Patent ID: 6482326
Filing Date: 2002-11-19
Classification: A47J,B01D,Y10S

Abstract:
A method of filtering impurities from used cooking oil, comprising:flowing said used cooking oil through a filter, said filter comprising: (i) a filter envelope including a first panel and a second panel, said first panel being a filter pad having a first permeability and said second panel being a filter paper having a second permeability, wherein said first permeability is greater than said second permeability, and each of said filter pad and said filter paper includes a peripheral region, wherein a portion but not all of the first and second peripheral regions are fused to each other, and the non-fused portions of the peripheral regions of said filter pad and said filter paper provides an opening into said envelope, and wherein one of said filter pad and said filter paper includes an opening for receiving a conduit means for conducting a liquid from said filter; and (ii) a spacer grid contained within said filter envelope, said spacer grid including a first surface in contact with said filter pad and a second surface in contact with said filter paper, whereby the flow of said used cooking oil is directed away from said filter paper and through said filter pad to filter impurities from said used cooking oil.