Additive fabrication apparatus and method

Details Additive fabrication apparatus and method Additive fabrication apparatus and method

1995-02-03

1996-06-25

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

And means to form or reshape preform

425150, 425224, 425375, 425449, B29C 4792

Patent

active

055294715

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 method of additive fabrication, which can be automated.

REFERENCES:
patent: 4734021 (1988-03-01), Maddock
patent: 4749347 (1988-06-01), Valavaara
patent: 5059266 (1991-10-01), Yamane et al.
patent: 5260009 (1993-11-01), Penn

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