Filter apparatus for filtering the air for an internal...

Details Filter apparatus for filtering the air for an internal... Filter apparatus for filtering the air for an internal...

2006-12-14

2009-12-15

Lawrence, Frank M (Department: 1797)

Gas separation

Two or more separators

Plies or layers of different characteristics or orientation

C055S385300, C055S487000, C055S488000, C055S498000, C055S502000, C055S521000, C055S524000, C055S528000

Reexamination Certificate

active

07632328

ABSTRACT:
A filter device for filtering air in internal combustion engines equipped with a filter that can be inserted into a filter housing and has a flame-retardant effect. The filter comprises a main filter element and an upstream filter fleece whereby the flame-retardant effect is achieved by the fleece prefilter.

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European Search Report dated Apr. 18, 2007 with English translation of relevant portion (Seven (7) pages).

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