Blaeker

Claim 1

A DOUBLE ACTION AIR DISINFECTING APPLIANCE, COMPRISING A TUBULAR CASING HAVING AN INLET AT ONE END AND AN OUTLET AT THE OTHER END, SAID CASING HAVING A VENTURI-TYPE INNER CASING INCLUDING A CONICAL REFLECTING SURFACE AT SAID OUTLET END, AN ULTRA-VIOLET LAMP POSITIONED AXIALLY OF SAID CASING, AN AIR CIRCULATING MEANS WITHIN SAID CASING CAUSING MOVEMENT OF AIR AGAINST SAID ULTRA-VIOLET LAMP TO BE DISINFECTED INSIDE SAID APPLIANCE, A HELICAL LIGHT SHIELDING MEMBER MOUNTED ON SAID LAMP, SAID HELICAL SHEILDING MEMBER COMPRISING AN ANNULAR SPRING-LIKE ELEMENT OF CONSIDERABLE RADICAL EXTENT BUT OF A SIDE SMALLER IN OUTER DIAMETER THAN SAID CONICAL OUTLET AND TERMINATING IN A SOLID END MEMBER, SAID SHIELDING MEMBER INCREASING IN DIAMETER TOWARD THE OUTLET OF SAID VENTURI-TYPE CASING, SAID SHIELDING MEMBER BEING ARRANGED TO PREVENT EXPOSURE OF DIRECT RAYS OF LIGHT FROM SAID ULTRA-VIOLET LAMP TO AN OBSERVER, SAID CONICAL REFLECTING OUTLET CAUSING RAYS REFLECTED FROM SAID ULTRA-VIOLET LAMP TO PASS OUTWARDLY OF SAID APPLIANCE AND DISINFECT THE AIR OUTSIDE SAID APPLIANCE BY REFLECTED RAYS IN ANNULAR BEAM FORM.