System for regulating evaporation intensity in insecticidal freshener devices and the like
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United States of America Patent
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Dec 25, 2007
Grant Date -
Apr 8, 2004
app pub date -
Jan 29, 2001
filing date -
Jan 29, 2001
priority date (Note) -
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Abstract
The system is based on a change in the intensity of evaporation caused by a chimney effect, modifying the flow of air that circulates through the environment apparatus in the surrounding area of the wick. It consists of using a casing (1) with slots (6) for the passage of air in its upper part. This is done in such a manner that said casing (1) can be used in isolation, thus attaining an apparatus that does not regulate the evaporation intensity, but that has a complementary part (7) joined to the upper part of said casing (1). This assembly, enabling free turning, has complementary slots (9), that determine a greater or lesser flow of air and the consequent regulation of the intensity of the evaporation, depending on the greater or lesser degree of opposition they have to the slots (6).
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