Substance source
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United States of America Patent
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Jul 18, 2017
Grant Date -
Jun 11, 2015
app pub date -
Feb 18, 2015
filing date -
Nov 19, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A source of gaseous, gas borne or droplet substance having: an inner pressurized container (1), a substance-release valve (2) device sealed across an end of the container (1), a spout (4) displaceable inwards of the container (1) against a spring of the valve (2) device for substance release; the source also includes: an outer enclosure enclosing the inner container along its length (12), at least partially its end (14) remote from the spout (4) and partially at its spout end (19), the outer enclosure and the inner container (1) being arranged to react force for displacement of the spout (4) on substance release; a counter (20) accommodated within the outer enclosure for counting substance release displacements of the spout (4); and a window (22) in the outer enclosure for viewing the count of the counter (20).
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