Patent ID: 8142570
Filing Date: 2012-03-27
Classification: B08B

Abstract:
1. For a filter element holding collected particles, a method for extracting at least some of said collected particles from said filter element; wherein said method comprises the steps of: (1.a) providing an extraction device comprising an extraction chamber, a discharge bore for said extraction chamber, a piston in said extraction chamber, and a filter support for said filter element; wherein said filter support is located in said extraction chamber; (1.b) placing said filter element on said filter support; wherein a portion of said extraction chamber between said piston and said filter element on said filter support is operable to contain compressed air, wherein said compressed air can be compressed with said piston; (1.c) adding an extraction liquid to at least one of said extraction chamber and said filter element; (1.d) forming a particle-laden extraction liquid by vibrating said filter element an amount sufficient for moving at least some of said collected particles from said filter element and into said extraction liquid; (1.e) after finishing step (1.d), using said piston for forming a compression-extracted portion of said particle-laden extraction liquid by compressing said filter element against said filter support an amount sufficient for urging out of said filter element at least some of said particle-laden extraction liquid; and (1.f) using said discharge bore for conveying at least part of said compression-extracted portion of said particle-laden extraction liquid out of said extraction chamber.