Air treating apparatus

Claim 1

AIR TREATING APPARATUS FOR USE WITH A SYSTEM INCLUDING AN AIR MOVING FAN, THE APPARATUS COMPRISING: A HOUSING HAVING THEREIN A FIRST AIR INLET OPENING ADAPTED FOR CONNECTION TO THE OUTLET SIDE OF THE FAN, A SECOND AIR INLET OPENING ADAPTED TO SUPPLY AMBIENT AIR TO THE APPARATUS, AN AIR OUTLET OPENING ADAPTED FOR CONNECTION TO THE INLET SIDE OF THE FAN, AND A VAPORIZING CHAMBER ADAPTED TO CONTAIN A QUANTITY OF VAPORIZABLE AIR TREATING MATERIAL TO BE EVAPORATED INTO A STREAM OF AIR PASSED THROUGH THE CHAMBER; A FIRST OPENING CONNECTING SAID FIRST INLET TO SAID VAPORIZING CHAMBER, A SECOND OPENING CONNECTING SAID SECOND INLET TO SAID VAPORIZING CHAMBER, AND A THIRD OPENING CONNECTING SAID VAPORIZING CHAMBER TO SAID OUTLET; VALVE MEANS COOPERABLE WITH SAID FIRST, SECOND, AND THIRD OPENINGS AND MOVABLE THROUGH A PLURALITY OF POSITIONS WITH RESPECT THERETO TO VARY THE EFFECTIVE AREAS OF SAID FIRST, SECOND AND THIRD OPENINGS TO SELECT THE AMOUNT OF AIR PASSED THROUGH SAID VAPORIZING CHAMBER; AND VALVE OPERATING MEANS CONNECTED IN CONTROLLING RELATIONSHIP WITH SAID VALVE MEANS AND SELECTIVELY OPERABLE TO POSITION SAID VALVE MEANS TO THEREBY DETERMINE THE EFFECTIVENESS OF THE TREATING APPARATUS, SAID VALVE MEANS AND SAID VALVE OPERATING MEANS BEING CHARACTERIZED IN THAT THEY ARE OPERABLE TO OPEN SAID FIRST OPENING ONLY WHEN SAID SECOND OPENING IS CLOSED AND ARE OPERABLE TO OPEN SAID SECOND OPENING ONLY WHEN SAID FIRST OPENING IS CLOSED.