Pressure-responsive device and associated method of manufacture
US7896001B2 · kind B2 · utility
3Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Sep 24, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/755
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
There is provided a pressure-responsive device (40) suitable for use in an inhaler, the pressure-responsive device (40) comprising a closed frame (42) over which is fixed a membrane (44), a tongue (46) being supported on the membrane (44). Two upstanding wings (50) are integrally moulded with the tongue (46) and incorporate square apertures (52). A method of manufacturing the pressure-responsive device (40) is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.