A metallic diaphragm is provided within a pump chamber. This diaphragm is oscillated by a stem to Feed liquid medicine. The stem is provided with a plate and a movement of this plate, i.e., a stroke of the stem is limited by a pair of stoppers. Relative position of the paired stoppers at which they limit...http://www.google.es/patents/US5429484?utm_source=gb-gplus-sharePatente US5429484 - Liquid feed pump particularly used for liquid medicine and liquid feed apparatus for filling of liquid medicine
Liquid feed pump particularly used for liquid medicine and liquid feed ...
