Techniques for depowdering additively fabricated parts via rapid pressure change and related systems and methods

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12240040
APP PUB NO 20230150029A1
SERIAL NO

17976282

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Abstract

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Techniques for depowdering additively fabricated parts are described in which powder is separated from parts by creating a large pressure differential between the powder and parts and a nearby location. The pressure differential may cause gas to quickly flow into and/or around the powder and parts, thereby producing a force against the powder and parts. Since the powder is generally much lighter than the parts, this force may be much more effective at moving the powder than moving the parts. As a result, the powder and parts may be separated from one another. The pressure differential may be created in various ways, such as by holding the parts and part in a chamber that is pressurized with air and/or other gas(es). Rapid depressurization of the chamber may produce the aforementioned pressure differential, leading to powder movement away from the parts.

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Patent Owner(s)

  • DESKTOP METAL, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sachs, Emanuel M Newton, US 67 3490
Zero, Midnight Wilmington, US 10 26

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