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INVENTORS: Khoshevis; Behrokh, Los Angeles, CA
ASSIGNEES: University of Southern California, Los Angeles, CA
U.S. CLASS: 425/112
ABSTRACT: An additive fabrication apparatus using a fluid construction material which can be solidified, and including a fluid material extrusion assembly including trowels defining first and second surfaces, a first nozzle for delivering fluid material to a predetermined location, a first control for moving the extrusion assembly along a predetermined path defining an enclosed area, a first supply for delivering fluid material to the extrusion assembly to extrude the material from the first nozzle in a layer as the first nozzle is moved along the path, with the first and second surfaces moving with the first nozzle to produce a wall of the extruded material forming the enclosed area with a shaped outer surface and a shaped top surface, a second nozzle for delivering fluid material to the enclosed area, a second control for moving the second nozzle to position the second nozzle at the enclosed area, and a second supply for delivering fluid material to the second nozzle to fill in the enclosed area. A metho d of additive fabrication, which can be automated.XX
