Metered-dose aerosol valves
US5477992A · kind A · utility
46Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Mar 23, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/52
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Metered dose dispensing valves providing good dosage reproducibility with formulations having a propensity to cream and with low concentration formulations. Valves having a tank retaining cup have a small inlet aperture of no more than 0.7 mm and preferably the tank retaining cup follows the configuration of the end of the valve stem. Valves having a bottle emptier attached to the valve stem have a filling channel in the valve stem which protrudes only slightly from the metering chamber when the valve is in its inoperative position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.