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:
Dec. 06, 1977
Filed:
Jul. 26, 1976
Applicant:
Inventor:
Henri Carbonnel, Antony, FR;
Assignee:
Groupement pour les Activites Atomiques et Avancees 'GAAA' S.A., Le Plessis-Robinson, FR;
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164 61 ; 164256 ; 164312 ;
Abstract
Apparatus comprising a crucible, a level-determining tank, a vacuum pump, an injection cylinder, a mould and appropriate interconnecting pipes. Molten metal is kept under vacuum throughout except that in a modification a gas may be deliberately introduced into the mould to provide a surface treatment of the casting.