The invention relates to a portable, handheld eyewash dispenser for discharging an eyewash liquid. The eyewash dispenser includes a housing and an expandable rubber bladder mounted in the housing. The housing and the rubber bladder conjointly define a chamber for accommodating the eyewash liquid therein....http://www.google.es/patents/US4784652?utm_source=gb-gplus-sharePatente US4784652 - Eyewash dispenser
