Packing containers with pouring spout
Patent 4301927 Issued on November 24, 1981. Estimated Expiration Date: 
April 29, 2000. 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.
April 29, 2000. 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 2156366 2554050 3318505 3412918 3791570 3795359 InventorsAssigneeApplicationNo. 06/144861 filed on 04/29/1980US Classes:229/216, Pour spout formed by tearing a sealing fin229/140One extension extends along an adjacent box wallExaminersPrimary: Ross, Herbert F.Attorney, Agent or FirmInternational ClassesB65D 5/06 (20060101)B65D 5/02 (20060101) Foreign Application Priority Data1979-05-08 SEAbstractPacking containers of the non-returnable type for the packaging of milk, etc, frequently have a fold-out pouring spout which is intended to facilitate the pouring out of the milk in a concentrated jet.However, the air which must enter the package via the pouring spout at the same time as the pouring out takes place causes the flow to stop periodically so that the pouring out occurs jerkily.This disadvantage is overcome in accordance with the invention in that the spout is designed to have an emptying duct as well as an air duct. The air duct extends into the packing container over such a length that air can pass unhindered into the packing container without disturbing the flow of the contents through the pouring spout. | |
