Filter assembly, and pre-filter device and pre-filter mounting plate therefor
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United States of America Patent
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Jun 23, 2015
Grant Date -
May 15, 2014
app pub date -
Sep 15, 2011
filing date -
Sep 24, 2010
priority date (Note) -
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Abstract
A filter assembly (6) comprises a mounting support (11) defining a fluid outlet opening in the support, a filter device (9) extending across the opening, a fastening arrangement (12) operative to locate the filter device against a seat (11a) of the mounting support (11) so that the filter device (9) extends across the opening for filtering a fluid medium flowing through the outlet opening and the filter device (9), and a pre-filter device (8) secured, between the fastening arrangement (12) and the filter device (9), for pre-filtering fluid medium flowing successively through the upstream pre-filter (8) and downstream filter device (9). The pre-filter device (8) comprises a filter mounting plate (15) located upstream of the filter device (9) and held there by the fastening arrangement (12), relative to the fluid flow direction, and at least one filter element (16) removably mounted on the mounting plate (15).
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