Gas separation: processes – Filtering
Reexamination Certificate
2007-09-04
2007-09-04
Greene, Jason M. (Department: 1724)
Gas separation: processes
Filtering
C055S484000, C055S498000, C055S502000, C055S529000, C055S521000, C055S510000
Reexamination Certificate
active
10953139
ABSTRACT:
An air filter assembly for removing particulate matter from an incoming dirty air stream. The assembly includes a housing having an inlet, an outlet, a dirty air chamber and a clean air chamber and a non-cylindrical shaped elongated filter element arranged within the dirty air chamber constructed to remove particulate matter from an incoming air stream. A plurality of non-cylindrical filter elements are preferred. The non-cylindrical filter elements provide a decreased incoming air stream velocity when compared to conventional cylindrical filter elements having the same surface area. Alternately, the non-cylindrical filter elements allow an increase in the volume of incoming air when compared to conventional cylindrical filter elements having the same surface area.
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Arguments made by Opponent ECS Australasia Pacific Pty Ltd. in an opposition filed on Feb. 17, 2006 in Donaldson Company's Australian Patent Application No. 2001271698.
Johnson Steven A.
Kosmider Kristofer G.
Raether Thomas D.
Donaldson & Company, Inc.
Greene Jason M.
Merchant & Gould P.C.
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