Liquid filter assemblies; features; components; and, methods

Patent metadata

Field	Value
Publication number	US-9480940-B2
Application number	US-201013262071-A
Country	US
Kind code	B2
Filing date	Mar 30, 2010
Priority date	Mar 31, 2009
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

Liquid filter assemblies, features, components and methods are described. In general, a liquid filter cartridge is provided which includes features that help ensure that when the assembly is serviced, the cartridge positioned within the assembly is a proper one, in proper sealing orientation, for appropriate use. Features that can be used to provide for this include: a seal on the filter cartridge that defines a seal pattern non-orthogonal to a plane perpendicular to a central axis of the filter cartridge; and, a member of a projection/receiver arrangement on the filter cartridge which is orientated to engage a portion of a liquid filter assembly, for example a liquid flow collar, to allow sealing when the cartridge is a properly positioned cartridge and a properly configured cartridge. Assembly features are described. Also, a flexible radial projection arrangement providing snap-fit interaction between a cartridge and housing is provided. Methods of assembly and use as described.

First claim

What is claimed:

1. A liquid filter cartridge configured for use, in installation, in removable sealing engagement with a liquid flow collar of a liquid filter assembly; the liquid filter cartridge comprising:
(a) a filter media pack comprising filter media surrounding an open filter interior;
(i) the filter media having first and second, opposite, ends; and, defining a central axis;

(b) a first end construction positioned at the first end of the filter media; and,
(c) a second end construction positioned at the second end of the filter media;
(i) the second end construction being open, and including a central spigot projecting away from the filter media and surrounding and defining a central liquid flow aperture in liquid flow communication with the open filter interior;
(ii) a seal member positioned on the spigot to define a seal pattern non-orthogonal to the central axis of the filter media; and,
(iii) a non-seal member of a projection/receiver rotational alignment arrangement positioned on the second end construction at a location to engage another member of the projection/receiver rotational alignment arrangement on a liquid flow collar, in selected rotational alignment, in use;
(A) the non-seal member of the projection/receiver rotational alignment arrangement on the second end construction including a radial abutment member having an abutment surface; and,
(B) the radial abutment member defining a gap between a portion of the radial abutment member and a portion of the central spigot; and

(iv) the second end construction includes a radially directed fin member positioned extending in a direction between the central spigot and an outer perimeter of the second end construction.

2. A liquid filter cartridge according to claim 1 wherein:
(a) the seal member is configured to define a circular perimeter definition in projection.

3. A liquid filter cartridge according to claim 1 wherein:
(a) the first end construction is a closed end construction.

4. A liquid filter cartridge according to claim 3 wherein:
(a) the first end construction is closed by a bypass valve arrangement.

5. A liquid filter cartridge according to claim 1 wherein:
(a) the seal member is positioned radially outwardly from the central axis no more than a maximum extent of projection of the filter media from the central axis.

6. A liquid filter cartridge according to claim 5 wherein:
(a) the seal member is positioned radially outwardly from the central axis no more than 80% of a maximum extent of projection of the filter media from the central axis.

7. A liquid filter cartridge according to claim 1 wherein:
(a) the seal member extends at an angle of at least 5° and not more than 40° to a plane orthogonal to the central axis.

8. A liquid filter cartridge according to claim 1 wherein:
(a) the abutment surface of the radial alignment abutment member projects in a direction away from the media pack a distance further than at least a portion of the seal member closest to the media pack.

9. A liquid filter cartridge according to claim 1 wherein:
(a) the radial abutment member defines a collar receiving gap between a portion of the radial abutment member and a portion of the spigot;
(i) the collar-receiving gap being traversed by the radial fin member at a location between the gap and the media pack.

10. A liquid filter cartridge according to claim 1 wherein:
(a) the radial abutment member defines a cam end remote from the media pack which is slanted from a peak, adjacent the abutment surface, toward the media pack.

11. A liquid filter cartridge according to claim 1 wherein:
(a) the central spigot includes an end tip having an end surface non-orthogonal to the central axis of the media.

