Various embodiments of the present invention are directed to equalizing pressure in a reservoir containing fluidic media, possibly due to imperfect installation of the reservoir or an external influence such as an altitude or a temperature change. In various embodiments, fluidic media may be expelled...http://www.google.es/patents/US20090171324?utm_source=gb-gplus-sharePatente US20090171324 - Reservoir Pressure Equalization Systems and Methods
Reservoir Pressure Equalization Systems and Methods