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:
Aug. 04, 1998
Filed:
Jun. 28, 1996
Applicant:
Inventors:
Pheroze J Nagarwalla, St. Charles, IL (US);
Raymond F Witte, Naperville, IL (US);
Scott S Hendrie, Coldwater, MI (US);
Assignee:
Georg Fischer Disa, Inc., Oswego, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B22C / ; B22C / ; B22C / ;
U.S. Cl.
CPC ...
164 16 ; 164 21 ; 164186 ; 164201 ;
Abstract
The injection tube for injecting and gassing of foundry sand in cavities in a core box has a first passage for passing sand and a second passage for passing hardening fluid. Sand may be injected simultaneously to the introduction of hardening fluid into the cavities. Alternatively, sand may be injected prior to introduction of hardening fluid into the cavities.