Ariel J Eugenio

US Patent:

20040003909, Jan 8, 2004

Filed:

Apr 10, 2003

Appl. No.:

10/412567

Inventors:

Max Schlienger - Napa CA, US
Michael Baldwin - Napa CA, US
Ariel Eugenio - Benicia CA, US

International Classification:

B22D029/00

US Classification:

164/132000, 164/345000

Abstract:

The removal of ceramic material from the interior of cast metallic components is accomplished in a closed system. A vessel within the system is filled with a chemical leaching fluid that immerses the cast component having the ceramic material and/or ceramic cores therein. The leaching fluid is superheated and boiling is controlled by varying the pressure within the closed system without changing the molecules in the vessel.

US Patent:

20110068517, Mar 24, 2011

Filed:

Aug 9, 2010

Appl. No.:

12/853228

Inventors:

Michael Christopher Maguire - Napa CA, US
Michael Dean Baldwin - Napa CA, US
Max Eric Schlienger - Napa CA, US
Ariel Eugenio - Benicia CA, US

International Classification:

C04B 33/32
B28B 7/34

US Classification:

264610, 249 62, 249 61

Abstract:

An article produced using, among other techniques, free-form fabrication having a binder matrix and particles can be supported during a temperature processing, such as burn-out of the binder matrix, with a support composition to maintain geometry and/or alleviate changes in geometry of the article. The support composition can take a variety of forms such as foams, two phase materials, plastic powders, carbon powders, etc. The support material is sacrificed during the thermal processing, such as through decomposition. Such a decomposition can occur when the support composition evolves into a carbonaceous structure. The support composition can also oxidize to a gas, melt, or vaporize, among other types of sacrificial action.