Patent ID: 6557462
Filing Date: 2003-05-06
Classification: A45C,A47J,B65D,Y10S

Abstract:
A vacuum valve including a lid for closing a container body which is opened at an upper end thereof to receive a food item, a depression defined on the lid, a boss formed on the lid at a bottom of the depression and defined with an air hole for communicating the outside and the inside of the container body, a rotary cover rotatably arranged in the depression and having an accommodating space, and a closure member detachably coupled to the rotary cover in such a way as to close the accommodating space, the vacuum valve comprising:a through-hole defined at a center portion of the closure member; a vacuum maintaining member accommodated in the accommodating space and having an airtightening flange part and a semi-spherical head part, the airtightening flange part being brought into close contact with a portion of the rotary cover which defines the bottom of the accommodating space, and the semi-spherical head part projecting upward from the airtightening flange part in a rounded manner such that, as the lid of the vacuum container is repeatedly pressed and released, air existing in the container body is discharged to the outside and vacuumization is effected in the vacuum container; and an exposure bar extending upward from the semi-spherical head part by a predetermined length such that the exposure bar can be moved upward and downward through the through-hole of the closure member depending upon a vacuumization degree to allow a user to confirm a vacuumized state of the vacuum container with the naked eye.