Apparatus for freeform fabrication of a three-dimensional object
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United States of America Patent
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Feb 29, 2000
Grant Date -
N/A
app pub date -
Feb 9, 1998
filing date -
Feb 9, 1998
priority date (Note) -
Expired
status (Latency Note)
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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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