Layer thickness control for stereolithography utilizing...

Plastic and nonmetallic article shaping or treating: processes – Stereolithographic shaping from liquid precursor

Reexamination Certificate

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C264S040100, C264S408000, C425S135000, C425S174400, C425S375000

Reexamination Certificate

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06955783

ABSTRACT:
An apparatus and method for controlling the surface level of a liquid residing within a relatively vertically stationary workpiece support platform disposed within a reservoir for use in stereolithographic processes wherein a layered object or structure is formed by selectively curing portions of the liquid to at least a semisolid state in multiple, at least partially superimposed layers. Providing precise control of liquid depth over the vertically stationary platform as well as focusing of a laser beam for curing the liquid at the varying surface levels thereof relative to the vertically stationary platform is effected using a laser range finder system controlled by a computer used to control the stereolithographic process in a closed loop fashion.

REFERENCES:
patent: 4575330 (1986-03-01), Hull
patent: 4996010 (1991-02-01), Modrek
patent: 4999143 (1991-03-01), Hull et al.
patent: 5015424 (1991-05-01), Smalley
patent: 5058988 (1991-10-01), Spence
patent: 5059021 (1991-10-01), Spence et al.
patent: 5059359 (1991-10-01), Hull et al.
patent: 5071337 (1991-12-01), Heller et al.
patent: 5096530 (1992-03-01), Cohen
patent: 5104592 (1992-04-01), Hull et al.
patent: 5123734 (1992-06-01), Spence et al.
patent: 5130064 (1992-07-01), Smalley et al.
patent: 5133987 (1992-07-01), Spence et al.
patent: 5141680 (1992-08-01), Almquist et al.
patent: 5143663 (1992-09-01), Leyden et al.
patent: 5164128 (1992-11-01), Modrek et al.
patent: 5173220 (1992-12-01), Reiff et al.
patent: 5174931 (1992-12-01), Almquist et al.
patent: 5182055 (1993-01-01), Allison et al.
patent: 5182056 (1993-01-01), Spence et al.
patent: 5182715 (1993-01-01), Vorgitch et al.
patent: 5184307 (1993-02-01), Hull et al.
patent: 5192469 (1993-03-01), Smalley et al.
patent: 5192559 (1993-03-01), Hull et al.
patent: 5209878 (1993-05-01), Smalley et al.
patent: 5234636 (1993-08-01), Hull et al.
patent: 5238639 (1993-08-01), Vinson et al.
patent: 5248456 (1993-09-01), Evans, Jr. et al.
patent: 5256340 (1993-10-01), Allison et al.
patent: 5264061 (1993-11-01), Juskey et al.
patent: 5267013 (1993-11-01), Spence
patent: 5278442 (1994-01-01), Prinz et al.
patent: 5321622 (1994-06-01), Snead et al.
patent: 5345391 (1994-09-01), Hull et al.
patent: 5358673 (1994-10-01), Heller et al.
patent: 5447822 (1995-09-01), Hull et al.
patent: 5484314 (1996-01-01), Farnworth
patent: 5495328 (1996-02-01), Spence et al.
patent: 5501824 (1996-03-01), Almquist et al.
patent: 5545367 (1996-08-01), Bae et al.
patent: 5693144 (1997-12-01), Jacobs et al.
patent: 5695707 (1997-12-01), Almquist et al.
patent: 5705117 (1998-01-01), O'Connor et al.
patent: 5776409 (1998-07-01), Almquist et al.
patent: 5779967 (1998-07-01), Hull
patent: 5840239 (1998-11-01), Partanen et al.
patent: 5855718 (1999-01-01), Nguyen et al.
patent: 5855836 (1999-01-01), Leyden et al.
patent: 5897825 (1999-04-01), Fruth et al.
patent: 5902537 (1999-05-01), Almquist et al.
patent: 5902538 (1999-05-01), Kruger et al.
patent: 5904889 (1999-05-01), Serbin et al.
patent: 5943235 (1999-08-01), Earl et al.
patent: 5945058 (1999-08-01), Manners et al.
patent: 6251488 (2001-06-01), Miller et al.
patent: 6259962 (2001-07-01), Gothait
patent: 6268584 (2001-07-01), Keicher et al.
patent: 6391251 (2002-05-01), Keicher et al.
patent: 6482576 (2002-11-01), Farnworth et al.
patent: 6537482 (2003-03-01), Farnworth
patent: 6544465 (2003-04-01), Farnworth et al.
patent: 6544902 (2003-04-01), Farnworth
patent: 6549821 (2003-04-01), Farnworth et al.
patent: 2002/0171177 (2002-11-01), Kritchman et al.
patent: 2003/0003179 (2003-01-01), Farnworth et al.
patent: 2003/0003180 (2003-01-01), Farnworth et al.
patent: 2003/0003380 (2003-01-01), Farnworth et al.
patent: 2003/0003405 (2003-01-01), Farnworth et al.
patent: 2003/0043360 (2003-03-01), Farnworth
patent: 2003/0068584 (2003-04-01), Farnworth et al.
patent: 2003/0090006 (2003-05-01), Farnworth
patent: 2003/0093173 (2003-05-01), Farnworth et al.
patent: 2003/0151167 (2003-08-01), Kritchman et al.
patent: 2003/0155693 (2003-08-01), Farnworth et al.
patent: 2003/0207213 (2003-11-01), Farnworth
patent: 2003/0209837 (2003-11-01), Farnworth
Miller et al., “Maskless Mesoscale Materials Deposition”, Deposition Technology, Sep. 2001, pp. 20-22.
Miller, “New Laser-Directed Deposition Technology”, Microelectronic Fabrication, Aug. 2001, p. 16.
Webpage. Object Prototyping the Future, Objet FullCure700 Series, 1 page, undated.
Webpage, Object Prototyping the Future, How it Works, 2 pages, undated.
U.S. Appl. No. 10/663,402, filed Sep. 16, 2003, entitled “Processes for Facilitating Removal of Stereolithographically Fabricated Objects From Platens of Stereolithographic Fabrication Equipment, Object Release Elements fro Effecting Such Processes, Systems and Fabrication Processes Employing the Object Release Elements, and Objects which have been Fabricated Using the Object Release Elements”, inventor Farnworth et al.
U.S. Appl. No. 10/672,098, filed Sep. 26, 2003, entitled “Apparatus and Method For Use in Stereolithgraphic Processing of Components and Assemblies”, inventor Warren M. Farnworth.

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