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US 2009/0152188 A1Published application
Liquid filter arrangements; components; and, methods
AssigneeDonaldson Company, Inc.
InventorJohn Hacker
Life of this patent
Estimating the term…
Abstract
Liquid filter assemblies and components therefor are described. A liquid filter is described which includes media extending between first and second end caps; the first and second end caps being configured for advantageous engagement with other components of the liquid filter assembly during use. A liquid filter arrangement, comprising a filter cartridge installed in the housing or bowl is described. Such an arrangement is appropriate for installation on a filter head, to obtain liquid filter operation.
Claims23
A liquid filter cartridge for removable installation in a liquid filter assembly, the filter cartridge comprising:
- (a) filter media surrounding an open filter interior;
- the media having first and second opposite ends;
- (b) first and second, opposite, open end caps;
- (i) the first end cap being positioned on the first end of the media and including a first seal support thereon;
- the first seal support projecting away from the media in a direction opposite the second end cap;
- and,
- (ii) the second end cap being positioned on the second end of the media and including a second seal support thereon;
- the second seal support projecting away from the media in a direction opposite the first end cap;
- (c) a first seal member mounted on and surrounding the first seal support and oriented to form an outwardly directed seal of a diameter DsA wherein:
- (i) DsA is less than an adjacent outer diameter of the media;
- and,
- (ii) DsA is greater than an adjacent inner diameter of the media;
- and,
- (d) a second seal member mounted on the second seal support and oriented to form an inwardly directed seal of a diameter DsB wherein:
- (i) DsB is less than an adjacent outer diameter of the media;
- and,
- (ii) DsB is greater than an adjacent inner diameter of the media.
14 more elements
A liquid filter arrangement comprising:
- (a) a bowl having an open end and a closed end;
- (i) the bowl including a filter support therein secured to the closed end of the bowl;
- (A) the filter support having a first end and a second end;
- (B) the filter support second end having a larger outer cross-sectional size than the first end;
- (b) a liquid filter cartridge removably installed in the bowl;
- the liquid filter cartridge comprising:
- (i) filter media surrounding an open filter interior and having first and second opposite ends;
- (A) the filter media being positioned with the first end of the filter support projecting into the open filter interior;
- and,
- (ii) first and second, opposite, open end caps;
- (A) the first end cap being positioned on the first end of the media and including a first seal support projecting away from the media in a direction opposite the second end cap;
- and.
- (B) the second end cap being positioned on the second end of the media pack and including a second seal support projecting away from the media pack in a direction opposite the first end cap;
- (iii) a first seal member mounted on the first seal support and oriented to form an outwardly directed seal;
- and,
- (iv) a second seal member mounted on the second seal support;
- the second seal member forming an internally directed seal with the second end of the seal support, the seal being at a diameter DsB wherein DsB is greater than an adjacent inner diameter of the media.
14 more elements
A liquid filter arrangement comprising:
- (a) a bowl having an open end and a closed end;
- (b) a filter support therein secured to the closed end of the bowl;
- (i) the filter support including:
- a perforate tubular extension;
- a radial transition shoulder;
- and, an end rim;
- (ii) the end rim having a larger outer cross-sectional size than the perforate tubular extension;
- and,
- (iii) the radial transition shoulder extending between the perforate tubular extension and the end rim;
- and,
- (c) a liquid filter cartridge:
- installed in, and selectively removable from, the bowl;
- and, separable form the filter support, the liquid filter cartridge comprising:
- (i) filter media surrounding an open filter interior and having first and second, opposite, ends;
- (ii) first and second opposite, end caps;
- each having a central aperture therethrough;
- (A) first end cap being positioned on the first end of the filter media and including a first seal arrangement thereon,
- (B) the second end cap being positioned on the second end of the media and including a second seal arrangement thereon;
- (iii) the liquid filter cartridge being positioned in the bowl with:
- (A) the second seal arrangement removably sealed to the end rim of the filter support;
- (B) the end rim of the filter support being in axial overlap with the second end of the media;
- (C) the perforate tubular extension projecting into the open filter interior;
- and,
- (D) the first end cap and the first seal arrangement surrounding and not sealed, to the filter support.
21 more elements
Dependencies are inferred from the claim text.