US 11,999,107 B2
Controlled molten metal deposition
Atieh Moridi, Ithaca, NY (US); and Kaushalendra K. Singh, Ithaca, NY (US)
Assigned to Cornell University, Ithaca, NY (US)
Appl. No. 18/269,051
Filed by Cornell University, Ithaca, NY (US)
PCT Filed Dec. 23, 2021, PCT No. PCT/US2021/065122
§ 371(c)(1), (2) Date Jun. 22, 2023,
PCT Pub. No. WO2022/140688, PCT Pub. Date Jun. 30, 2022.
Claims priority of provisional application 63/130,171, filed on Dec. 23, 2020.
Prior Publication US 2023/0398738 A1, Dec. 14, 2023
Int. Cl. B29C 64/273 (2017.01); B22F 10/22 (2021.01); B22F 10/25 (2021.01); B22F 12/43 (2021.01); B29C 64/223 (2017.01); B29C 64/236 (2017.01); B29C 64/245 (2017.01); B29C 64/321 (2017.01); B29C 64/371 (2017.01); C23C 14/04 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/273 (2017.08) [B22F 10/22 (2021.01); B22F 10/25 (2021.01); B22F 12/43 (2021.01); B29C 64/223 (2017.08); B29C 64/236 (2017.08); B29C 64/245 (2017.08); B29C 64/321 (2017.08); B29C 64/371 (2017.08); C23C 14/048 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 36 Claims
OG exemplary drawing
 
1. An additive manufacturing system, comprising:
an enclosure, the enclosure defining an inlet, an exhaust, and an aperture and comprising a substrate upon which a workpiece is to be formed and an optically transparent support disposed between the aperture and the substrate;
a pulsed laser, disposed outside the enclosure, positioned to emit one or more pulses through the aperture and into the enclosure;
a feedstock comprising a sheet or ribbon of material that is moveable with respect to the transparent support;
a feedstock advancement device, at least partially disposed within the enclosure, to advance the feedstock within the enclosure and to maintain the feedstock adjacent the optically transparent support; and
a controller to cause the pulsed laser to emit one or more pulses through the aperture and the optically transparent support to impinge upon a selected portion of the feedstock to liquefy the selected portion of the feedstock and discharge a droplet of the material from the feedstock onto the substrate or onto a workpiece on the substrate.