William R Hendrickson

US Patent:

39844471, Oct 5, 1976

Filed:

Jul 1, 1974

Appl. No.:

5/484430

Inventors:

Frank L. Cooper - Leesburg IN
Ray C. Fatout - Indianapolis IN
William S. Hendrickson - Indianapolis IN

Assignee:

C. H. F., Inc. - Indianapolis IN

International Classification:

C11B 300
C11B 310

US Classification:

260420

Abstract:

A method of reconstituting used cooking oil which includes the steps of gravity separation of constituents of high specific gravity under elevated temperatures and preferably a light vacuum, decanting the cleared oil, then without artificially-induced heating or cooling, passing the decanted oil through a fibrous filter such as, for instance, a string-wound or other cartridge-type filter and subsequently passing the oil through a Fuller's Earth (or equivalent) cartridge-type filter, thereafter adding a quantity of finely-divided bleaching clay to the filtered oil, further elevating the temperature and holding the mixture in a sterilizable container at the elevated temperature while agitating it, adding saturated steam and maintaining a vacuum for a period of approximately one-half hour, then cooling and filtering the mixture into a vacuumized atmosphere to remove the clay, and then cooling the filtered oil to a handling temperature and filling it into suitable containers for marketing it.