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

1. An air cleaner assembly comprising:

(a) a main filter cartridge;

(b) a housing including an air flow inlet and an air flow outlet; the housing comprising a housing body and an access cover;

(i) the housing body having an open service access end; an air flow outlet; a main filter cartridge sealing shelf recessed from the service access end; and, the housing body is sized to receive the main filter cartridge; and,

(ii) the access cover including an inner projection with a perimeter rim projecting into the housing body to a location surrounded by the housing body; and,

(A) the perimeter rim extending over an axial distance of at least 50 mm;

(B) the inner perimeter rim including a side air flow aperture arrangement therethrough; and,

(C) the inner projection having an outer surface with a plurality of spaced, axially extending, projection ribs thereon; and

wherein the main filter cartridge is removably positioned within the housing body.

2. An air cleaner assembly according to claim 1 wherein:

(a) the housing body has an interior with, at a location adjacent the open service access end:

(i) a first, longer, cross-sectional dimension; and,

(ii) a second, shorter, cross-sectional dimension; the second, shorter cross-sectional dimension being a dimensional taken perpendicular to the first, longer, cross-sectional dimension, at a location half way across the first, longer, cross-sectional dimension and perpendicular thereto.

3. An air cleaner assembly according to claim 1 wherein:

(a) the air cleaner housing includes a side air flow inlet.

4. An air cleaner assembly according to claim 1 further comprising:

(a) the main filter cartridge comprising:

(i) a media pack having an inlet end and an opposite outlet end; and,

(ii) a housing seal arrangement comprising a perimeter pinch seal removably positioned sealingly biased against the main filter cartridge sealing shelf.

5. An air cleaner assembly according to claim 4 wherein:

(a) the media pack has an outer perimeter with a perimeter oval shape.

6. An air cleaner assembly according to claim 4 wherein:

(a) the media pack has an outer perimeter with a perimeter oval shape having: two, opposite, straight sides; and, two, opposite, curved ends.

7. An air cleaner assembly according to claim 4 wherein:

(a) the media pack comprises a coiled media strip arrangement.

8. An air cleaner assembly according to claim 7 wherein:

(a) the coiled media strip arrangement comprises a coiled strip of a first media sheet secured to a second media sheet.

9. An air cleaner assembly according to claim 7 wherein:

(a) the coiled media strip arrangement comprises a coiled strip of a fluted media sheet secured to a second media sheet.

10. An air cleaner assembly according to claim 4 wherein:

(a) the main filter cartridge includes an outer shell surrounding the media pack and extending from the housing seal arrangement at least to an end of the media pack most remote from the housing seal arrangement.

11. An air cleaner assembly according to claim 10 wherein:

(a) the outer shell includes an outlet end, remote from the housing seal arrangement, having a media support grid thereon.

12. An air cleaner assembly according to claim 10 wherein:

(a) the outer shell includes an outlet end, remote from the housing seal arrangement, having a safety filter cartridge pressure flange thereon.

13. An air cleaner assembly according to claim 12 wherein:

(a) the outer shell includes an outer shell outer perimeter edge, at the outlet end;

(i) the safety cartridge pressure flange being spaced radially inwardly from the outer shell outer perimeter edge.

14. An air cleaner assembly according to claim 12 wherein:

(a) the safety cartridge pressure flange comprises at least one axial projection.

15. An air cleaner assembly according to claim 10 wherein:

(a) the outer shell, of the main filter cartridge, includes a perimeter, radially outwardly extending, projection arrangement thereon, having a portion embedded in the perimeter pinch seal of the housing seal arrangement.

16. An air cleaner assembly according to claim 15 wherein:

(a) the perimeter projection arrangement on the outer shell comprises a perimeter flange having a plurality of resin flow apertures therethrough.

17. An air cleaner assembly according to claim 4 wherein:

(a) the perimeter pinch seal includes a perimeter, axial, seal surface oriented facing in a direction corresponding to a direction of the outlet end of the media pack.

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

(a) the perimeter, axial, seal surface is spaced from the media by a housing portion receiving groove.

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

(a) the housing body includes a main filter cartridge stabilizing flange projecting into the housing portion receiving groove to a location between the perimeter, axial, seal surface and the media pack.

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

(a) the main filter cartridge includes a peripheral seal mounting projection projecting radially outwardly from the media pack and into the housing seal arrangement.

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

(a) the main filter cartridge includes an outer shell surrounding the media pack and extending from the housing seal arrangement at least to an end of the media pack remote from the housing seal arrangement; and

(b) the peripheral seal mounting projection is a radially outwardly extending flange on the outer shell.

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

(a) the perimeter, axial, seal surface, of the perimeter pinch seal, is a contoured surface.