.~ Valved, self-closing, or apparatus contained bag closing means
DEFINITION
Classification: 55/367
(under subclass 361) Apparatus in which the separating member or apparatus has means which act to shut or seal the gas inlet opening of said member, whereby the member may be removed from the apparatus with the inlet opening in shut or sealed condition.
(1) Note. The means may be an inherent biasing of the sealing means to closed position resulting from a characteristic or property of the material or of its relation to other parts of the structure.
