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:
Apr. 25, 1978
Filed:
Jan. 26, 1976
Willard D Kaiser, Grove City, OH (US);
International Lead Zinc Research Organization, Inc., New York, NY (US);
Abstract
In a hot chamber method of pore-free die casting in which a reactive gas flushes non-reactive gas such as air from a die before a material is cast therein, the material displaces non-reactive gas from the gooseneck and nozzle through which the die is filled before the reactive gas flushes the die. The material then does not push non-reactive gas into the die as it fills the die. Apparatus for practicing the method comprises servo-control means for filling the gooseneck and nozzle with the material before the reactive gas flushes the die to displace non-reactive gas therefrom and then filling the die with the material after the reactive gas has flushed the die.