Filter for an inflator
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United States of America Patent
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Dec 15, 1998
Grant Date -
N/A
app pub date -
Oct 31, 1995
filing date -
Oct 31, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The filter for an inflator of the present invention includes a cylindrical compressed mesh unit, which is multi-folded in its substantially entire length, and the multi-folded mesh unit is provided by folding a cylindrical wire mesh knitted from a single metal wire by a predetermined length from its one or both end portions in the longitudinal direction, so as to be overlaid on the outer peripheral surface of the cylindrical wire mesh, and such a folded overlaying is repeated a plurality of times. Then, the cylindrical mesh unit thus constituted is compressed in its longitudinal direction. The above-mentioned compressed cylindrical mesh unit should have a cavity ratio of 70 to 80% in terms of cavity ratio C defined by the equation indicated below: C=(.rho.o-.rho.)/.rho.o.times.100(%). The inflator filter of the present invention may be the cylindrical compressed mesh unit solely or may be equipped with an outer protection cylinder on the outer periphery thereof, or may be further equipped with an inner protection cylinder on the inner periphery thereof.
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