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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 12304146 B1

PDFFull Text
Date of Patent:
May. 20, 2025

Filed:

Aug. 22, 2023

Apparatus for the manufacture of three-dimensional objects

Applicant:

Stratasys Powder Production Ltd., London, GB;

Inventors:

Frederik Tjellesen, London, GB;

Anders Hartmann, London, GB;

Alexander Rasmussen, London, GB;

Assignee:

Stratasys Powder Production Ltd., London, GB;

Attorneys:

Honigman LLP

Eric J. Sosenko

Jonathan P. O'Brien

Primary Examiner:

Timothy Kennedy

Int. Cl.
CPC ...
B29C 64/357 (2017.01); B22F 10/73 (2021.01); B22F 12/50 (2021.01); B29C 64/153 (2017.01); B29C 64/214 (2017.01); B29C 64/245 (2017.01); B29C 64/255 (2017.01); B29C 64/295 (2017.01); B29C 64/307 (2017.01); B29C 64/314 (2017.01); B29C 64/321 (2017.01); B33Y 40/00 (2020.01); B22F 10/28 (2021.01); B22F 12/13 (2021.01); B22F 12/20 (2021.01); B22F 12/57 (2021.01); B22F 12/63 (2021.01); B22F 12/90 (2021.01); B29C 64/209 (2017.01); B29C 64/227 (2017.01); B33Y 30/00 (2015.01); B33Y 40/10 (2020.01);
U.S. Cl.
CPC ...
B29C 64/307 (2017.08); B22F 10/73 (2021.01); B22F 12/50 (2021.01); B29C 64/153 (2017.08); B29C 64/214 (2017.08); B29C 64/245 (2017.08); B29C 64/255 (2017.08); B29C 64/295 (2017.08); B29C 64/314 (2017.08); B29C 64/321 (2017.08); B29C 64/357 (2017.08); B33Y 40/00 (2014.12); B22F 10/28 (2021.01); B22F 12/13 (2021.01); B22F 12/20 (2021.01); B22F 12/57 (2021.01); B22F 12/63 (2021.01); B22F 12/90 (2021.01); B29C 64/209 (2017.08); B29C 64/227 (2017.08); B33Y 30/00 (2014.12); B33Y 40/10 (2020.01);
Abstract

A method for recirculating powder in an apparatus for manufacturing a three-dimensional object from the powder. The powder recirculation method includes: providing powder in a powder repository, the powder being one of fresh powder, excess powder or a blend thereof; transferring the powder from the repository to a work surface; distributing the powder across a build surface and resulting in a portion of the powder defining excess powder; returning the excess powder back to the repository; monitoring the amount of powder in the repository relative to a predetermined amount of powder; and delivering fresh powder from a powder tank to the repository when the amount of powder in the repository is less than the predetermined amount and not delivering fresh powder when excess powder is being returned to repository and the amount of powder in the repository is greater than the predetermined amount of powder.

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