A device for generating a spray of mist or fine droplets includes a spinning rotor within a mist chamber. The rotor has inner walls which taper conically outwardly from the open bottom of the rotor to a hole near the top of the rotor. Liquid is pumped by a finger actuated pump from a cartridge module...http://www.google.de/patents/US5346132?utm_source=gb-gplus-sharePatent US5346132 - Mist generator
