Patent ID: 8021618
Filing Date: 2011-09-20
Classification: B01D

Abstract:
1. A fragrance and auditory emission apparatus comprising: a fragrance media, said fragrance media is supported by a surrounding frame to which a periphery of said fragrance media is secure; and an audible signaling device, said audible signaling device is inserted through and retained by said surrounding frame, said surrounding frame defines a first planar surface, a second planar surface, and an integral lattice under which said fragrance media is contained, said first planar surface of said surrounding frame includes a plurality of open sections divided by support members forming said lattice, said support members are each defined as having a V-shaped configuration, said support members are joined by a bridge disposed therebetween about a linearly-elongated centerline of said surrounding frame, wherein said bridge has a bore formed centrally therethrough, wherein said bore is inserted with said audible signaling device, said audible signaling device emits an auditory impression or signal when negative pressure drop across an air filter increases to a predetermined value, thereby indicating a dirty or clogged air filter, said audible signaling device comprises an elongated tubular body which includes an upper, circular hollow flange mounted thereto on an upstream end, said flange has a centered aperture on a top portion and a centered aperture at a bottom portion thereof, wherein said flange includes upper and lower sidewalls and axially spaced apart sidewalls so as to form a resonating chamber, said tubular body has a restricted longitudinal cavity extending from a proximal end to a distal end thereof, wherein said cavity decreases in diameter approaching said distal end, said distal end of said tubular body tapers substantially into an annular projection so as to form a bougie, wherein said bougie is inserted through said bore of said bridge and penetrates a filter medium of the air filter, wherein said audible signaling device further comprises a fastener, said fastener is connected to said bougie so as to removably secure said fragrance and auditory emission apparatus to the air filter, said audible signaling device emits a shrill tone or whistling noise when the air filter becomes inefficient or when the air filter becomes excessively obstructed with particulates, and wherein said fastener defines an elongated, cylindrical configuration having a centered hole formed therethrough, wherein said centered hole has a diametric measure dimensionally accommodating an outer circumferential surface of said distal end of said tubular body, said fastener is held onto said bougie via mechanical interference, said fastener includes a circular flange molded integral with an inner circumferential wall of said fastener at a rearward end thereof, said circular flange extends upwardly towards a frontal end of said fastener, said circular flange functions as a stop to impede said bougie from extending past said fastener when said fastener is secured to said bougie.