Packaging container with a pouring spout
Patent 4248351 Issued on February 3, 1981. Estimated Expiration Date: 
June 20, 1998. 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.
June 20, 1998. 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 3083876 3178090 3232514 3347444 3892347 3924796 Packing container Patent #: 4078715 InventorAssigneeApplicationNo. 05/917201 filed on 06/20/1978US Classes:229/216, Pour spout formed by tearing a sealing fin229/125With means for securing closure element in an open configurationExaminersPrimary: Garbe, Stephen P.Attorney, Agent or FirmInternational ClassesB65D 5/06 (20060101)B65D 5/02 (20060101) Foreign Application Priority Data1977-06-20 SEAbstractA packing container with an unfoldable pouring spout which has an inherent tendency to assume an unfolded position when the container has been opened is disclosed. The ability of the pouring spout to tend to assume the unfolded position is achieved by having certain folding lines of the container weaken the material of the container to an appreciably greater extend than certain other folding lines of the container. The relative difference in weakening of the material caused by the folding lines utilizes the elasticity of the packing material to urge the pouring spout to unfold. | |
