Patent ID: 11911955
Assignee: TRIAD NATIONAL SECURITY, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 17:
18. A system for additive manufacturing, the system comprising:
a vat having an inlet region, an outlet region, and a transparent portion with an inner surface and an outer surface;
a first conduit for conveying a fluid to the vat coupled to the inlet region of the vat;
a second conduit for conveying the fluid from the vat coupled to the outlet region of the vat;
the fluid and a photopolymer resin capable of photopolymerization, wherein the fluid and the photopolymer resin form a fluid-fluid interface within the vat, wherein the fluid is treated with an inert gas and is between the inner surface of the transparent portion of the vat and the photopolymer resin, and wherein gasses diffuse at the fluid-fluid interface between the fluid and the photopolymer resin to remove oxygen from the photopolymer resin and into the fluid;
a pump configured to circulate the fluid through the first conduit, the vat, and the second conduit, such that the fluid flows between the fluid-fluid interface and the inner surface of the transparent portion of the vat, and from the inlet region of the vat to the outlet region of the vat;
a light source positioned directly or indirectly adjacent to the outer surface of the vat and configured to project light incident on the outer surface of the transparent portion of the vat such that the light is incident on the fluid-fluid interface; and
a printing platform and an actuator, wherein the printing platform is coupled to the actuator and is configured to be immersed in the photopolymer resin, wherein the actuator is configured to alter an orientation of the printing platform within the photopolymer resin.