Patent ID: 7909192

Claim:
A venting system for use with a container comprising: a cap seal that allows air flow in when a vacuum is formed inside the container, the cap seal defining an orifice therethrough; at least one membrane means disposed between the orifice of the cap seal and a vented closure, the membrane being semipermeable for prohibiting passage of at least one atmospheric component through the cap seal while allowing the passage of air into the container and for prohibiting passage of a product out of the container; a scavenger means comprising a sorbent material selected from the group consisting of silica gel, activated carbon, a molecular sieve, and mixtures thereof, for prohibiting passage of materials in ambient air into the container and for prohibiting passage of the product out of the container; wherein said vented closure does not allow an air flow into the container when the pressure is equalized within the container such that the cap seal, the membrane means, the scavenger means, and the vented closure function as a vacuum relief valve without moving parts.