Dispensing head and a dispenser including the same
US6145707A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D47/2018
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispensing head for a container is disclosed. The dispensing head includes a portion defining at least one opening on the dispensing head for permitting dispensing of a product via the opening. A valve is configured to limit direct flow of air into the container via the opening and to permit dispensing of the product via the opening. The dispensing head further includes porous material impervious to the product and capable of allowing passage of air into the container via the porous material. The porous material is at least partially exposed on an exterior surface of the dispensing head. In addition, part of the valve is formed of the porous material and the porous material at least partially defines the opening on the dispensing head. Also disclosed is a dispenser including the dispensing head and a container containing the product. The dispensing head is provided on the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.