Pressure-responsive device and associated method of manufacture
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United States of America Patent
Stats
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Mar 1, 2011
Grant Date -
Jun 10, 2004
app pub date -
Sep 24, 2001
filing date -
Sep 29, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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International Classification(s)
- F16K:VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR....
- A23P:SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERE....
- B28B:SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG O....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29B:PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE ....
- B27N:MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR ....
- F16F:SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRAT....
- H01H:ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PR....
- A61M:DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE B....
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