公开(公告)号：US12206285B2

公开(公告)日：2025-01-21

申请号：US18174879

申请日：2023-02-27

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  John S. Agapiou ,  Liang Wang ,  Lei Hao ,  Daniel J. Wilson ,  Steven L Burkholder

IPC: H02K1/26 ,  H02K15/02

Abstract: An induction rotor assembly having conductive bars is provided. The assembly comprises a lamination stack comprising a body having a first end and second ends to define a longitudinal axis. The body has an outer circumferential portion extending from the first end to the second end. The outer portion has a plurality of walls defining open slots formed from the first end through the second end. The assembly further comprises a first ring disposed on the first end and a second ring disposed on the second end. The assembly further comprises a plurality of conductive bars extending between the first and second rings. Each conductive bar is disposed in one of the slots such that the respective conductive bar is in contact with the lamination stack and connects the first and second rings. Each bar comprises an inner portion and a conductive outer skin disposed about the inner portion.

公开(公告)号：US12128476B2

公开(公告)日：2024-10-29

申请号：US18158725

申请日：2023-01-24

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Liang Wang ,  Tiruttani Munikamal ,  Shasha Vali Shaik ,  Suresh Kumar K ,  Steven L Burkholder ,  Thomas W. Gustafson

IPC: B22D25/04 ,  B22D21/00 ,  B22D35/04

CPC classification number: B22D25/04 ,  B22D21/007 ,  B22D35/04

Abstract: A system and method of manufacturing an aluminum fuel cell cradle includes providing a negative cast mold having cavities to form the cradle having a length greater than a width to define a longitudinal axis and providing a feeding mechanism disposed about the mold and in fluid communication with the cavities thereof. The feeding mechanism includes primary risers connected to and in fluid communication with the cavities. The method further includes melting a first metallic material to define a molten metallic material, moving the mold to a vertical orientation about the longitudinal axis while feeding molten metallic material through the runner to the cavities, and moving the cast mold to a horizontal orientation. A second solidification time in the risers is greater than a first solidification time in the mold such that shrinkage of the solidified metallic material occurs in the risers away from the mold.

公开(公告)号：US11772156B2

公开(公告)日：2023-10-03

申请号：US17153049

申请日：2021-01-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qigui Wang ,  Thomas W. Gustafson ,  Steven L Burkholder ,  Daniel J. Wilson ,  Gregory Melekian

IPC: B22D27/13 ,  B22D47/02

CPC classification number: B22D47/02 ,  B22D27/13

Abstract: Methods and systems are provided for continuously producing cast metal components. An exemplary method includes feeding molten metal into a first mold at a fill station; maintaining a pressurized chamber at an elevated pressure; moving the first mold into the pressurized chamber, wherein the molten metal solidifies in the first mold under the elevated pressure; and removing the first mold from the pressurized chamber.