Patent ID: 6609630
Filing Date: 2003-08-26
Classification: B65D

Abstract:
A valved closure for use in dispensing a liquid from a container, said closure comprising:a) a cover adapted to close off the open end of said container, said cover comprising an outlet passage, an inner wall, a circumferential seal member, and a flow opening; b) a membrane defining a central portion and a peripheral portion, said peripheral portion adapted to be attached to said inner wall of said outlet passage, said central portion seated against said circumferential seal member to deny access to said flow opening when said central portion is unstressed and said central portion is unseated from said circumferential seal member to allow direct communication between the interior of said container and the exterior of said cover through said flow opening when said central portion is stressed, said central portion is substantially impervious to liquid flow radially inward of said circumferential seal member when said central portion is engaged with said circumferential seal member.