IP Library › Granted Patent US 12,357,934
Granted Patent B2
US 12,357,934 · App. 18/731,938 · Granted Jul 15, 2025

Filter cartridges; air cleaner assemblies; housings; features; components; and, methods

Inventors: Hubert J. Rahn (Minneapolis, MN); David J. Burton (Minneapolis, MN); Steven K. Campbell (Minneapolis, MN)
Assignee: Donaldson Company, Inc.
B01D46/0005B01D46/525B01D46/2411B01D46/62B01D2271/022B01D2271/027B01D2279/60
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Quick Facts
Patent No.
US 12,357,934
App. No.
18/731,938
Granted
Jul 15, 2025
Kind
B2
Abstract

According to the present disclosure, air cleaner assemblies, components, features, and methods relating thereto, are described. These features, in part, relate to configuration of a preferred seal arrangement and seal surface of the cartridge. Particular arrangements are shown, in which: the filter cartridge includes a seal arrangement having a axial pinch seal surface with a projection/recess contour including at least one projection thereon; and, the cartridge includes a seal contour projection stabilizing portion at a location in perimeter alignment with the portion of the seal pinch arrangement including the first housing engagement projection. Additional features are included that relate to clean air separator section tubes of a precleaner arrangement secured to a cartridge. These features can be used in cartridges including features outlined above, or in alternative cartridges. Additional features of air cleaner arrangements and filter cartridges in accord with the above are described.

Claims (70)

1. An air filter cartridge comprising:

(a) a filter media pack comprising first and second, opposite, flow ends with media extending therebetween, and having an axial direction corresponding to an axis extending through the filter media pack first and second, opposite, flow ends;

(b) a preform comprising a shell extending peripherally around the filter media pack and a projection extending radially away from the shell, wherein:

(i) the preform is secured to the media pack; and

(ii) the preform projection extending radially away from the preform shell comprises a recessed portion of the preform projection positioned recessed, axially, from a non-recessed portion of the preform projection so that the recessed portion of the preform projection is closer to the filter media pack second flow end than portions of the non-recessed portion of the preform projection located at opposite sides of the recessed portion of the preform projection, wherein the recessed portion of the preform projection comprises a flat section facing toward the filter media pack second flow end; and

(c) a seal member located on the preform.

2. An air filter cartridge according to claim 1 wherein:

(a) the preform comprises a first preform surrounding the filter media pack adjacent the second flow end, and a second preform surrounding the media pack adjacent the first flow end.

3. An air filter cartridge according to claim 2 wherein:

(a) the second preform includes a handle in axial overlap with the first flow end of the media pack.

4. An air filter cartridge according to claim 3 wherein:

(a) the handle extends from opposite sides of the second preform.

5. An air filter cartridge according to claim 2 wherein:

(a) the first preform includes a grid work arrangement extending across the second flow end of the media pack.

6. An air filter cartridge according to claim 1 wherein:

(a) the media pack has an oval, cross-sectional, shape.

7. A filter cartridge according to claim 1 wherein:

(a) the media pack has a cross-sectional shape with first and second, opposite, semi-circular ends; and, opposite first and second sides extending between the first and second semi-circular ends.

8. An air filter cartridge according to claim 1 wherein:

(a) the preform shell, surrounding the media pack, has a perimeter shape that differs from a perimeter shape of the media pack.

9. An air filter cartridge according to claim 1 wherein:

(a) the media pack has a circular, cross-sectional, shape.

10. An air filter cartridge according to claim 1 wherein:

(a) the seal member includes a portion molded in contact with, and surrounding, the filter media pack.

11. An air filter cartridge according to claim 1 wherein:

(a) the seal member is molded onto the preform.

12. An air filter cartridge according to claim 1 wherein:

(a) the seal member is located on the projection of the preform.

13. An air filter cartridge according to claim 1 wherein:

(a) the seal member comprises an axially directed seal member.

14. An air filter cartridge according to claim 1 wherein:

(a) the seal member comprises a radially directed seal member.

