US 11,951,515 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 Aug. 3, 2020, as Appl. No. 16/983,138.
Claims priority of provisional application 62/882,703, filed on Aug. 5, 2019.
Prior Publication US 2021/0046519 A1, Feb. 18, 2021
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)] 14 Claims
OG exemplary drawing
 
1. A method for extracting one or more additively fabricated parts from a powder bed comprising a powder and the one or more additively fabricated parts, the method comprising:
inserting at least part of the powder bed into a chamber, the chamber comprising one or more inlets and one or more outlets, wherein the one or more inlets comprise one or more openings into the chamber;
forming a hermetic seal around the at least part of the powder bed;
directing, using one or more nozzles, one or more jets of gas onto a surface of the powder bed within the chamber; and
producing, concurrently with said directing the one or more jets of gas onto the surface of the powder, a continuous flow of gas through the chamber from the one or more inlets to the one or more outlets such that powder from the powder bed is transported through at least some of the one or more outlets.