Dispenser and reservoir
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United States of America Patent
Stats
-
Nov 13, 2012
Grant Date -
Oct 11, 2007
app pub date -
Nov 19, 2004
filing date -
Nov 21, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A dispenser (1) has a source (2) of medicament with a transparent reservoir (3) of glass sheathed in a transparent plastics material shrink wrapping (4), which provides an enclosure against explosion of the glass in the event of accidental breakage of the glass. The reservoir contains not only a liquid medicament (5), but also a gaseous propellant liable to cause the glass to explode if broken. A valve (6) of the source is within a body (7) of the dispenser. The valve is attached to the reservoir by a crimped on aluminum sleeve (8). With the dispenser inverted the level (14) of the medicament (5) is within the tapered tip when the medicament is close to being used up. As use of the dispenser continues, the level falls progressively faster, giving the user an indication that a fresh dispenser will soon be required.
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