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:
May. 18, 2021
Filed:
Apr. 26, 2017
GM Global Technology Operations Llc, Detroit, MI (US);
John P Spicer, Plymouth, MI (US);
Jason J Nolte, Wixon, MI (US);
Thomas A. Perry, Bruce Township, MI (US);
Blair E Carlson, Ann Arbor, MI (US);
Anil K Sachdev, Rochester Hills, MI (US);
Hyungmin Chae, Novi, MI (US);
Mark A Smith, Huntington Woods, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
An additive manufacturing system includes a powder delivery system, an area scanning laser, a build chamber, and a controller. The powder delivery system provides a predetermined amount of powder material to the build chamber, and includes a material dispenser, a dispensing head, and a scraper. The scanning laser selectively sinters the powder material, and includes a mirror galvanometer for raster scanning. The build chamber has an annular configuration, and includes an inner annular wall that defines a central portion disposed inward of the build chamber. A portion of the delivery system and the laser are located in the central portion. The chamber continuously rotates under the head and under a sintering zone generated by the laser as the delivery system continuously dispenses the material. The laser continuously raster scans the material at the sintering zone in a raster pattern to sinter a layer of material directly to a preceding layer.