Patent ID: 6024234
Filing Date: 2000-02-15
Classification: B65D

Abstract:
A closure device for a membrane sealed container, said closure device comprising:an annular wall;a top wall disposed within and connected to said annular wall, said top wall having an upper surface; anda pierce-plow member disposed on said upper surface of said top wall at a position spaced from said annular wall, said pierce-plow member being arcuate, said pierce-plow member comprising:a first plow base member having a ramp portion and a substantially flat portion; anda piercing member disposed adjacent to said substantially flat portion of said plow base member, said piercing member having a first portion disposed adjacent to said first plow base member and a second portion disposed at a position spaced from said first plow base member, a thickness of said second portion of said piercing member being greater than a thickness of said first portion of said piercing member.