A container closure assembly that includes a base that is adapted to be connected to a container, a spout extending upwardly from the base, and a cap removably secured on the spout. The spout defines an interior and includes a nozzle, the interior of which is spanned by a membrane that includes at least...http://www.google.com.au/patents/US7591398?utm_source=gb-gplus-sharePatent US7591398 - Container closure assembly
