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:
Nov. 27, 2018
Filed:
Sep. 10, 2013
Huttenes Albertus France, Brenouille, FR;
Stéphane Sarrazin, Ezanville, FR;
Manuel Vargas, Pont-Sainte-Maxence, FR;
Tung-Fai Lo, Angicourt, FR;
HUTTENES ALBERTUS FRANCE, Brenouille, FR;
Abstract
The invention relates to a method for manufacturing a foundry body including the preparation of a granular mixture including a polycondensed resin having modified formaldehyde, optionally incorporating an aromatic or polyaromatic during the synthesis thereof, a hardening agent, a formaldehyde sensor compound, water and optionally at least one resin selected from the group comprising tannins, natural polyphenols, and lignins, placing said granular mixture in contact with the surface of a forming tool, and insufflating a flow of gas at 50° C. to 380° C. into the granular mixture for 1 to 300 seconds, in order to ensure at least partial hardening of said mixture. The invention also relates to a method for manufacturing a molded foundry piece made of metal or a metal alloy, which includes pouring metal into at least one body (mold and/or core) thus produced; and to a foundry piece thus manufactured.