A soap dispenser can be configured to dispense an amount of foam soap, for example, upon detecting the presence of an object. The dispenser can also include a gear-type pump that mixes air with liquid soap to create foamed pump. The dispenser can also include two pumps, one pump to feed liquid pump to...http://www.google.fr/patents/US20110114669?utm_source=gb-gplus-shareBrevet US20110114669 - SOAP DISPENSER
