Crankcase ventilation filter assembly; components; and methods

Patent metadata

Field	Value
Publication number	US-9353658-B2
Application number	US-201414269552-A
Country	US
Kind code	B2
Filing date	May 5, 2014
Priority date	Aug 2, 2007
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

Crankcase ventilation filter arrangements and components therefore are described. Example arrangements are described. In one, a serviceable filter cartridge includes a check valve therein, for protection during vehicle rollover. Handle arrangements are also described. Methods of use are described.

First claim

What is claimed is:

1. A filter cartridge, for crankcase ventilation filtration, comprising:
(a) a media pack surrounding an open filter interior;
(b) a central media support tube surrounded by the media pack;
(c) first and second seal members; and,
(d) first and second end pieces positioned with the media pack therebetween;
(i) the first end piece including a first axial projection thereon extending in a direction away from the second end piece;
(A) the first end piece including an outer perimeter and a central aperture;
(B) the first axial projection including a base section with the first seal member thereon; and,
(C) the first axial projection including a projection extending from adjacent the first seal member in a direction away from the base section;

(ii) the second end piece having an outer perimeter and including a central aperture therethrough in communication with the open filter interior;
(iii) the second end piece including a second seal support thereon projecting in a direction away from the first end piece; the second seal support on the second end piece supporting the second seal member; and,
(iv) the first seal member being mounted on the first seal support for radially outwardly directed sealing engagement with a surrounding portion of an assembly in use;
(A) the first seal member having a different outer dimension from each of an outer perimeter and an inner perimeter of the media pack; and,

(v) the second seal member being mounted on the second seal support in an orientation for radially outwardly directed sealing engagement with a surrounding portion of an assembly, in use;
(A) the second seal member having a different outer dimension from each of an outer perimeter and an inner perimeter of the media pack; and,
(B) the second seal member having a different outer perimeter than the first seal member.

2. A crankcase ventilation filter cartridge according to claim 1 wherein:
(a) the second seal support on the second end piece supports the second seal member at a location in axial overlap with the media pack.

3. A crankcase ventilation filter cartridge according to claim 2 wherein:
(a) the second seal support on the second end piece supports the second seal member at a location spaced across the second end piece at least 20% of a distance across the second end piece from the outer perimeter of the second end piece toward the central aperture.

4. A crankcase ventilation filter cartridge according to claim 3 wherein:
(a) the second seal support on the second end piece supports the seal member at a location spaced across the second end piece at least 20% of a distance across the second end piece from the central aperture toward the outer perimeter.

5. A crankcase ventilation filter cartridge according to claim 3 wherein:
(a) the first seal support on the first end piece supports the first seal member at a location in axial overlap with the media pack.

6. A crankcase ventilation filter cartridge according to claim 5 wherein:
(a) the first seal support on the first end piece supports the seal member at a location spaced across the first end piece at least 20% of a distance across the first end piece from the outer perimeter of the first end piece toward the central aperture.

7. An air filter cartridge according to claim 1 wherein:
(a) the first axial projection includes a framework having a rail and a rail support arrangement.

8. A filter cartridge according to claim 7 wherein:
(a) the rail has a shape with at least one opening therein extending over a radial arc within the range of 30°-60°, inclusive.

9. A filter cartridge according to claim 8 wherein:
(a) the rail on the framework comprises two arcuate sections spaced by two gaps.

10. A filter cartridge according to claim 7 wherein:
(a) the rail on the framework comprises two arcuate sections spaced by two gaps.

11. A filter cartridge according to claim 1 wherein:
(a) the second end piece includes a drain aperture arrangement therethrough, in overlap with an end of the media pack.

12. A filter cartridge according to claim 11 wherein:
(a) the drain aperture arrangement in the second end cap is spaced from the outer perimeter of the second end piece at least 40% of a distance from an outer perimeter of the second end piece toward a central aperture of the second end piece.

13. An air filter cartridge according to claim 1 wherein:
(a) the first seal member has a smaller outer dimension than an outer perimeter of the media pack.

14. An air filter cartridge according to claim 13 wherein:
(a) the second seal member has a smaller outer dimension than an outer perimeter of the media pack.

15. An air filter cartridge according to claim 1 wherein:
(a) the second seal member has a smaller dimension than an outer perimeter of the media pack.

16. A crankcase ventilation filter assembly according to claim 1 wherein:
(a) the second end piece of the filter cartridge includes an outer periphery with a plurality of spaced, radially outwardly projecting, projections thereon.

17. A crankcase ventilation filter assembly comprising:
(a) a housing defining an interior and including an air flow inlet and an air flow outlet;
(i) the housing including a cover assembly including: an air flow outlet tube, including an inner section; an internal flange; and, an external flange; and,
(ii) the housing including a housing bottom section defining an interior and being releasably secured to the cover assembly; the bottom section including a bottom with a liquid drain surrounded by an internal seal flange; and,

(b) a filter cartridge separate from the housing and removably positioned within the housing interior; the filter cartridge comprising:
(i) a media pack surrounding an open filter interior;
(ii) a central media support tube surrounded by the media pack;
(iii) first and second seal members; and,
(iv) first and second end pieces positioned with the media pack therebetween;
(A) the first end piece including a first axial projection thereon extending in a direction away from the second end piece;
(1) the first end piece including an outer perimeter and central aperture;
(2) the first axial projection including a base section with the first seal member thereon; and,
(3) the first axial projection including a projection extending from adjacent the first seal member in a direction away from the base section;

(B) the second end piece having an outer perimeter and including a central aperture therethrough in communication with the open filter interior;
(C) the second end piece including a second seal support thereon projecting in a direction away from the first end piece; the second seal support on the second end piece supporting the second seal member; and,
(D) the first seal member being mounted on the first seal support in radially outwardly directed sealing engagement with the internal flange on the cover assembly;
(1) the first seal member having a different outer dimension from each of an outer perimeter and an inner perimeter of the media pack; and,

(E) the second seal member being mounted on the second seal support in radially outwardly directed sealing engagement with the internal seal flange in the housing bottom;
(1) the second seal member having a different outer dimension from each of an outer perimeter and an inner perimeter of the media pack; and,
(2) the second seal member having a different outer perimeter than the first seal member.

18. A crankcase ventilation filter assembly according to claim 17 whe

Assignees

• Donaldson Co Inc

Inventors

• Jacob Gregoire
• Wood Robert

Classifications

• B01D46/2414

  End caps including additional functions or special forms · CPC title

• B01D46/0031

  with collecting, draining means · CPC title

• B01D46/0087

  Bypass or safety valves · CPC title

• F01M2013/0438

  with a filter · CPC title

• F01M13/04 Primary

  having means for purifying air before leaving crankcase, e.g. removing oil · CPC title