Container
US6523724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2000 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Dec 28, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D51/1616
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present inventors have discovered a new vent which can be used in a venting closure and particularly in venting closures for large heavy duty liquid detergent and other liquid laundry product containers. In one embodiment, the vent comprises a wall, a vent opening in the wall, and one or more spacers on the surface of a face of the wall. Most especially the spacers are protuberances, especially rounded protuberances. A liner is adhered to a portion of the surface of the face and spaced from the vent opening by the spacers. The liner is made of a material which permits air to pass through the vent hole, but preferably, the liner material does not permit liquids to pass through the vent hole. In an especially preferred embodiment, the liner is comprised of a tetrafluoroethylene polymer. In a most preferred embodiment the application is also directed to a venting closure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.