Patent ID: 8640746
Filing Date: 2014-02-04
Classification: B65B,C12H

Abstract:
1. A stopper to seal an opening of a container and to allow the removal of air from the container with a vacuum source, said stopper comprising: a bottom portion sized to fit within the opening of the container, wherein the bottom portion has at least one frustoconical portion to engage an inner surface of the container; a top portion, said top portion comprising a vacuum source interface and a radial flange; wherein the top portion is slidably engaged to the bottom portion such that the radial flange engages the bottom portion in a first position when little or no vacuum is present in the container and wherein the radial flange translates away from the bottom portion to a second position when a desired vacuum level is present in the container; a valve engaged to the top portion; an inscription about an outer circumference surface of the stopper; and an indicator to selectably identify a portion of said inscription.