An improved container and closure combination is described. The container has a variety of protrusions from its neck. The closure consists of a cap cover, a tear strip, a double-hinge, and an anchor band. The improvements of the closure include providing for a flexible valve seal, an easier removal apparatus...http://www.google.fr/patents/US4919286?utm_source=gb-gplus-shareBrevet US4919286 - Hinged closure and container
