US 12,325,040 B2
System for the deposition of microparticles
Mario Guagliano, Pavia (IT); Stefano Monti, Cornegliano Laudense (IT); Carlo Bonadonna, Milan (IT); Mauro Paganelli, Monza (IT); Sara Bagherifard, Milan (IT); and Gabriele D'Antona, Varese (IT)
Assigned to POLITECNICO DI MILANO, Milan (IT)
Appl. No. 17/909,507
Filed by POLITECNICO DI MILANO, Milan (IT)
PCT Filed Mar. 4, 2021, PCT No. PCT/IB2021/051801
§ 371(c)(1), (2) Date Sep. 6, 2022,
PCT Pub. No. WO2021/176388, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 102020000004678 (IT), filed on Mar. 5, 2020.
Prior Publication US 2023/0112751 A1, Apr. 13, 2023
Int. Cl. B29C 64/209 (2017.01); B05B 5/025 (2006.01); B05B 5/043 (2006.01); B29C 64/141 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01)
CPC B05B 5/0255 (2013.01) [B05B 5/043 (2013.01); B29C 64/141 (2017.08); B29C 64/209 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] 22 Claims
OG exemplary drawing
 
1. A system for solid state deposition of microparticles, comprising:
at least one launch unit configured to individually accelerate and convey a succession of the microparticles in a direction of a work surface, the at least one launch unit having a substantially tubular shape defining a flow channel for the succession of the microparticles extending between an inlet end, interfaceable with a device for feeding the microparticles, and an outlet end, opposite to said inlet end and which is oriented to face the work surface; the at least one launch unit comprising:
a charging portion, proximal to the inlet end, configured to generate an electric field of electrification adapted to electrically charge the succession of the microparticles;
an acceleration portion, proximal to the outlet end, configured to generate an electric field of acceleration adapted to electrically accelerate the succession of charged microparticles towards the outlet end;
a retaining device coupled to the charging portion and selectively activatable to retain each of the microparticles inside the charging portion.