Metal founding – Process – Shaping a forming surface
Patent
1998-09-28
2000-08-29
Pyon, Harold
Metal founding
Process
Shaping a forming surface
164517, 164518, 164519, B22C 912, B22C 102
Patent
active
061093327
ABSTRACT:
A technique for smoothing and otherwise changing the surfaces of porous bodies, such as ceramic molds, made using layer manufacturing processes, such as three dimensional printing processes. The surface finish of the mold can be smoothed by casting a slip of fine particles onto the surface to form a generally level, and preferably non-conformal, coating on the surfaces. In general, the fine particles of the slip are caused to be filtered out from the liquid, so that the fine particles come to rest at or near the surface of the body formed. They are typically, preferentially drawn toward concave regions of the surface, as compared to convex regions, thereby forming a non-conformal coating. Furthermore, other surface properties can be changed by tailoring the slip to produce those properties. The coating can be applied to external surfaces, and internal surfaces, such as would become the surface against which a molded part would be formed.
REFERENCES:
patent: 2671741 (1954-06-01), Duvall
patent: 2985939 (1961-05-01), Brockman
patent: 3302655 (1967-02-01), Sasaki et al.
patent: 3451401 (1969-06-01), Levinson
patent: 3868267 (1975-02-01), Gazza et al.
patent: 3887392 (1975-06-01), Tang
patent: 3990906 (1976-11-01), Johnston et al.
patent: 3999188 (1976-12-01), Yamada
patent: 4122458 (1978-10-01), Paranjpe
patent: 4129875 (1978-12-01), Ito et al.
patent: 4158204 (1979-06-01), Kuhn et al.
patent: 4159357 (1979-06-01), Grunke
patent: 4235246 (1980-11-01), Weiss
patent: 4247508 (1981-01-01), Housholder
patent: 4294805 (1981-10-01), Hodgson et al.
patent: 4299239 (1981-11-01), Weiss et al.
patent: 4420446 (1983-12-01), Wieder et al.
patent: 4472668 (1984-09-01), Mutschler et al.
patent: 4504322 (1985-03-01), Adwalpalker et al.
patent: 4560586 (1985-12-01), Tolle et al.
patent: 4561902 (1985-12-01), Lee
patent: 4575330 (1986-03-01), Hull
patent: 4579380 (1986-04-01), Zaremsky et al.
patent: 4636341 (1987-01-01), Murley
patent: 4642653 (1987-02-01), Ito et al.
patent: 4664948 (1987-05-01), Moore et al.
patent: 4665492 (1987-05-01), Masters
patent: 4675216 (1987-06-01), DuForest et al.
patent: 4735757 (1988-04-01), Yamamoto et al.
patent: 4791022 (1988-12-01), Graham
patent: 4791434 (1988-12-01), Wills
patent: 4818562 (1989-04-01), Arcella et al.
patent: 4863638 (1989-09-01), Deckard
patent: 4929402 (1990-05-01), Hull
patent: 4931104 (1990-06-01), Burke
patent: 4935055 (1990-06-01), Aghajanian et al.
patent: 4988202 (1991-01-01), Nayar et al.
patent: 5016683 (1991-05-01), Latka
patent: 5053090 (1991-10-01), Beaman et al.
patent: 5059266 (1991-10-01), Yamane et al.
patent: 5076869 (1991-12-01), Bourell et al.
patent: 5079974 (1992-01-01), Weiss et al.
patent: 5106654 (1992-04-01), Isenberg
patent: 5121329 (1992-06-01), Crump
patent: 5126529 (1992-06-01), Weiss et al.
patent: 5136515 (1992-08-01), Helinski
patent: 5147587 (1992-09-01), Marcus et al.
patent: 5189781 (1993-03-01), Weiss et al.
patent: 5203944 (1993-04-01), Prinz et al.
patent: 5204055 (1993-04-01), Sachs et al.
patent: 5207371 (1993-05-01), Prinz et al.
patent: 5268036 (1993-12-01), Neubauer et al.
patent: 5278442 (1994-01-01), Prinz et al.
patent: 5281789 (1994-01-01), Merz et al.
patent: 5286573 (1994-02-01), Prinz et al.
patent: 5301415 (1994-04-01), Prinz et al.
patent: 5304863 (1994-04-01), Prinz et al.
patent: 5312456 (1994-05-01), Reed et al.
patent: 5332023 (1994-07-01), Mills
patent: 5340656 (1994-08-01), Sachs et al.
patent: 5387380 (1995-02-01), Cima et al.
patent: 5876455 (1989-10-01), Sanderson et al.
R. Sweet, "High-Frequency Recording with Electrostatically Deflected Ink Jets", (cont.) The Review of Scientific Instruments, vol. 36, No. 2, pp. 131-136, 1965.
H. Kodama, "Automatic Method for Fabricating a Three-Dimensional Plastic Model with Photo-(cont.) Hardening Polymer", Review of Scientific Instruments, vol. 52, No. 11, Nov. 1981.
T. Wohlers, "Creating Parts by the Layers", Cadence, pp. 73-76, Apr. 1989.
Database WPI, Section PQ, Week 9103, Derwent Publications Ltd., London, GB, p. 43, (cont.) AN 91-020238 & SU-A-1 563 787 (Suchov, A.G.), May 15, 1990.
Bredt James F.
Cima Michael J.
Khanuja Satbir
Sachs Emmanuel M.
Lin I.-H.
Massachusetts Institute of Technology
Pyon Harold
Weissburg Steven J.
LandOfFree
Ceramic mold finishing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ceramic mold finishing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic mold finishing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1239026