Dispensing assembly due to control air uptake in contact with fluid product
US5492252A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Oct 20, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0032
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Assembly for dispensing a liquid to pasty product, includes a container holding the product, and a dispensing head having a dispensing channel. The material of the container has a rigidity such that the dispensing of the product requires air-uptake by the container. A pumping member having an inlet valve and a dispensing valve is provided for dispensing the product. The pumping member is of the type having no air-uptake. The assembly includes elements for selectively establishing or preventing air-uptake by the container. The dispensing head possesses a bearing surface having a flexible diaphragm defining a springy leaf applied against the end of the bearing surface into which the dispensing channel emerges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.