US 12,226,811 B2
Techniques for depowdering additively fabricated parts via gas flow and related systems and methods
Jamison Go, Orlando, FL (US); Michael Santorella, Boston, MA (US); Jonah Samuel Myerberg, Lexington, MA (US); Matthew McCambridge, Burlington, MA (US); Alexander LeGendre, Boston, MA (US); Joseph Gabay, Somerville, MA (US); Robert J. Nick, Pepperell, MA (US); and Michael Goldblatt, Lincoln, MA (US)
Assigned to Desktop Metal, Inc., Burlington, MA (US)
Filed by Desktop Metal, Inc., Burlington, MA (US)
Filed on Feb. 14, 2024, as Appl. No. 18/441,951.
Application 18/441,951 is a division of application No. 16/983,138, filed on Aug. 3, 2020, granted, now 11,951,515.
Claims priority of provisional application 62/882,703, filed on Aug. 5, 2019.
Prior Publication US 2024/0181503 A1, Jun. 6, 2024
Int. Cl. B08B 5/02 (2006.01); B22F 1/10 (2022.01); B22F 3/10 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/20 (2020.01)
CPC B08B 5/02 (2013.01) [B22F 1/10 (2022.01); B22F 3/1017 (2013.01); B33Y 40/20 (2020.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] 9 Claims
OG exemplary drawing
 
1. An apparatus for extracting one or more additively fabricated parts from a powder bed comprising a powder and the one or more additively fabricated parts, the apparatus comprising:
a chamber configured to receive a build box containing the powder bed and configured to form a hermetic seal around at least part of the build box such that a surface of the powder bed may be exposed within the chamber, the chamber comprising:
one or more nozzles each configured to direct a jet of gas onto the surface of the powder bed;
one or more inlets;
one or more outlets; and
at least one pressure source coupled to the one or more inlets and/or to the one or more outlets and configured to create a pressure differential between the one or more inlets and the one or more outlets.