DELIVERY DEVICES
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United States of America Patent
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-
N/A
Issued Date -
N/A
app pub date -
May 2, 2011
filing date -
Jul 9, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A delivery device for and method of delivering substance, the delivery device comprising: a delivery outlet from which substance is in use delivered; a gas chamber containing a gas and being of reducible volume, wherein a reduction in the volume of the gas chamber to a predeterminable volume acts to pressurize the contained gas to a predeterminable pressure; a seal element disposed between the gas chamber and the delivery outlet; and an opening mechanism configured, on reduction of the volume of the gas chamber to a predeterminable volume, to open the seal element, whereupon a gas flow from the gas chamber acts to deliver substance from the delivery outlet.
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