Patent ID: 6626311
Filing Date: 2003-09-30
Classification: B65D

Abstract:
A vented closure for preventing deformation of a container containing a gas evolving liquid, comprising:a first closure member for sealing the container that contains a gas evolving liquid from the outside atmosphere, the first closure member defining a gas port having a gas inlet defined by an aperture of a top surface of the first closure member; a gas-permeable, liquid-impermeable membrane that covers the gas inlet; a second closure member having a top panel and an inner surface, being moveably fitted on the first closure member and encasing the first closure member with a clearance fit that allows gas passage, and including a protuberance coupled to the inner surface of the second closure member, and being aligned with the gas port of the first member; and wherein upon application of a predetermined load to the top panel of the second closure member the container is sealed preventing gas passage, and wherein upon removal of the predetermined load from the top panel of the second closure member the second closure member shifts to an elevated position allowing gas passage.