FILTER CARTRIDGES; FEATURES AND METHODS OF ASSEMBLY; AIR CLEANER ASSEMBLIES; AND, FILTER CARTRIDGE COMBINATIONS

摘要

Filter cartridge arrangements, features thereof and assembly for use therewith, are provided. Selected filter cartridge features disclosed are particularly well adapted for use with a safety or secondary filter cartridge, usable with media thereof projecting into an open interior of a main filter cartridge, in use. An example filter cartridge is described, with a non-pleated end and a pleated end, although variations are also described. Advantageous main cartridges are also described. Methods of assembly and systems for use are described.

主权项

1. A filter cartridge comprising:
(a) an extension of media surrounding an open interior and having a first end and a second end;
(b) a housing radial seal member positioned at a location within 50 mm of the first end;(i) the housing radial seal member being configured to form a radially outwardly directed radial seal; (c) an end piece adjacent the second end of the media;
(i) the end piece including: an outer surface directed away from the first media end; and, an inner surface directed toward the first media end;
(A) the inner surface of the end piece having a central recess therein extending in a direction away from the first media end; and, (d) a cushion member including a portion positioned in, and surrounding, the central recess.