초록 ▼

A filter for removing undesired materials from a fluid, such as used cooking oil, for example, includes a filter envelope including first and second panels. The first panel has a permeability which is greater than that of the second panel. The first panel of the filter envelope may be formed from a

A filter for removing undesired materials from a fluid, such as used cooking oil, for example, includes a filter envelope including first and second panels. The first panel has a permeability which is greater than that of the second panel. The first panel of the filter envelope may be formed from a filter pad and the second panel from a filter paper, and may enclose a metal spacer grid. When the filter is connected to a pump for drawing the oil through the filter, the flow of the oil is directed selectively through the filter pad, whereby undesired materials are removed from the oil. The filter provides for efficient flow of the oil to be filtered while removing undesired materials therefrom.

대표청구항 ▼

[ What is claimed is:] [1.]1. In a filter for removing materials from a fluid, the combination comprising:(i) a filter envelope consisting essentially of a first panel having a first peripheral region and a second panel having a second peripheral region, said first panel being a filter pad having a

[ What is claimed is:] [1.]1. In a filter for removing materials from a fluid, the combination comprising:(i) a filter envelope consisting essentially of a first panel having a first peripheral region and a second panel having a second peripheral region, said first panel being a filter pad having a first permeability and a second panel being a filter paper having a second permeability, wherein said first permeability is greater than said second permeability wherein a portion but not all of the first and second peripheral regions are fused to each other, leaving non-fused portions of the first and second peripheral regions, and the non-fused portions of the first and second peripheral regions 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.