Metering valve for aerosol container
US6978916B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2003 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Jul 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A metering valve assembly comprising a ferrule and a valve housing defining an internal cavity. The valve housing accommodates an annular flange and a compression spring therein with a valve gasket closing the internal cavity. The valve housing is attached to the ferrule such that a stem portion of the valve stem protrudes through apertures provided in both the valve gasket and the ferrule. A stem portion has a discharge passageway which is normally closed by the valve gasket. Either an undersurface of the annular flange or a mating surface of the valve housing is provided with a compressible sealing member while the other is provided with an annular edge. The compressible sealing member and the annular edge form a seal therebetween, when the valve stem is sufficiently depressed, to partition the interior cavity into a metering chamber and a separate filling chamber whereby product may only be dispensed solely from the metering chamber when a product flow path is established.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.