Filter unit for the filtration of gaseous fluids, in particular air filter in internal combustion engines
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United States of America Patent
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May 7, 2013
Grant Date -
Jan 13, 2011
app pub date -
Dec 4, 2008
filing date -
Dec 7, 2007
priority date (Note) -
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Abstract
A filter unit (1) for the filtration of gaseous fluids has a filter web (13), which is wound in a spiral about a support core (18), and which is provided with parallel flow channels (16a, 16b) for the fluid. Flow channels (16a, 16b) which are directly adjacent to the support core, are covered by a cover element (4), which is connected to a component of the filter unit (1).
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