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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 12044618 B1

PDFFull Text
Date of Patent:
Jul. 23, 2024

Filed:

Oct. 26, 2020

Additive manufacturing apparatus and method

Applicant:

Renishaw Plc, Wotton-under-Edge, GB;

Inventors:

Ian Robert Thomas Ashton, St. Helens, GB;

Stephan Kloss, Pliezhäuser Str. 19/1, DE;

Christopher Sutcliffe, Liverpool, GB;

Ben Ian Ferrar, Stoke-on-Trent, GB;

Assignee:

RENISHAW PLC, Wotton-under-Edge, GB;

Attorney:

Oliff PLC

Primary Examiner:

Jenny R Wu

Int. Cl.
CPC ...
B22F 3/105 (2006.01); B22F 10/00 (2021.01); B22F 10/28 (2021.01); B22F 10/31 (2021.01); B22F 12/44 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B23K 26/02 (2014.01); B29C 64/153 (2017.01); B29C 64/268 (2017.01); G01J 3/28 (2006.01); G01N 21/27 (2006.01); G01N 21/71 (2006.01); B22F 10/36 (2021.01); B22F 10/366 (2021.01); B22F 10/368 (2021.01); B22F 12/41 (2021.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01);
U.S. Cl.
CPC ...
G01N 21/274 (2013.01); B22F 10/00 (2021.01); B22F 10/28 (2021.01); B22F 12/44 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B29C 64/153 (2017.08); B29C 64/268 (2017.08); G01J 3/28 (2013.01); G01N 21/718 (2013.01); B22F 10/31 (2021.01); B22F 10/36 (2021.01); B22F 10/366 (2021.01); B22F 10/368 (2021.01); B22F 12/41 (2021.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); G01N 2201/06113 (2013.01); Y02P 10/25 (2015.11);
Abstract

This invention concerns a laser solidification apparatus for building objects by layerwise solidification of powder material. The apparatus including a build chamber containing a build platform, a device for depositing layers of powder material on to the build platform, an optical unit for directing a laser beam to selectively solidify areas of each powder layer and a spectrometer for detecting characteristic radiation emitted by plasma formed during solidification of the powder by the laser beam. The invention also relates to a spectrometer for detecting characteristic radiation generated by interaction of the metal with the or a further laser beam. The spectra recorded using the spectrometer may be used for feedback control during the solidification process.

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