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:
Jun. 06, 1978
Filed:
Dec. 13, 1976
Applicant:
Inventors:
Adolf Hetke, Livonia, MI (US);
Kip M Bonds, Union Lake, MI (US);
Assignee:
Ford Motor Company, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428306 ; 428143 ; 428315 ; 428323 ; 428354 ; 428355 ;
Abstract
A pattern destructible on contact with a molten metal charge is given a composite coating consisting of a (1) highly tacky viscous adhesive substantially devoid of solids and having a low gas content, (2) a collection of ultra-fine refractory paticles (carbon facing sand) aligned on the surface of said adhesive. The adhesive volatilizes on contact with the casting charge while the refractory particles remain unaffected. An ultra-smooth cast surface is produced without macro crevices inherent in the surface of a destructible pattern and the mold sand is reusable without contamination by a high portion of burned sand.