Combined filter device for filtering out particles and gases
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United States of America Patent
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-
Mar 13, 2001
Grant Date -
N/A
app pub date -
Jun 10, 1999
filing date -
Jun 10, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A combined filter, for removing solid particles and noxious gases from air to be delivered into the cabin of a vehicle, as part of a ventilating, heating and/or air conditioning system, comprises two layers of a non-woven tissue such as polypropylene, between which are deposited activated carbon granules. The two layers of non-woven tissue are interleaved at least partially, so as to trap the granules between them.
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