US 12,128,624 B2
Hydraulic 3D-printing system and method
Jing Zhang, Los Angeles, CA (US); Dongjian Wang, Zhejiang (CN); Zhongyu Gao, Zhejiang (CN); Biqing Lu, Guangdong (CN); and Yubing Ding, Zhejiang (CN)
Assigned to SprintRay, Inc., Los Angeles, CA (US)
Filed by SprintRay, Inc., Los Angeles, CA (US)
Filed on May 16, 2023, as Appl. No. 18/198,257.
Claims priority of provisional application 63/433,185, filed on Dec. 16, 2022.
Prior Publication US 2024/0198591 A1, Jun. 20, 2024
Int. Cl. B29C 64/321 (2017.01); B29C 64/124 (2017.01); B33Y 10/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/321 (2017.08) [B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 40/00 (2014.12)] 11 Claims
OG exemplary drawing
 
1. A method for printing three-dimensional objects, comprising the steps of:
(a) moving a piston inside a chamber of a container assembly, the container assembly adapted to hold one or more printing materials and to print a three-dimensional (3D) object;
(b) transferring at least a portion of the printing material stored at least partially in the chamber to a printing area between a surface of a window and a platform, wherein movement of the piston inside the chamber hydraulically actuates the platform;
(c) emitting a curing light through the window to cure a layer of the printing material to the platform or to a previously cured layer of the printing material already cured onto the platform; and
(d) repeating steps (a)-(c) until the 3D object is formed, wherein moving the piston inside the chamber of the container assembly includes releasing a spring of the container assembly that actuates movement of the piston.