Respirator filter canister
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United States of America Patent
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Sep 11, 2012
Grant Date -
Jul 5, 2012
app pub date -
Nov 14, 2007
filing date -
Apr 25, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A gas mask filter canister of varying shapes is filled by orienting the a fill opening to face upwardly, introducing into the fill opening a particulate filter material, and vibrating the filter canister at a frequency and amplitude, and for a time until a predetermined packing density is reached. The invention can be used to fill elliptical or other odd shaped filter canisters having a concave profiles to conform closely to the curvature of the wearer's face.
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