公开(公告)号：US20180023703A1

公开(公告)日：2018-01-25

申请号：US15216367

申请日：2016-07-21

Applicant: GM Global Technology Operations LLC

Inventor： Ronald J. PETRUS ,  Zheng MA ,  Qigui WANG

IPC: F16J9/20 ,  F16J9/26

CPC classification number: F16J9/20 ,  B23P15/06 ,  F16J9/26

Abstract: A piston ring includes a generally circular open ring having a generally cylindrical outer diameter surface and an inner diameter surface having a plurality of radially outwardly extending arcuate recesses. A method of making the piston ring includes extruding a rectangle cross-section steel wire to include at least two recesses in a side edge thereof. The extruded steel wire is wound in a ring-shape with the arcuate recesses being on an inner diameter surface of the wound ring.

公开(公告)号：US20240250590A1

公开(公告)日：2024-07-25

申请号：US18101395

申请日：2023-01-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： John S. AGAPIOU ,  Qigui WANG ,  Lei HAO

IPC: H02K15/04 ,  B21D5/16 ,  H02K3/02

CPC classification number: H02K15/0421 ,  B21D5/16 ,  H02K3/02

Abstract: A method of making a conductor includes folding/stacking/rolling an ultra-conducting copper foil into a multiple layer folded/stacked/rolled ultra-conducting copper foil. Cladding the multiple layer folded/stacked/rolled ultra-conducting coper foil with one of copper and aluminum into a cladded folded/stacked/rolled ultra-conducting copper foil and plastically deforming the cladded folded/stacked/rolled ultra-conducting copper foil into one of a cladded ultra-conducting copper wire, bar, and cable.

公开(公告)号：US20240250570A1

公开(公告)日：2024-07-25

申请号：US18312029

申请日：2023-05-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Lei HAO ,  Qigui WANG ,  John S. AGAPIOU ,  Thomas W. NEHL ,  Xiaohui DU

IPC: H02K3/02

CPC classification number: H02K3/02

Abstract: An electric motor includes a stator and a rotor rotatable relative to the stator and having an air gap between the rotor and the stator, wherein at least one of the stator and the rotor include a plurality of windings formed from ultra-conducting copper foil.

公开(公告)号：US20180291480A1

公开(公告)日：2018-10-11

申请号：US15896615

申请日：2018-02-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Michael J. WALKER ,  Qigui WANG

IPC: C22C1/02 ,  C22C1/03

Abstract: A method of making an aluminum alloy containing zirconium includes heating a first composition including aluminum to a first temperature. The first temperature is greater than or equal to a liquidus temperature of the first composition. The method further includes adding a second composition including a copper-zirconium compound to the first composition. The method further includes decomposing at least a portion of the copper-zirconium compound into copper and zirconium. The method further includes forming a third composition by dissolving at least some of the copper from the decomposing in the aluminum of the first composition. The method further includes cooling the third composition to a second temperature to form a first solid material. The second temperature is less than or equal to a solidus temperature of the third composition. The method further includes heat treating the first solid material to form the aluminum alloy containing zirconium.