公开(公告)号：US20240279761A1

公开(公告)日：2024-08-22

申请号：US18170796

申请日：2023-02-17

Applicant: GM Global Technology Operations LLC

Inventor： Garrold A. DeGrace ,  Sheri K. Kurgin ,  Daniel T. Berry ,  Kirk R. Frame

IPC: C21D1/09 ,  B23K26/08 ,  B23K26/352

CPC classification number: C21D1/09 ,  B23K26/083 ,  B23K26/352 ,  C21D2221/00

Abstract: A system for heat treating cylinder bores within an engine includes a laser head and a controller adapted to cause the laser head to move to each cylinder bore and create a first plurality of hardened pills within each one of a first plurality of positional zones, cause the laser head to move to each cylinder bore and create a second plurality of hardened pills within each one of the first plurality of positional zones, cause the laser head to move to each cylinder bore and create a first plurality of hardened pills within each one of a second plurality of positional zones, cause the laser head to move to each cylinder bore and create a second plurality of hardened pills within each one of the second plurality of positional zones.

公开(公告)号：US20220097127A1

公开(公告)日：2022-03-31

申请号：US17036335

申请日：2020-09-29

Applicant: GM Global Technology Operations LLC

Inventor： David D. Goettsch ,  Garrold A. DeGrace ,  Gregory T. Naismith ,  Madhusudhan Raju Nannapuraju ,  Anil K. Sachdev

IPC: B22D17/22

Abstract: A modular casting mold for casting an automotive component includes a plurality of die portions defining a mold cavity corresponding to an automotive component, at least one of the plurality of die portions is an active die portion adapted to control the temperature of the modular casting mold throughout the casting process and including features for ejecting an automotive component cast within the modular casting mold, and the modular casting mold adapted to be attached to another modular casting mold for casting a single automotive component.

公开(公告)号：US11305340B1

公开(公告)日：2022-04-19

申请号：US17036335

申请日：2020-09-29

Applicant: GM Global Technology Operations LLC

Inventor： David D. Goettsch ,  Garrold A. DeGrace ,  Gregory T. Naismith ,  Madhusudhan Raju Nannapuraju ,  Anil K. Sachdev

IPC: B22D17/22

Abstract: A modular casting mold for casting an automotive component includes a plurality of die portions defining a mold cavity corresponding to an automotive component, at least one of the plurality of die portions is an active die portion adapted to control the temperature of the modular casting mold throughout the casting process and including features for ejecting an automotive component cast within the modular casting mold, and the modular casting mold adapted to be attached to another modular casting mold for casting a single automotive component.

公开(公告)号：US11253985B2

公开(公告)日：2022-02-22

申请号：US16853321

申请日：2020-04-20

Applicant: GM Global Technology Operations LLC

Inventor： Garrold A. DeGrace ,  Gabriel Gonzalez Gillis ,  Patrick M. Hilber

IPC: B25B27/02

Abstract: A cup plug insertion tool comprises a cylindrical base and a cylindrical collet extending from the base and including at least two longitudinal slots that divide the collet into at least two flexible segments adapted to flex radially inward under force, an annular groove formed adjacent the base, the annular groove adapted to allow the flexible segments to flex radially inward, further wherein, the force necessary to flex the flexible segments radially inward is tunable based on a width and depth of the annular groove, a first section defining a circumferential outer diameter and a circumferential inner diameter, a second section defining a circumferential outer diameter that is larger than the circumferential outer diameter of the first section, a tip positioned at the distal end of the collet, and a chamfer formed between the outer diameter of the first section and the tip.

公开(公告)号：US20210323127A1

公开(公告)日：2021-10-21

申请号：US16853321

申请日：2020-04-20

Applicant: GM Global Technology Operations LLC

Inventor： Garrold A. DeGrace ,  Gabriel Gonzalez Gillis ,  Patrick M. Hilber

IPC: B25B27/02

Abstract: A cup plug insertion tool comprises a cylindrical base and a cylindrical collet extending from the base and including at least two longitudinal slots that divide the collet into at least two flexible segments adapted to flex radially inward under force, an annular groove formed adjacent the base, the annular groove adapted to allow the flexible segments to flex radially inward, further wherein, the force necessary to flex the flexible segments radially inward is tunable based on a width and depth of the annular groove, a first section defining a circumferential outer diameter and a circumferential inner diameter, a second section defining a circumferential outer diameter that is larger than the circumferential outer diameter of the first section, a tip positioned at the distal end of the collet, and a chamfer formed between the outer diameter of the first section and the tip.

公开(公告)号：US20180238263A1

公开(公告)日：2018-08-23

申请号：US15439076

申请日：2017-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Garrold A. DeGrace ,  Maurice G. Meyer ,  Paul Boone ,  Gregory T. Naismith

IPC: F02F1/00

CPC classification number: F02F1/14 ,  F02F2001/008 ,  F02F2200/06

Abstract: A cylinder liner for an engine block that includes an inter-bore saw cut includes a first engine block bonding surface, and a second engine block bonding surface that has a lower level of bonding between the cylinder liner and an engine block than the first engine block bonding surface. The second engine block bonding surface extending from an axial end portion of the liner a distance greater than a depth of the saw cut in inter-bore section of the engine block.