Self closing bag
US6793392B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2001 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Feb 26, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D33/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A bag comprising an envelope closed at one end by an end wall and delimiting a mouth at the other end, containing a charge capable of passing, for example under gravity, through said mouth, when said bag is in the inverted position, said envelope being shaped on itself at said mouth in order to close said bag.At the opposite end to the end wall, the envelope is shaped on itself, in particular folded, to determine, without discontinuity:an outer sleeve which is above the mouth when the bag is in the inverted position;at least one inner closure fold;a neck inside which the inner closure fold is located;and at least one outer closure fold closing said neck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.