US 11,772,162 B2
Local collection of contaminants formed during metal powder bed fusion process
Md Ashabul Anam, Sterling Heights, MI (US); Mark A Smith, Huntington Woods, MI (US); Tyson W Brown, Royal Oak, MI (US); Richard J Skurkis, Lake Orion, MI (US); HyungMin Chae, Troy, MI (US); and Whitney A Poling, Rochester Hills, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Oct. 29, 2020, as Appl. No. 17/83,758.
Prior Publication US 2022/0134425 A1, May 5, 2022
Int. Cl. B22F 10/00 (2021.01); B22F 3/10 (2006.01); B29C 64/35 (2017.01); B33Y 30/00 (2015.01); B33Y 10/00 (2015.01)
CPC B22F 10/00 (2021.01) [B22F 3/1007 (2013.01); B29C 64/35 (2017.08); B22F 2201/20 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] 14 Claims
OG exemplary drawing
 
1. A powder bed fusion system, comprising:
a powder bed including a build surface; and
a vacuum system including a collection device positioned over the build surface including
a body,
a pathway defined in the body, wherein the pathway ends in a passageway opening,
a particle trap connected to the body; and
a particle retainer connected to the body and extending out from the body near the passageway opening and particle trap,
wherein the particle retainer and particle trap extend the length of the body.