Air freshener unit
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United States of America Patent
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Apr 5, 1988
Issued Date -
N/A
app pub date -
Jul 6, 1987
filing date -
Sep 29, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
New dynamic air freshener unit comprises a porous synthetic polymer support impregnated with a fragrance. The synthetic polymer support is one produced by: (a) bonding together small particles of solid polymer; (b) coagulating polymer solutions in a non-solvent for the polymer; or (c) expanding a thermoplastic or thermosetting plastic by means of a blowing agent; to form a porous body. The unit is especially useful in vacuum cleaners.
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