Patent ID: 8580023

Claim:
A run-safe filter system for confirming installation of a qualified filter element in a housing, comprising an electrical switch, said switch having a first electrical condition in response to a qualified filter element installed in said housing, said switch having a second electrical condition in response to the absence of a qualified filter element installed in said housing, an actuator actuating said electrical switch between said first and second electrical conditions, wherein said switch is mounted to said housing, and said actuator is mounted to said qualified filter element, wherein said actuator actuates said switch to said first electrical condition when said qualified filter element is installed in said housing in a position bringing said actuator into actuating proximity to said electrical switch, and wherein said qualified filter element comprises a gasket for sealing to said housing, and said actuator comprises a magnet embedded in said gasket and actuating said electrical switch to said first condition upon said installation of said qualified filter element in said housing.