Abstract: A hand-held mixing device comprising an electric motor, an elongated shaft extending from the motor, a housing enclosing the motor and a major portion of the shaft, a blade at the free end of the shaft, a heating element extending from the housing, the heating element formed to have at least one coil surrounding the blade, the coil being dimensioned to be spaced from the outer edge of the blade and to form a generally annular gap thereabout. The motor and heating element are electrically connectable to an electrical power source wherein the electrical power to the motor and to the heating element are independently controllable.

Abstract: A lid assembly for a portable water treatment device of the type including a vessel with an opened upper end and a replaceable filter cartridge adapted to be contained therein. A lid assembly is adapted to be attached to the opened upper end of the vessel above the replaceable filter cartridge and operable to monitor the number of times the water treatment device is used. The lid assembly includes a housing having a central aperture therethrough communicating with the filter cartridge. A gate member is reciprocally movable between a position closing the aperture in the housing and a position opening the aperture in the housing. In the opened position, water to be treated may be poured into the filter cartridge through the aperture. Indicator means are provided and are movable incrementally in response to movement of the gate member. The indicator means move one increment during a cyclic movement of the gate member from the closed position to the opened position and back to the closed position.