Patent ID: 6734801
Filing Date: 2004-05-11
Classification: B01D,F24F

Abstract:
An alarm apparatus for use with an air filter, said apparatus comprising:a filament stretched across at least one portion of an air filter frame of said air filter, wherein said at least one portion comprises a first locus and a second locus located opposite said first locus, such that said filament is attached at a first end of said filament to said air filter frame at said first locus; a switch attached to a second end of said filament, said switch mounted to said air filter at said second locus of said at least one portion of said air filter frame; and an alarm that communicates with said switch, such that when said air filter becomes loaded with debris, said air filter deflects thereby causing a force to be exerted on said filament, which in turn triggers said switch to transmit a signal to said alarm indicating that said air filter requires proper attention thereof.