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21.发明授权公开(公告)号：US11701738B2
公开(公告)日：2023-07-18
申请号：US17036786
申请日：2020-09-29
Inventor： Nannan Chen , Joshua L. Solomon , Hui-Ping Wang , Zixuan Wan , Blair E. Carlson , Paulina G. Torres Guzman
IPC: B23K26/24 , B23K26/70 , B23K101/00
CPC classification number: B23K26/24 , B23K26/70 , B23K2101/006
Abstract: A laser welded assembly and method of making. The laser welded assembly includes a first work piece having a thickness (T1) defined between an external surface and a faying surface; a second work piece having a thickness (T2) defined between an external surface and a faying surface of the second work piece; a weld seam having a core fusion zone extending from the external surface of the first work piece through the faying interface and at least partially into the thickness (T2) of the second work piece; and a protruding fusion zone extending laterally from the core fusion zone adjacent to the external surface of the first work piece. The protruding fusion zone may be formed by post-heating or concurrently with the core fusion zone.
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公开(公告)号：US11358328B2
公开(公告)日：2022-06-14
申请号：US16355186
申请日：2019-03-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David A. Okonski , Ryan Gergely , Blair E. Carlson , William R. Rodgers
IPC: B29C64/165 , B33Y70/00 , B29C64/295 , B29C64/209 , B29C70/38 , B33Y10/00 , C08J7/04 , B29K77/00 , B29K67/00 , B29K267/00
Abstract: A composite fusion filament is disclosed that includes a polymer encasement and one or more mesogenic reinforcement bodies contained within the polymer encasement. The polymer encasement is comprised of a thermoplastic polymer, which has a melting temperature, and each of the one or more mesogenic reinforcement bodies is comprised of a thermotropic liquid crystal polymer, which has a clearing temperature. The melting temperature of the thermoplastic polymer included in the polymer encasement is less than the clearing temperature of the thermotropic liquid crystal polymer included in the one or more mesogenic reinforcement bodies. Additionally, the thermotropic liquid crystal polymer of each mesogenic reinforcement body has a plurality of organized crystalline fibrils that are aligned lengthwise along a longitudinal axis of the polymer encasement. A method of using the composite fusion filament to form a bond with a substrate that includes a thermoplastic polymer is also disclosed.
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公开(公告)号：US10953497B2
公开(公告)日：2021-03-23
申请号：US16085283
申请日：2016-11-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Hui-Ping Wang , Yu Pan , Blair E. Carlson , Joshua L. Solomon , William P. Payne , David Yang , Wu Tao
IPC: B23K26/60 , B23K26/26 , B23K26/322 , B23K26/082 , B23K26/244 , B23K101/00 , B23K101/18 , B23K101/34 , B23K103/04
Abstract: A method of laser welding a workpiece stack-up (10) of overlapping steel workpieces (12, 14) involves heat-treating a region (64) of the stack-up (10) followed by forming a laser weld joint (66) that is located at least partially within the heat-treated region (64). During heat-treating, one or more pre-welding laser beams (68) are sequentially directed at a top surface (20) of the workpiece stack-up (10) and advanced along a pre-welding beam travel pattern (70) so as to reduce an amount of vaporizable zinc within the stack-up (10). Thereafter, the laser weld joint (66) is formed by directing a welding laser beam (82) at the top surface (20) of the workpiece stack-up (10) and advancing the welding laser beam (82) along a welding beam travel pattern (84) that at least partially overlaps with a coverage area of a pre-welding beam travel pattern (70) or a shared coverage area portion of multiple pre-welding beam travel patterns (70). The method can help reduce an amount of vaporizable zinc within the stack-up (10).
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公开(公告)号：US20200290290A1
公开(公告)日：2020-09-17
申请号：US16355209
申请日：2019-03-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Ryan Gergely , Blair E. Carlson , David A. Okonski
Abstract: A method of joining workpieces includes the steps of bringing a first workpiece and a second workpiece together, induction heating a susceptor material, and pressing the workpieces together. Each workpiece may include a thermoplastic material, and the workpieces are brought together at a joint interface so that a protrusion of the first workpiece is aligned with a receptacle of the second workpiece. The susceptor material is in contact with the thermoplastic material of the first workpiece during heating such that the thermoplastic material of the first workpiece softens. The step of pressing is performed while the thermoplastic material of the first workpiece is softened, thereby reshaping the first workpiece where the susceptor material is in contact with the thermoplastic material of the first workpiece. The protrusion is deformed to form an interlock with the receptacle at the joint interface.
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公开(公告)号：US20200290269A1
公开(公告)日：2020-09-17
申请号：US16355186
申请日：2019-03-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David A. Okonski , Ryan Gergely , Blair E. Carlson , William R. Rodgers
IPC: B29C64/165 , B33Y10/00 , B33Y70/00 , B29C64/295 , B29C64/209 , B29C70/38 , C08J7/04
Abstract: A composite fusion filament is disclosed that includes a polymer encasement and one or more mesogenic reinforcement bodies contained within the polymer encasement. The polymer encasement is comprised of a thermoplastic polymer, which has a melting temperature, and each of the one or more mesogenic reinforcement bodies is comprised of a thermotropic liquid crystal polymer, which has a clearing temperature. The melting temperature of the thermoplastic polymer included in the polymer encasement is less than the clearing temperature of the thermotropic liquid crystal polymer included in the one or more mesogenic reinforcement bodies. Additionally, the thermotropic liquid crystal polymer of each mesogenic reinforcement body has a plurality of organized crystalline fibrils that are aligned lengthwise along a longitudinal axis of the polymer encasement. A method of using the composite fusion filament to form a bond with a substrate that includes a thermoplastic polymer is also disclosed.
