VENT DISC WITH CENTER KNOB

摘要

A member that positions a vent disc in an end of a container is provided. Th e member has at least one projection extending from the vent disc virtually solely for positioning the vent disc in its secured position in the end of a container. The at least one projection is located in the center portion of t he vent disc and can be one projection, which extends from the vent disc at the center point of the vent disc. The projection can be of a geometrical shape that facilitates gripping and handling of the vent disc, including rectangular, ellipsoidal or cylindrical shapes.