US 11,745,426 B2
Scan field variation for additive manufacturing
Justin Mamrak, Loveland, OH (US); MacKenzie Ryan Redding, Mason, OH (US); and Thomas Graham Spears, Springdale, OH (US)
Assigned to General Electric Company, Schenectady, NY (US)
Appl. No. 16/761,644
Filed by General Electric Company, Schenectady, NY (US)
PCT Filed Nov. 2, 2018, PCT No. PCT/US2018/058874
§ 371(c)(1), (2) Date May 5, 2020,
PCT Pub. No. WO2019/094280, PCT Pub. Date May 16, 2019.
Claims priority of provisional application 62/584,482, filed on Nov. 10, 2017.
Prior Publication US 2021/0178480 A1, Jun. 17, 2021
Int. Cl. B29C 64/268 (2017.01); B22F 10/14 (2021.01); B22F 10/28 (2021.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); B29C 64/393 (2017.01); B29C 64/165 (2017.01); B22F 12/41 (2021.01); B22F 10/366 (2021.01); B22F 12/37 (2021.01); B22F 12/67 (2021.01); B22F 12/70 (2021.01)
CPC B29C 64/268 (2017.08) [B22F 10/14 (2021.01); B22F 10/28 (2021.01); B22F 10/366 (2021.01); B22F 12/41 (2021.01); B29C 64/165 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12); B22F 12/37 (2021.01); B22F 12/67 (2021.01); B22F 12/70 (2021.01)] 15 Claims
OG exemplary drawing
 
1. A method for forming an object comprising:
solidifying at least a portion of a first layer of a build material within a first scan region including a first location of a build unit relative to the build material;
moving the build unit to a second scan region including a second location of the build unit relative to the build material, and solidifying at least a portion of the first layer of the build material within the second scan region;
providing a second layer of the build material over at least a portion of the first scan region; and
solidifying at least a portion of the second layer of the build material within a third scan region including a third location of the build unit relative to the build material, wherein the third scan region at least partially overlaps but is offset with relation to the first scan region;
wherein the build unit comprises an irradiation emission directing device and a laminar gas flow zone.