Filter cleaning device

Claim 1

A portable filter cleaning device for cleaning a filter adapted to clean air flowing through a filter media into a chamber therein and having at least one end with an opening to said chamber, said filter cleaning device comprising; a. a tank adapted to contain gaseous fluid under pressure; b. means on said tank for communication with a source of gaseous fluid under pressure for permitting filling of said tank to a pre-determined pressure; c. a conduit having an inlet connected to said tank in flow communication therewith, said conduit having an open outlet end; d. a valve in said conduit controlling flow therethrough, said valve and conduit being of sizes permitting rapid fluid flow therethrough when the valve is open; e. a shield fixed on said conduit adjacent the open outlet end thereof, said shield having a sUrface extending outwardly from said conduit for sealingly engaging said filter around the end opening thereof with said open outlet of the conduit communicating through said filter end opening with an interior chamber of said filter, said filter being held in place only by force applied to the shield by a user to effect said sealing engagement and hold the shield engaged with the filter open end and the other filter end engaged with a supporting surface; f. said shield being a concave member having an overhanging portion extending outwardly and curved downwardly beyond the filter whereby gaseous fluid under pressure directed from said conduit into the filter chamber passes outwardly through the filter media below said overhanging shield portion and downwardly and outwardly toward the supporting surface.