Tube end closure
US12404082B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2020 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Sep 16, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D59/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
According to one aspect, a non-roll end sleeve is configured to be disposed on a seamless cylindrical paper tube, said non-roll sleeve having a rectangular cross-section perpendicular to a central axis of the cylindrical paper tube when disposed on the cylindrical paper tube. According to another aspect, a container includes a seamless paper tube having at least one end provided with a shape in cross-section generally having N sides, where N is an integer selected from 3 to 8, which at least one end is closed by flaps of material between openings cut into the at least one end that have been folded inwardly and secured in place to form an end closure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.