Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1991-05-02
1992-08-11
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
118620, 118712, 156 64, 1562728, 1562733, 156378, 1563796, 2504921, 264 401, 264308, 364476, 364522, 365107, 425135, 4251744, 427 8, 427 531, 427 541, B29C 3508, B29C 4152, B29C 6700
Patent
active
051376628
ABSTRACT:
An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, information defining the object being specially processed to reduce curl and distortion, and increase resolution, strength, accuracy, speed and economy of reproduction even for rather difficult object shapes, the successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process.
REFERENCES:
patent: 2775758 (1956-12-01), Munz
patent: 4575330 (1986-03-01), Hull
patent: 4863538 (1989-09-01), Deckard
Albert David J.
Almquist Thomas
Freed Raymond S.
Harlow Richard A.
Hull Charles W.
3-D Systems, Inc.
Tentoni Leo B.
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