Patent ID: 7776215
Filing Date: 2010-08-17
Classification: B01D,F01M

Abstract:
1. A filter cartridge, comprising: a filter media; and a valve actuating protrusion positioned to actuate a valve of a filter housing with which the cartridge is intended to be used, the valve actuating protrusion having a radially outward facing sliding surface that is configured to engage with the valve, the radially outward facing sliding surface being tapered so that a first portion of the radially outward facing sliding surface that engages the valve is wider than a second portion of the radially outward facing sliding surface that engages the valve, and the radially outward facing sliding surface is configured so that the first portion engages the valve before the second portion, further comprising an end plate connected to the filter media, wherein the end plate is an upper end plate, and the valve actuating protrusion extends downwardly from the upper end plate.