Aerosol inhalation device
US5385140A · kind A · utility
137Cited by
13References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1993 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Oct 6, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7843
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A diaphragm valve mechanism comprises a diaphragm valve support structure having passages extending therethrough. Projecting normal to a grid are a number of locating pins which are adapted to extend through holes in the diaphragm valve. The diaphragm valve is formed of flexible material and is provided with a pair of cross slits, each corresponding with the grid bridge element. The central portion of the diaphragm valve is located within a major flow passage whereas the outer peripheral edge portion of the diaphragm valve is located within an exit passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.