Methods and apparatus for production of three-dimensional object

Details Methods and apparatus for production of three-dimensional object Methods and apparatus for production of three-dimensional object

1988-04-18

1991-05-14

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

1562733, 1562735, 264308, 4251744, 427 431, 427 541, B29C 3508

Patent

active

050154249

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, stress, birdnesting and other distortions, 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: 4752498 (1988-06-01), Fudim
patent: 4801477 (1989-01-01), Fudim
Herbert "Solid Object Generation", J. App. Photo. Eng., vol. 8, No. 4, Aug. 1982, pp. 185-188.
Kodama "Automatic Method for Fabricating a Three-Dimensional Plastic Model with Photo-Hardening Polymer", Rev. Sci. Instrum., 52(11), Nov. 1981, pp. 1770-1773.

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