Venting cover
Patent 4828129 Issued on May 9, 1989. Estimated Expiration Date: 
March 3, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 3, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 07/163713 filed on 03/03/1988US Classes:215/260With pressure-responsive valveExaminersPrimary: Norton, Donald F.Attorney, Agent or FirmInternational ClassB65D 51/16 (20060101)Foreign Application Priority Data1987-03-06 NLAbstractA 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. | |
