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公开(公告)号:US11095197B2
公开(公告)日:2021-08-17
申请号:US16176013
申请日:2018-10-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: John S. Agapiou , John D. Campbell , Frederick W. Rhoads , Hongliang Wang , James G. Schroth , Thomas A. Perry
Abstract: A modular stator includes a first stator module and a second stator module. The first stator module includes a plurality of first coil end regions and a plurality of first junctions. The second stator module includes a plurality of second coil end regions and a plurality of second junctions. The first stator module and the second stator module are joined at the plurality of first junctions and the plurality of second junctions.
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公开(公告)号:US20210031309A1
公开(公告)日:2021-02-04
申请号:US16525738
申请日:2019-07-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Megan E. McGovern , Teresa J. Rinker , Ryan C. Sekol , Sean R. Wagner , Ronald M. Lesperance , James G. Schroth , Michael J. Bland , Diana M. Wegner
Abstract: A computer software product adapted for use in a weld inspection system is executed by a processor and is stored in an electronic storage medium of the weld inspection system adapted to facilitate the inspection of a weld of a work product. The computer software product includes a first module and a combination module. The first module is configured to transform first and second raw thermal images, associated with respective first and second heat pulses of at least a portion of the work product having the weld, into respective first and second binary images. The combination module is configured to transform the first and second binary images into a combined binary image for the reduction of noise.
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公开(公告)号:US20200368969A1
公开(公告)日:2020-11-26
申请号:US16420643
申请日:2019-05-23
Applicant: GM Global Technology Operations LLC
Inventor: Hongliang Wang , James G. Schroth , Matthew T. Vanderlip , Edwin H. Chang
IPC: B29C64/379 , B29C64/112 , B29C64/135
Abstract: A method for manufacturing an electro-mechanical device includes creating a plurality of substrates using a first additive manufacturing process. Each of the substrates includes a polymeric material. The substrates include a first substrate and a second substrate. The first substrate includes a first main body and defines a protrusion extending from the first main body. The second substrate includes a second main body and a recess defined in the second main body. The method includes coupling the first substrate to the second substrate by inserting the protrusion into the recess such that the protrusion elastically deforms to an elastically averaged configuration. The protrusion and the recess together form an elastic averaging coupling. The method includes creating a plurality of electrically conductive components using a second additive manufacturing process and then coupling the electrically conductive components to at least one of the substrates.
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公开(公告)号:US20200287429A1
公开(公告)日:2020-09-10
申请号:US16297010
申请日:2019-03-08
Applicant: GM Global Technology Operations LLC
Inventor: John S. Agapiou , Hongliang Wang , James G. Schroth
Abstract: A rotor stack assembly includes multiple plates each including multiple elongated slots each oriented radially outward from a longitudinal central axis of each plate toward an outer perimeter wall of the plate. Multiple openings are each positioned proximate to one of the slots and directed outwardly through the outer perimeter wall. Multiple runners individually extend through the plate and individually open into one of opposed ends of each of the slots. Multiple bars of a conductive material are each extended through aligned ones of the slots of each of the multiple plates.
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公开(公告)号:US10682723B2
公开(公告)日:2020-06-16
申请号:US15097821
申请日:2016-04-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: David R. Sigler , Blair E. Carlson , James G. Schroth , David S. Yang , Anil K. Sachdev
IPC: B23K11/20 , B23K11/11 , B23K11/30 , B23K103/20
Abstract: A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy workpiece, and a welding electrode used therein. In one step of the method a workpiece stack-up is provided. The workpiece stack-up includes a steel workpiece and an aluminum or aluminum alloy workpiece. Another step of the method involves contacting the aluminum or aluminum alloy workpiece with a weld face of the welding electrode. The welding electrode has a body and an insert. The insert is composed of a material having an electrical resistivity that is greater than an electrical resistivity of the material of the body. The weld face has a first section defined by a surface of the insert and has a second section defined by a surface of the body. Both the first and second sections make surface-to-surface contact with the aluminum or aluminum alloy workpiece amid resistance spot welding.
