Locking system for holding open a plastic film bag
US5478152A · kind A · utility
Inventor
Key dates
| Filing date | May 20, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | May 20, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B67/1222
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A locking system for releasably holding open the opening of a plastic film bag, composed generally of a first locking element extending from the external surface of the plastic film bag adjacent the opening thereof and a second locking element extending from a shape defining structure. The first locking element lockably mates with the second locking element in a male-female fashion either by pressing them mutually together or by sliding one into the other. The shape defining structure may be a ring member of a sidewall of a trash receptacle or of a removable lid therefor, or some other structure, such as a free standing ring member which may or may not be of circular shape. The first and second locking elements may be configured in a number of different forms in order to accomplish the aforesaid mutual interlocking function. For example, a T-shaped tongue element extending from the exterior sidewall of the plastic film bag and a female groove having opposing bosses separated by a slot provided on the shape defining structure, wherein the T-shaped tongue element is slid into or out of the female groove in order to selectively hold open the plastic film bag. As another example, the f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.