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:
Sep. 04, 1984
Filed:
Jan. 20, 1983
Applicant:
Inventor:
Richard C Cooke, Jr, North Riverside, IL (US);
Assignee:
Acme Resin Corporation, Forest Park, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B28B / ;
U.S. Cl.
CPC ...
106 383 ; 106 3835 ; 106 387 ; 106 84 ; 164527 ; 427214 ; 427215 ; 427221 ; 428404 ; 428407 ; 523142 ; 523145 ;
Abstract
A process is provided for treating impure silica-containing sands to make them more suitable for foundry use. The sands are treated with aqueous alkali metal silicate solutions and the resulting mixture is heated before the sands are coated with a resin binder. Foundry cores and molds prepared with these treated sands show improved hot and cold tensile strengths.