US Patent No: 6,413,289

Number of patents in Portfolio can not be more than 2000

Reverse flow air filter arrangement

ALSO PUBLISHED AS: 20020014058

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A reverse flow air filter arrangement is provided. The arrangement includes a filter element having first and second end caps, the second end cap having a central drainage aperture. A funnel shape on an interior surface of second end cap is used to direct moisture flow to the drainage aperture. The arrangement includes a housing in which the filter element is positioned, operatively, during use. Certain features in the housing facilitate moisture withdrawal from the filter element while also inhibiting interference with sealing between the a filter element and the housing.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DONALDSON COMPANY, INC.MINNEAPOLIS, MN791

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bartels, Dolan Cresco, IA 19 371
Crenshaw, Bruce Indianapolis, IN 19 363
Engel, Donald Francis Prior Lake, MN 17 445
Hacker, John Bloomington, MN 17 362
Harold, Don Prior Lake, MN 10 139

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Donaldson Company, Inc. (10)
4,720,292 Cylindrical air filter with lightweight housing and radially directed seal 176 1986
5,238,474 Filtration arrangement 126 1992
5,547,480 Cylindrical air filter with radially directed seal 178 1994
5,613,992 Reverse flow air filter arrangement and method 133 1994
5,690,712 Reverse flow air filter arrangement and method 59 1996
5,938,804 Reverse flow air filter arrangement and method 51 1997
5,897,676 Reverse flow air filter arrangement and method 137 1998
6,004,366 Reverse flow air filter arrangement and method 38 1998
6,258,145 Reverse flow air filter arrangement 28 1999
6,322,602 Reverse flow air filter arrangement 52 2001
 
FILTERWERK MANN & HUMMEL GMBH (3)
4,203,739 Separator device for removing oil from an air stream 31 1978
4,632,682 Cartridge-type oil separator air filter 63 1986
5,167,683 Intake air filter for the internal combustion engine of a motor vehicle 79 1991
 
ONC SOLUTIONS, INC. (2)
8,320,995 Fiducial marker with rings 2007
8,320,995 Fiducial marker with rings 2007
 
PALL CORPORATION (2)
5,006,235 Barrier flange filter assembly including cover 23 1986
5,779,903 Filter assemblies and end caps for filter assemblies 50 1996
 
WIX FILTRATION CORP. (2)
5,415,677 Air filters including filters configured for both radial and axial sealing 103 1993
5,487,767 Radially sealed air filters 116 1995
 
Allied Signal (1)
4,759,783 Sealing arrangement for inlet air filter 68 1987
 
BALDWIN FILTERS, INC. (1)
5,484,466 Air filter element with radial seal sealing gasket 153 1994
 
GENERAL MOTORS CORPORATION (1)
4,735,640 Air cleaner liquid drain and filter assembly 17 1987
 
MAEDA LIMITED (1)
4,848,989 In-line filter assembly for compressed air 37 1987
 
VILTER MANUFACTURING CORPORATION (1)
4,516,994 Apparatus for separating liquid droplets from gas 57 1984
 
Other [Check patent profile for assignment information] (1)
4,764,191 Air filter 39 1987

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Donaldson Company, Inc. (20)
7,455,707 Reverse flow air filter arrangement and method 3 2003
7,070,642 Air cleaner; replaceable filter cartridges; and, methods 39 2003
8,216,335 Air cleaner; replaceable filter cartridges; and methods 6 2005
7,537,631 Filter cartridges; air cleaners; and methods 29 2005
7,524,349 Air cleaner; air filter cartridge and method of manufacturing 28 2006
7,662,203 Air cleaner; replaceable filter cartridges; and, methods 32 2006
8,273,143 Air cleaner, replaceable filter cartridges, and methods 1 2007
8,414,675 Air cleaner; air filter cartridge and method of manufacturing 5 2008
8,292,984 Air cleaner arrangments with end support for cartridge; components; and, methods 7 2008
8,066,791 Air cleaner arrangements with internal and external support for cartridge; components; and, methods 10 2008
8,038,756 Air cleaner arrangements; components; and, methods 7 2008
7,981,186 Air cleaner; air filter cartridge and method of manufacturing 10 2009
8,361,181 Air cleaner assemblies; filter cartridges therefor; features; and, methods 1 2009
7,988,757 Air cleaner; replaceable filter cartridges; and, methods 10 2010
8,545,588 Air cleaner arrangements; components; and, methods 3 2011
8,480,778 Air cleaner arrangements; components; and, methods 1 2011
8,394,166 Air cleaner; replaceable filter cartridges; and, methods 6 2012
8,784,523 Air cleaner replaceable filter cartridges; and, methods 0 2012
8,814,973 Air cleaner arrangements with end support for cartridge; components; and, methods 0 2012
8,702,831 Air cleaner; replaceable filter cartridges; and, methods 0 2013
 
Kohler Co. (6)
8,052,780 Air cleaner assembly 5 2006
D632770 Cyclonic air cleaner housing 4 2008
8,808,432 Cyclonic air cleaner 0 2009
8,585,805 Cyclonic air cleaner 0 2009
8,419,834 Air cleaner assembly 1 2010
8,801,819 Air cleaner assembly 0 2013
 
BALDWIN FILTERS, INC. (3)
7,815,705 Air filter with composite end cap 0 2005
7,628,837 Air filter with composite end cap 1 2005
8,016,922 Air filter with composite end cap 0 2010
 
Donaldson Company, Pnc. (1)
8,460,425 Air cleaner; replaceable filter cartridges; and, methods 1 2011