A device for connecting between a recipient and a container, including a base, mounted on the recipient and a bush forming an inner bore, and a plunger adapted to slide in this bore, between a first position disengaged with respect to the stopper of the recipient and a second, so-called transfer position,...http://www.google.com.hk/patents/US6478788?utm_source=gb-gplus-share專利 US6478788 - Device for connection between a recipient and a container and ready-to-use assembly comprising such a device
