A battery operated, hand-held fluid dispenser comprises a supply container having a body portion and a narrow neck extending upwardly therefrom. A pump and discharge unit is mounted on the upper end of the neck and comprises a pump diaphragm and pump chamber for pumping liquid from the container...http://www.google.de/patents/US5716007?utm_source=gb-gplus-sharePatent US5716007 - Battery operated fluid dispenser
