US Patent 11628984 Pierceable closure valve assembly

The present application relates to a closure assembly for connection to a spout in fluid communication with a container. The closure assembly includes a housing configured to be secured to the spout and including a fluid passageway and a piercable membrane in the fluid passageway. The closure assembly includes a retention member configured to be secured to the housing and a flexible valve that is positioned in the fluid passageway of the housing and that is secured to the housing by the retention member. The closure assembly is configured to receive a piercing element that extends into the housing such that the piercing member can pierce the valve and the membrane, and the retention member has locking elements that engage the piercing element to lock the piercing element in place with respect to the assembly.