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.:
Date of Patent:
Aug. 08, 2023
Filed:
Dec. 18, 2017
Applicant:
3d Systems, Inc., Rock Hill, SC (US);
Inventor:
Charles W. Hull, Santa Clarita, CA (US);
Assignee:
3D SYSTEMS, INC, Rockhill, SC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 64/277 (2017.01); B29C 64/153 (2017.01); B29C 64/393 (2017.01); B29C 64/268 (2017.01); B33Y 30/00 (2015.01); B33Y 10/00 (2015.01); B22F 12/00 (2021.01); B22F 10/10 (2021.01); B22F 10/28 (2021.01); B22F 12/13 (2021.01); B22F 12/17 (2021.01); B22F 12/41 (2021.01); B22F 12/90 (2021.01); B22F 10/362 (2021.01); B22F 10/77 (2021.01); B22F 12/42 (2021.01); B22F 12/63 (2021.01); B22F 12/67 (2021.01);
U.S. Cl.
CPC ...
B29C 64/277 (2017.08); B22F 10/28 (2021.01); B22F 10/362 (2021.01); B22F 12/13 (2021.01); B22F 12/17 (2021.01); B22F 12/41 (2021.01); B22F 12/90 (2021.01); B29C 64/153 (2017.08); B29C 64/268 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B22F 10/10 (2021.01); B22F 10/77 (2021.01); B22F 12/42 (2021.01); B22F 12/63 (2021.01); B22F 12/67 (2021.01); B22F 2999/00 (2013.01); G01N 2203/0641 (2013.01); G01N 2203/0652 (2013.01); G05B 2219/37573 (2013.01); G05B 2219/49023 (2013.01); Y02P 10/25 (2015.11);
Abstract
Methods and apparatus are provided for controlling the temperature of powders in a powder-based additive manufacturing system using spatial light modulation. Powder layer temperatures can be measured and selectively controlled using a radiation source comprising a spatial light modulator. The spatial light modulator applies a visible light radiation and/or IR radiation. In addition to controlling the pre-fused temperature of the powder in the image plane, the spatial light modulator can also apply the radiation to fuse the powder.