Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Reexamination Certificate
2008-04-29
2008-04-29
Smith, Duane (Department: 1797)
Gas separation
Plural serial basically diverse separating media
Plural stages in unitary casing
C055S332000, C055S337000, C055S456000, C055S457000
Reexamination Certificate
active
11796792
ABSTRACT:
A precleaner arrangement for use in separating a portion of entrained material in air from air entering an air cleaner, is provided. The precleaner arrangement includes a vane structure positioned to direct air into a circular or cyclonic pattern, to facilitate material separation. The vane structure includes one or more adjustable air deflection vanes. Each adjustable air deflection vane is constructed: to have a first position under no air flow or low air flow rate conditions; and, to deflect to import a more open, lower restriction, orientation under increased air flow rates. Preferred precleaner arrangement constructions, assemblies utilizing in the precleaner arrangement and methods are described.
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Barris Marty A.
Gieseke Steven Scott
Xu Ji-an
Donaldson & Company, Inc.
Merchant & Gould P.C.
Smith Duane
Turner Sonji
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