Collapsable tube
Patent 3936334 Issued on February 3, 1976. Estimated Expiration Date: 
February 3, 1993. 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.
February 3, 1993. 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 2252854 2682974 2743038 2777612 2889078 2965964 3223289 3347419 3381818 3740306 InventorsAssigneeApplicationNo. 482370 filed on 06/24/1974US Classes:156/69, Application of end closures to containers156/203, And edge-joining of one piece blank to form tube156/309.9, With heating of lamina prior to assembly156/322, Heating lamina prior to assembly or adhesive applying156/334, Hydrocarbon resin222/107, Nonmetallic222/94, Plural container and/or compartment222/95With wall-collapsing meansExaminersPrimary: Whitby, Edward G.Foreign Application Priority Data1971-12-25 JAAbstractA process for forming a collapsable tube having a flexible inner tube and a resilient outer tube. A shoulder member is formed having connecting surfaces. A flexible inner tube is joined to the shoulder member at a connecting surface. An outer tube encompassing the inner tube is joined to the shoulder member at a separate connecting surface so that the outer tube overlaps the joint between the inner tube and shoulder member. To resist permeation, the inner tube is formed by lap welding a laminated sheet of different natured materials and depositing a molten material along an edge of the sheet to seal it.Field of SearchApplication of end closures to containers | |
