Apparatus for freeform fabrication of a three-dimensional object

Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means

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264308, 4251311, 425375, 425465, 425466, B29C 4102, B29C 4136

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060301996

ABSTRACT:
An improved apparatus and method for forming a three-dimensional object by planar deposition of forming materials includes containers for holding molten forming materials, mechanical piston or screw members in the containers for pressurizing the molten forming materials in each of the containers, and an adjustable planar nozzle mechanism coupled to the containers through which the pressurized molten forming materials flow to form variable width planar jets that are deposited in layers onto a substrate movable along three axes to form the three-dimensional object. The adjustable planar nozzle mechanism includes cooperating position controllable plates for forming a variable width planar nozzle opening. The edges of the planar nozzle opening are advantageously non-parallel at the ends of the nozzle opening to ensure uniform thickness of the deposited planar jets.

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