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. 15, 1978
Filed:
Nov. 03, 1976
Applicant:
Inventors:
Pawel Murza-Mucha, Warsaw, PL;
Zbigniew Koszarewski, Raszyn, PL;
Wojciech Ostaszewski, Warsaw, PL;
Stanislaw Peksa, Warsaw, PL;
Assignee:
Politechnika Warszawska, Warsaw, PL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164132 ; 106 / ; 106 389 ; 106209 ; 106214 ; 164 36 ;
Abstract
Composition for production of cores and casting molds comprises 100 parts by weight of grain base, particularly quartz sand, 0.5 - 30 parts of alkal metal hydroxides, 1 - 40 parts of alkali metal carbonates, 1 - 15 parts of water as well as 0.2 - 10 of known hydrophilic binders. The composition according to the invention is removed from the cast or mold by subjecting the core in the cast or mold to the action of solvent, particularly water, preferably by dipping.