Stem configuration to reduce seal abrasion in metered dose aerosol valves
US6644517B2 · kind B2 · utility
28Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Oct 15, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/009
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A valve stem for use in an aerosol valve such as a metered dose medicinal aerosol valve is described. The valve stem includes a flattened area around the side hole. The flattened area helps reduce damage to the diaphragm aperture upon repeated actuation of the metered dose inhaler. Also described is a metered dose valve and a metered dose inhaler, each including the flattened valve stem of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.