15. An air filter cartridge according to claim 1 wherein:

(a) the flat section extends at least 10 mm.

16. An air cleaner assembly comprising:

(a) a housing including a housing body and a clean air outlet; the housing body comprising a shelf having a recess therein, wherein the shelf recess is located closer toward the clean air outlet than portions of the shelf adjacent the shelf recess;

(b) an access cover including a dirty air inlet; and

(c) an air filter cartridge operably positioned in the housing, wherein the air filter cartridge comprises:

(i) a filter media pack comprising first and second, opposite, flow ends with media extending therebetween, and having an axial direction corresponding to an axis extending through the filter media pack first and second, opposite, flow ends;

(ii) a preform comprising a shell extending peripherally around the filter media pack and a projection extending radially away from the shell, wherein:

(A) the preform is secured to the media pack;

(B) the preform projection extending radially from the preform shell comprises a recessed portion of the preform projection positioned recessed, axially, from a non-recessed portion of the preform projection so that the recessed portion of the preform projection is closer to the filter media pack second flow end than portions of the non-recessed portion of the preform projection located at opposite sides of the recessed portion of the preform projection, wherein the recessed portion of the preform projection comprises a flat section facing toward the media pack second flow end; and

(C) the recessed portion of the preform projection being configured to engage the shelf recess of the housing body; and

(iii) a seal member located on the preform.

17. An air cleaner assembly according to claim 16 wherein:

(a) the seal member molded onto the preform.

18. An air cleaner assembly according to claim 16 wherein:

(a) the seal member is located on the projection of the preform.

19. An air cleaner assembly according to claim 16 wherein:

(a) the preform comprises a grid work arrangement thereon extending across the second flow end of the media pack.

20. An air cleaner assembly according to claim 16 including:

(a) a second preform comprising a portion surrounding the media pack adjacent the first flow end.

21. An air cleaner assembly according to claim 20 wherein:

(a) the second preform includes a handle thereon, in axial overlap with the first flow end of the media pack.

22. An air cleaner assembly according to claim 21 wherein:

(a) the second preform includes a grid work arrangement in axial overlap with the first flow end of the media pack.

23. An air cleaner assembly according to claim 16 wherein:

(a) the seal member comprises an axially directed seal member.

24. An air cleaner assembly according to claim 16 wherein:

(a) the seal member comprises a radially directed seal member.

25. An air cleaner assembly according to claim 16 wherein:

(a) the flat section extends at least 10 mm.

26. An air filter cartridge comprising:

(a) a filter media pack comprising first and second, opposite, flow ends with media extending therebetween, and having an axial direction corresponding to an axis extending through the filter media pack first and second, opposite, flow ends;

(b) a preform comprising a shell extending peripherally around the filter media pack and a projection extending radially away from the shell, wherein:

(i) the preform is secured to the media pack; and

(ii) the preform projection extending radially away from the preform shell comprises a recessed portion of the preform projection positioned recessed, axially, from a non-recessed portion of the preform projection so that the recessed portion of the preform projection is closer to the filter media pack second flow end than portions of the non-recessed portion of the preform projection located at opposite sides of the recessed portion of the preform projection, wherein the recessed portion of the preform projection includes a section facing the filter media pack second flow end that is parallel to a section of the non-recessed portion of the preform projection; and

(c) a seal member located on the preform.

27. An air filter cartridge according to claim 26 wherein:

(a) the section of the recessed portion that is parallel extends at least 10 mm.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 25, 2024
From: RAHN, HUBERT J.; BURTON, DAVID J.; CAMPBELL, STEVEN K.
To: DONALDSON COMPANY, INC.
Reel/Frame 068695/0870 →
Continuity (6)
Continuation 18374272 · Sep 28, 2023
Continuation 17520990 · Nov 8, 2021
Continuation 16642768
Provisional Application 62685394 · Jun 15, 2018
Provisional Application 62552836 · Aug 31, 2017
Related Publication 20240399277A1 · Dec 5, 2024
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