12. A liquid filter cartridge according to claim 1 wherein:
(a) the second end construction includes an outer perimeter with a housing-engagement radial projection arrangement thereon.

13. A liquid filter cartridge according to claim 12 wherein:
(a) the housing-engagement radial projection arrangement comprises a pair of spaced radially flexible tabs each having a radially outwardly directing projection arrangement thereon.

14. A liquid filter according to claim 1 wherein:
(a) the spigot includes a notch therein positioned to extend from engagement with an end tip of the spigot, in a direction toward the media.

15. A liquid filter cartridge according to claim 1 wherein:
(a) the spigot has a maximum extension radially from the central axis that is not greater than 80% of a maximum radial extension of the media from the central axis.

16. A liquid filter assembly including:
(a) a liquid flow collar defining a central liquid flow passageway therethrough with a central axis and having a first member of a projection/receiver rotational alignment arrangement positioned thereon;
(i) the liquid flow collar including a seal surface oriented to be sealingly engaged by a seal, the seal surface defining a seal pattern non-orthogonal to a central axis of the liquid flow collar; and,

(b) a liquid filter cartridge oriented in releasable, sealed, liquid flow engagement with the liquid flow collar; the liquid filter cartridge comprising:
(i)a filter media pack comprising filter media surrounding an open filter interior;
(A) the filter media having first and second, opposite, ends; and, defining a central axis;

(ii) a first end construction positioned at the first end of the filter media; and,
(iii) a second end construction positioned at the second end of the filter media;
(A) the second end construction being open, and including a central spigot projecting away from the filter media and surrounding and defining a central liquid flow aperture in liquid flow communication with the open filter interior;
(B) a seal member positioned on the spigot to define a seal pattern non-orthogonal to the central axis of the filter media; and,
(C) a non-seal member of a projection/receiver rotational alignment arrangement positioned on the second end construction at a location to engage another member of the projection/receiver rotational alignment arrangement on the liquid flow collar, in selected rotational alignment, in use;
(1) the non-seal member of the projection/receiver rotational alignment arrangement on the second end construction including a radial abutment member having an abutment surface; and,
(2) the radial abutment member defining a gap between a portion of the radial abutment member and a portion of the central spigot; and

(D) the second end construction including a radially directed fin member positioned extending in a direction between the central spigot and an outer perimeter of the second end construction;

(c) the liquid filter cartridge being positioned with:
(i) the open filter interior of the filter cartridge in liquid flow communication, through the spigot on the second seal construction, with a liquid flow collar central liquid flow passageway;
(ii) the seal member on the spigot in sealing engagement with the seal engagement surface on the liquid flow collar; and,
(iii) the first member of a projection/receiver rotational alignment arrangement on the liquid flow collar engaged with the non-seal member of the projection/receiver rotational alignment arrangement on the second end construction in selected rotational alignment between the cartridge and the liquid flow collar.

17. A liquid filter assembly according to claim 16 wherein:
(a) the liquid flow collar is secured to a housing of an in-tank filter assembly.

18. A liquid fi

Assignees

• Piva Luca
• Buratto Fabrizio
• Johnson Jason P
• Joscher Kurt Bryan
• Frembgen Daniel Robert
• Formica Claudio
• Marangoni Francesco
• Donaldson Co Inc

Inventors

• Piva Luca
• Buratto Fabrizio
• Johnson Jason P
• Joscher Kurt Bryan
• Frembgen Daniel Robert
• Formica Claudio
• Marangoni Francesco

Classifications

• B01D2201/4046

  Means for avoiding false mounting of different parts · CPC title

• B01D35/147 Primary

  Bypass or safety valves · CPC title

• B01D2201/0415

  Details of supporting structures · CPC title

• B01D2201/291

  End caps · CPC title

• B01D35/027

  rigidly mounted in or on tanks or reservoirs (B01D35/04 takes precedence) · CPC title