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公开(公告)号:US20190006920A1
公开(公告)日:2019-01-03
申请号:US15636745
申请日:2017-06-29
Applicant: GM Global Technology Operations LLC
Inventor: John S. Agapiou , Thomas A. Perry , James G. Schroth , Hongliang Wang , Michael P. Balogh
Abstract: A rotor for an induction motor includes a first shorting end ring, a second shorting end ring, and a plurality of conductor bars. Each conductor bar has a first end and a second end and is coated with an electrically conductive material. The first end of each conductor bar is in electrical and mechanical contact with the first shorting end ring, and the second end of each conductor bar is in electrical and mechanical contact with the second shorting end ring. The conductive material is disposed between each conductor bar and the respective shorting end rings.
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公开(公告)号:US10166627B2
公开(公告)日:2019-01-01
申请号:US14503969
申请日:2014-10-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: David R. Sigler , James G. Schroth , Blair E. Carlson , Yelena Myasnikova , David Yang
Abstract: A resistance spot welding method may involve spot welding a workpiece stack-up that includes a steel workpiece and an aluminum alloy workpiece that overlap one another to provide a faying interface. A pair of opposed welding electrodes are pressed against opposite sides of the workpiece stack-up with one welding electrode contacting the aluminum alloy workpiece and the other welding electrode contacting the steel workpiece. The welding electrodes are constructed so that, when an electrical current is passed between the electrodes and through the workpiece stack-up, the electrical current has a greater current density in the steel workpiece than in the aluminum alloy workpiece to thereby concentrate heat within a smaller zone in the steel workpiece. Concentrating heat within a smaller zone in the steel workpiece is believed to modify the solidification behavior of the resultant molten aluminum alloy weld pool in a desirable way.
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公开(公告)号:US20180272457A1
公开(公告)日:2018-09-27
申请号:US15992748
申请日:2018-05-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: David Yang , David R. Sigler , Blair E. Carlson , James G. Schroth , Michael J. Karagoulis
IPC: B23K11/20 , B23K35/02 , B23K11/11 , B23K11/30 , B23K103/20
CPC classification number: B23K11/20 , B23K11/115 , B23K11/3009 , B23K11/3018 , B23K35/0205 , B23K35/0261 , B23K2103/20
Abstract: A method of spot welding a workpiece stack-up that includes a steel workpiece and an aluminum alloy workpiece involves passing an electrical current through the workpieces and between welding electrodes that are constructed to affect the current density of the electrical current. The welding electrodes, more specifically, are constructed to render the density of the electrical current greater in the steel workpiece than in the aluminum alloy workpiece. This difference in current densities can be accomplished by passing, at least initially, the electrical current between a weld face of the welding electrode in contact with the steel workpiece and a perimeter region of a weld face of the welding electrode in contact with the aluminum alloy workpiece.
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公开(公告)号:US10036083B2
公开(公告)日:2018-07-31
申请号:US14789134
申请日:2015-07-01
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: James G. Schroth , Thomas A. Perry , Chen Zhou
CPC classification number: C22C9/00 , B23K9/042 , B23K20/165 , B23K35/302
Abstract: A method of pre-placing a reaction material onto a surface of a metal workpiece substrate involves the use of oscillating wire arc welding. The method involves depositing and adhering the reaction material from a consumable electrode rod. In doing so, the reaction material can be deposited at any time before the metal workpiece substrate is ready for joining by reaction metallurgical joining, and the size and shape of the reaction material deposit can be more easily controlled.
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公开(公告)号:US20150333606A1
公开(公告)日:2015-11-19
申请号:US14281187
申请日:2014-05-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor: Michael D. Hanna , James G. Schroth , John S. Agapiou , John C. Morgante
CPC classification number: H02K15/0031 , H02K15/0012 , H02K15/024 , H02K17/165 , Y10T29/49014
Abstract: A method of forming a rotor includes inserting a conductor bar into a slot defined by a lamination stack to define a gap between the conductor bar and the lamination stack. The method further includes, after inserting, swelling the conductor bar within the slot to fill the gap and form the rotor. A rotor is also disclosed.
Abstract translation: 形成转子的方法包括将导体棒插入到由叠片堆叠限定的狭槽中,以在导体条和叠片之间形成间隙。 该方法还包括在插入之后使导体条在槽内膨胀以填充间隙并形成转子。 还公开了一种转子。
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