The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2004
Filed:
Apr. 10, 2003
Applicant:
Inventors:
Max Eric Schlienger, Napa, CA (US);
Michael D. Baldwin, Napa, CA (US);
Ariel Eugenio, Benicia, CA (US);
Assignee:
Rolls-Royce Corporation, Indianapolis, IN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22D 2/900 ;
U.S. Cl.
CPC ...
B22D 2/900 ;
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.