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:
May. 02, 1978
Filed:
Feb. 05, 1976
Applicant:
Inventors:
Alfred Steinegger, Venthone, CH;
Robert Moser, Steg, CH;
Assignee:
Swiss Aluminium Ltd., Chippis, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
266 88 ; 266215 ; 266220 ;
Abstract
A metal melt is filtered by causing the melt to flow successively into a filter chamber, downwards through the filter chamber, into a riser chamber, upwards through the riser chamber, and out of the riser chamber, and simultaneously introducing a counter-current flow of gas into the filter chamber, while the filter chamber contains a loose bed of granulate, whereas in the riser chamber there is no granulate nor is gas introduced therein.