| 摘要 |
A cover for a filling or dispenser spout (5) for a storage holder such as a liquid container, which cover consists of a circular body (1) having arranged along the periphery thereof a flange member (2) provided with fastening means (3) such as a screw-thread, co-operating with the spout (5) and a sealing ring (7) fitted inside the flange member, wherein the circular part of the cover located inside the sealing ring is provided with a discharge opening (8) which can be closed off from the container content by a pressure sensitive closing means (9) arranged inside the cover, said closing means being a dome-like structure (13) co-operating with a diaphragm (10) with a passage opening (12), such that the content of a storage holder can be vented without the content thereof, for instance an aggressive liquid, being able to escape to the outside. |
