Liquid droplet spray device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 19, 2004
Grant Date -
Apr 10, 2003
app pub date -
Sep 3, 2002
filing date -
Sep 3, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns a liquid droplet spray device for atomising a liquid substance, comprising a housing comprising a first substrate, a second substrate superposed on the first substrate and a space enclosed by said first and second substrates for containing the liquid substance. An outlet means is arranged in at least one of said first or second substrates and comprises at least one outlet nozzle (19) and at least one output channel (20) connecting the space (12) to each outlet nozzle (19). A vibrating element (18) is disposed to vibrate liquid in said space (12) so as to eject said liquid substance as a spray through said outlet nozzles (19). According to the present invention, each output channel (20) has a first portion (20a), a second portion (20b) and a third portion, said first portion being arranged adjacent said space (12) and having straight sidewalls, said third portion also having straight sidewalls, the width of said first portion being larger than the width of said third portion, said second portion connecting said first portion to said third portion such that the width of the output channel changes progressively from the width of said first portion to the width of said third portion.
First Claim
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Cited Art Landscape
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