公开(公告)号：US10352466B2

公开(公告)日：2019-07-16

申请号：US15635745

申请日：2017-06-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Richard J Skurkis ,  Anthony L Smith ,  Xiujie Gao

IPC: F16K31/00

Abstract: A valve assembly includes a body having a longitudinal axis and defining a cavity therein. A shuttle valve is arranged within the cavity. The shuttle valve has a first surface and a second, opposing surface. An actuator element is adjacent the first surface of the shuttle valve and configured for translating the shuttle valve along the longitudinal axis between a first position and a second position. The actuator element is formed from a shape memory alloy that is transitionable between a martensite crystallographic phase and an austenite crystallographic phase in response to a thermal activation signal to thereby translate the shuttle valve between the first position and the second position. Furthermore, a resilient member is adjacent the second surface of the shuttle valve. The resilient member is configured to oppose the movement of the shuttle valve moving from the first position to the second position.

公开(公告)号：US11772162B2

公开(公告)日：2023-10-03

申请号：US17083758

申请日：2020-10-29

Applicant: GM Global Technology Operations LLC

Inventor： Md Ashabul Anam ,  Mark A Smith ,  Tyson W Brown ,  Richard J Skurkis ,  HyungMin Chae ,  Whitney A Poling

IPC: B22F10/00 ,  B22F3/10 ,  B29C64/35 ,  B33Y30/00 ,  B33Y10/00

CPC classification number: B22F10/00 ,  B22F3/1007 ,  B29C64/35 ,  B22F2201/20 ,  B33Y10/00 ,  B33Y30/00

Abstract: A powder bed fusion system includes a powder bed including a build surface and a vacuum system. The vacuum system includes a collection device positioned over the build surface. The collection device includes a body, a pathway defined in the body, wherein the pathway ends in a passageway opening, and a particle retainer connected to the body near the passageway opening. A method of forming a component includes forming a layer of unfused metal powder on a powder bed with a recoater, introducing gas to the powder bed and applying a vacuum with a collection device, fusing a portion of the layer of unfused metal powder on the powder bed with a heat source to form a component layer and generating contaminants, collecting the contaminants from the powder bed with the gas and the vacuum applied by the collection device.

公开(公告)号：US11167381B2

公开(公告)日：2021-11-09

申请号：US16778885

申请日：2020-01-31

Applicant: GM Global Technology Operations LLC

Inventor： Miguel A Saez ,  John P. Spicer ,  Spyros P Mellas ,  Richard J Skurkis ,  Pei-chung Wang ,  James W Wells ,  Wayne Cai ,  Dooil Hwang

IPC: B23K37/04 ,  G05B19/402 ,  B23K101/00

Abstract: A clamp system and method for measurement and control of welding a first substrate to a second substrate is provided. The system comprises a squeeze clamp having to a first end and a second end. The system further comprises a motor connected to the squeeze clamp such that the first and second ends are movable to clamp the first substrate to the second substrate. The system further comprises at least one of an electromagnetic flux sensor, a current sensor, a position sensor, and a gap sensor disposed on one of the first and second ends for determining a first measured variable between the first and second substrates. The system further comprises a controller to control the motor to clamp the first substrate to the second substrate based on the first measured variable. The controller is in communication with the electromagnetic flux sensor, the current sensor, and the gap sensor.