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:
Jan. 22, 1985
Filed:
Jan. 07, 1983
Russell H Butler, Rockaway, NJ (US);
Edward V Limoncelli, Morristown, NJ (US);
Michael J Litwinowich, Boonton, NJ (US);
Michael L Briggs, Budd Lake, NJ (US);
Allied Corporation, Morris Township, Morris County, NJ (US);
Abstract
The invention provides a filter apparatus and method for removing inclusions from a molten metal alloy and includes a container having an inlet portion and an outlet portion. A filter bed is located within said container, interposed between said container inlet and said container outlet, and is comprised of a plurality of filter zones arranged in progressive layers. Each of the filter zones contains particles of filter material within a preselected size range, and the filter zones are successively arranged to selectively locate the largest filter particles at the container outlet and the smallest filter particles at the container inlet. Molten metal alloy is filtered by passing it through the filter bed.