Diesel exhaust filtering apparatus
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United States of America Patent
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Apr 22, 2014
Grant Date -
May 17, 2007
app pub date -
Nov 14, 2005
filing date -
Nov 14, 2005
priority date (Note) -
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Abstract
A filtering apparatus having a plurality of passages made up of juxtaposed longitudinally extending channels. The passages are axially divided by a porous filtering media extending across the channels whereby the channels fluidly communicate through the porous filtering media. A pressure differential is created across the filtering media by restricting flow through an end of each channel, with each restriction being at an opposite end from that of the other channel. As flow restriction rather than outright blocking is used, some flow is possible along each passage directly along the channels even if the channels lose the ability to fluidly communicate through clogging of the filtering media.
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