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Patent Agency Ranking
公开(公告)号：US10730133B2
公开(公告)日：2020-08-04
申请号：US15807219
申请日：2017-11-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amberlee S. Haselhuhn , David R. Sigler , Blair E. Carlson
Abstract: A welding electrode and a method of using the welding electrode for resistance spot welding are disclosed. The welding electrode includes a body and a weld face. The weld face includes a central dome portion and a shoulder portion that surrounds the central dome portion and extends from an outer circumference of the weld face upwardly and radially inwardly to the central dome portion. The central dome portion has a series of radially-spaced ringed ridges that project outwardly from a base dome face surface. The series of radially-spaced ringed ridges on the central dome portion includes an innermost ringed ridge and an outermost ringed ridge. The outermost ringed ridge on the central dome portion has a radial inner side surface and a radial outer side surface. The radial outer side surface extends below the base dome face surface down to the shoulder portion of the weld face.
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公开(公告)号：US10591405B2
公开(公告)日：2020-03-17
申请号：US15584512
申请日：2017-05-02
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Surender Maddela , Blair E. Carlson
IPC: G01N17/02 , G01N27/403 , G01N27/26 , G01N27/28 , G01N27/416
Abstract: A method for testing an electrochemical response of a sample, which is at least partially disposed within an electrolyte, includes macro scanning the sample. Macro scanning is applied across the entire sample and includes applying a first range of macro potential between the electrolyte and the sample, and measuring a first range of macro current between the electrolyte and the sample, while subject to the first range of macro potential. The macro scan is held at a first fixed macro potential within the first range of macro potential and the sample is micro scanned while held at the first fixed macro potential. Micro scanning is applied at individual points across a surface portion of the sample and includes measuring a plurality of first micro currents at each of the individual points of the surface portion of the sample. Each individual point is significantly smaller than the entire sample.
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公开(公告)号：US10376984B2
公开(公告)日：2019-08-13
申请号：US14673106
申请日：2015-03-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David R. Sigler , Blair E. Carlson
IPC: B23K103/20 , B23K11/20 , B23K11/11
Abstract: A method of resistance spot welding a workpiece stack-up that includes a steel workpieces and an aluminum alloy workpiece that overlie and contact one another to establish a faying interface at a weld site is disclosed. The method comprises passing a DC electrical current through the workpiece stack-up at the weld site and causing the current to assume a conical flow pattern. The conical flow pattern has a path of current flow that expands along a direction leading from a first welding electrode in electrical communication with the steel workpiece towards a second welding electrode in electrical communication with the aluminum alloy workpiece.
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公开(公告)号：US20190118307A1
公开(公告)日：2019-04-25
申请号：US16085283
申请日：2016-11-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Hui-Ping Wang , Yu Pan , Blair E. Carlson , Joshua L. Solomon , William P. Payne , David Yang , Wu Tao
IPC: B23K26/60 , B23K26/082 , B23K26/322 , B23K26/244 , B23K26/26
Abstract: A method of laser welding a workpiece stack-up (10) of overlapping steel workpieces (12, 14) involves heat-treating a region (64) of the stack-up (10) followed by forming a laser weld joint (66) that is located at least partially within the heat-treated region (64). During heat-treating, one or more pre-welding laser beams (68) are sequentially directed at a top surface (20) of the workpiece stack-up (10) and advanced along a pre-welding beam travel pattern (70) so as to reduce an amount of vaporizable zinc within the stack-up (10). Thereafter, the laser weld joint (66) is formed by directing a welding laser beam (82) at the top surface (20) of the workpiece stack-up (10) and advancing the welding laser beam (82) along a welding beam travel pattern (84) that at least partially overlaps with a coverage area of a pre-welding beam travel pattern (70) or a shared coverage area portion of multiple pre-welding beam travel patterns (70). The method can help reduce an amount of vaporizable zinc within the stack-up (10).
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公开(公告)号：US20190115004A1
公开(公告)日：2019-04-18
申请号：US16213135
申请日：2018-12-07
Applicant: GM Global Technology Operations LLC
Inventor： Anil K. Sachdev , Raja K. Mishra , Jon T. Carter , Tyson W. Brown , Blair E. Carlson , David R. Sigler , Robert N. Saje , Matthew P. Simonin
IPC: G10K11/168 , B32B15/01 , B32B27/08 , B32B27/32 , B62D25/04 , B62D25/10 , B60R13/08 , B60R7/06 , B62D21/00 , F16M13/02
Abstract: A panel assembly is formed by a plurality of bonds between two sheet materials in a face to face relationship to form a preform. The plurality of bonds define a closed perimeter region between the two sheet materials and an open perimeter region between the two sheet materials. The preform may be formed into a predefined shape. Pressurized fluid is applied through an inlet into the open perimeter region to expand the preform. The pressurized fluid expands the open perimeter region such that the two sheet materials expand in an opposing direction, thereby defining an expanded open perimeter region. The closed perimeter region between the two sheet materials remains vacant of the pressurized fluid such that the closed perimeter region is not expanded. The expanded open perimeter region is filled with a filler material for improving a performance characteristic of the panel assembly, e.g., strength, sound absorption, or stiffness.
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