Opening means for packaging containers
Patent 4312450 Issued on January 26, 1982. Estimated Expiration Date: 
January 26, 1999. 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.
January 26, 1999. 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 References 2731188 3127082 3580478 3883034 Cover strip for the pouring opening in a packing container Patent #: 3977591 InventorAssigneeApplicationNo. 05/877675 filed on 02/14/1978US Classes:229/123.1, Nonunitary, peelable closure or securing element (i.e., not of one-piece construction with the box)229/123.2, Including tearing or breaking means for opening a nonunitary closure or releasing a nonunitary securing element (i.e., the closure or securing element is not of one-piece construction with the box)229/125.15For an access opening formed by a cut-out in a box wallExaminersPrimary: Garbe, Stephen P.Attorney, Agent or FirmInternational ClassB65D 5/70 (20060101)AbstractA dispensing container includes a pouring aperture in its upper wall near a fold line which lies between it and the adjacent side wall. The side wall includes a cut line which forms a flap hinged along the above-mentioned fold line. A layer of plastic material extends across the pouring opening and hinged flap for sealing the container until the contents are to be used. When the plastic material is removed, the pouring aperture is opened and the hinged flap folds out of the plane of the side wall to form a pouring lip which directs the flow of contents away from the side wall. | |
