strip includes parting lines for tearing to remove an intermediate portion of the backing strip between the brushes to expose the filaments.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: January 26, 2010
    Assignee: Illinois Tool Works
    Inventors: Michael P. Barnard, Adam H. Willwerth, Jeffrey W. Richardson, Mario E. Blais, Linda Heaward
  • 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
  • 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
  • Patent number: 7339777
    Abstract: A system is provided for dissipating electrical charges that build on a rotatable shaft extending from an electrically-grounded motor housing or rotating shafts conductively linked to components that create and electrical charge, such as wind turbine blades, power generator turbines, and the like. The system includes a frame defining a central opening wherein the rotatable shaft is positioned with the central opening, a first grounding fiber secured within the frame, and a fiber clamp positioned with the frame. The fiber clamp acts to urge the first grounding fiber toward the central opening. The system may also include a mounting bracket having a frame mounting channel, wherein a portion of the frame is securely retained within the frame mounting channel, and an installation guide positioned on the mounting bracket. The installation guide may be configured to properly align the frame and the first grounding fiber relative to the rotatable motor shaft.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: March 4, 2008
    Assignee: Illinois Tool Works Inc
    Inventors: Michael P. Barnard, Adam H. Willwerth, Jeffrey W. Richardson