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:
Jul. 14, 1998
Filed:
Aug. 30, 1996
Applicant:
Inventors:
Donald R Parille, South Windsor, CT (US);
Earle Arthur Ault, South Windsor, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; B08B / ; B08B / ;
U.S. Cl.
CPC ...
164132 ; 134 2218 ; 134 24 ; 134 30 ;
Abstract
A ceramic core is removed from an investment casting by directing a stream of high pressure alkali solution between about 5,000 psi (345 bar) and about 10.000 psi (690 bar) at the core to loosen and dissolve the core.