US 11,701,820 B2
Recoaters with gas flow management
Diana Giulietti, Manchester, CT (US); and David W. Morganson, Marlborough, CT (US)
Assigned to Collins Engine Nozzles, Inc., Des Moines, IA (US)
Filed by Delavan Inc., West Des Moines, IA (US)
Filed on Sep. 29, 2021, as Appl. No. 17/488,711.
Application 17/488,711 is a division of application No. 16/258,111, filed on Jan. 25, 2019, granted, now 11,179,888.
Prior Publication US 2022/0016836 A1, Jan. 20, 2022
Int. Cl. B29C 64/153 (2017.01); B29C 64/188 (2017.01); B05C 11/02 (2006.01); B29C 64/205 (2017.01); B29C 64/214 (2017.01); B33Y 10/00 (2015.01); B22F 10/28 (2021.01); B22F 12/60 (2021.01); B22F 12/67 (2021.01); B22F 10/73 (2021.01); B22F 12/70 (2021.01); B22F 10/32 (2021.01); B22F 10/37 (2021.01)
CPC B29C 64/153 (2017.08) [B05C 11/023 (2013.01); B22F 10/28 (2021.01); B22F 12/60 (2021.01); B22F 12/67 (2021.01); B29C 64/188 (2017.08); B29C 64/205 (2017.08); B29C 64/214 (2017.08); B33Y 10/00 (2014.12); B22F 10/32 (2021.01); B22F 10/37 (2021.01); B22F 10/73 (2021.01); B22F 12/70 (2021.01)] 4 Claims
OG exemplary drawing
 
1. A method of additive manufacturing comprising:
advancing a recoater over a build area to push powder across the build area;
collecting powder in a baffle mounted to an end of the recoater;
depositing the collected powder from the baffle beyond the build area; and
selectively fusing powder in the build area, wherein the baffle is a first baffle and wherein collecting powder includes collecting powder in the first baffle and in a second baffle mounted to an end of the recoater opposite the first baffle, wherein each of the first and second baffles includes:
a base mounted to the recoater;
a first wall that extends obliquely ahead of and laterally outward from the base relative to the advancing direction; and
a second wall opposite the first wall, the second wall extending obliquely ahead of and laterally inward from the base relative to the advancing direction, wherein a volume is defined between the first and second wall with capacity to collect powder as the recoater advances, wherein the second wall is opposite and laterally inward from the first wall.