Constant-rate volatile material dispensing device

A device for supplying volatile materials for distribution in the atmosphere, comprising:

• a supply of at least one volatile material;
• a replaceable canister comprising a reservoir and a U-shaped outlet tube, wherein said reservoir has a reservoir interior surface defining a cavity configured to accommodate said supply of at least one volatile material, and wherein said U-shaped outlet tube comprises a tube inner leg, a tube outer leg, and a tube crosspiece, and wherein said tube inner leg is connected to a lower area of said reservoir and is in fluid communication with said cavity defined by said reservoir interior surface, and wherein said tube outer leg of said U-shaped outlet tube is open to said atmosphere;
• wherein said reservoir comprises a reservoir outer wall, a reservoir top wall, and a reservoir bottom wall, and wherein said reservoir outer wall has a degree of flexibility;
• and
• an external housing comprising a generally cylindrical housing side wall, a generally circular housing bottom wall, housing interior surfaces defining a housing interior chamber, comprises a lid hingedly connected to an upper area of said housing side wall, and a powered actuating unit, wherein said housing interior chamber is sized and configured to receive said replaceable canister, and wherein said powered actuating unit is configured to apply pressure to said reservoir outer wall.