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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10543643 B1

PDFFull Text
Date of Patent:
Jan. 28, 2020

Filed:

Jun. 28, 2019

Automated de-powdering via liquid immersion

Applicant:

Desktop Metal, Inc., Burlington, MA (US);

Inventors:

Daniel Sachs, Sunnyvale, CA (US);

Jamison Go, Orlando, FL (US);

Robert J. Nick, Pepperell, MA (US);

Assignee:

Desktop Metal, Inc., Burlington, MA (US);

Attorney:

Wolf, Greenfield & Sacks, P.C.

Primary Examiner:

Nahida Sultana

Int. Cl.
CPC ...
B29C 64/35 (2017.01); B22F 3/00 (2006.01); B29C 64/165 (2017.01); B33Y 10/00 (2015.01); B22F 3/105 (2006.01); B33Y 40/00 (2015.01); B08B 3/12 (2006.01); B08B 5/02 (2006.01); B08B 7/02 (2006.01); B33Y 30/00 (2015.01); B29C 64/357 (2017.01); B22F 3/10 (2006.01);
U.S. Cl.
CPC ...
B29C 64/35 (2017.08); B08B 3/12 (2013.01); B08B 5/02 (2013.01); B08B 7/028 (2013.01); B22F 3/008 (2013.01); B22F 3/1055 (2013.01); B29C 64/165 (2017.08); B29C 64/357 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12); B22F 2003/1046 (2013.01); B22F 2003/1056 (2013.01); B22F 2003/1058 (2013.01); B22F 2003/1059 (2013.01); B22F 2301/00 (2013.01); Y02P 10/295 (2015.11);
Abstract

According to some aspects, a de-powdering subsystem for an additive fabrication system is described. The de-powdering subsystem may comprise a bath subsystem. The bath subsystem may comprise a reservoir configured to contain a liquid and to accept objects to be de-powdered into the liquid, and an agitation facility configured to cause currents within the liquid. The agitator facility may be at least one of (i) a pump configured to circulate the liquid within the reservoir, (ii) a heating element configured to generate convection currents in the liquid, and (iii) a stirrer driven through a linkage to a motor. The bath subsystem may comprise at least one ultrasonic transducer configured to apply ultrasonic vibrations to the liquid within the reservoir.

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