Method of forming filter arrangements; and, apparatus
AssigneeDonaldson Company, Inc.
InventorBenny K. Nelson
Life of this patent
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Abstract
A filter cartridge arrangement for use in air cleaners is provided. The filter cartridge arrangement includes a media pack including a plurality of inlet flutes and outlet flutes extending between first and second opposite flow faces and formed from an arrangement of facing sheet secured to corrugated sheet. An example cartridge includes a preform secured to the media pack. In some forms, the preform includes an arrangement extending over one of the flow faces.
Claims24
1-6. (canceled)
An air filter cartridge arrangement comprising:
- (a) a fluted media pack having first and second, opposite, flow faces and a plurality of flutes extending in an axial direction from the first flow face toward the second flow face or from the second flow face toward the first flow face;
- (i) the fluted media pack being formed from an arrangement of alternating facing media sheet and fluted media sheet;
- (ii) the fluted media pack defines an outer periphery;
- and
- (iii) wherein one of the first and second flow faces is an inlet flow face and the other of the first and second flow faces is an outlet flow face;
- (b) a preform extending around the outer periphery of the fluted media pack;
- (i) the preform includes an axially extending portion comprising a first part that overlaps the outer periphery of the fluted media pack and a second part that extends beyond the inlet flow face;
- (ii) a support structure projecting radially outwardly from the preform axially extending portion and having a plurality of apertures located between an end of the support structure and the preform axially extending portion;
- and
- (c) a molded-in-place housing seal arrangement molded onto the preform and the outer periphery of the fluted media pack;
- (i) the molded-in-place housing seal arrangement adhering the preform to the outer periphery of fluted media pack;
- (ii) a portion of the molded-in-place housing seal arrangement extending through the plurality of apertures;
- and
- (iii) the molded-in-place housing seal arrangement includes a first axially directed surface and a second axially directed surface, wherein the first axially directed surface and the second axially directed surface are configured to be pinched between opposing surfaces of an air cleaner, when operably installed in the air cleaner.
An air filter cartridge according to claim 0 wherein:
- (a) the polyurethane has a Shore-A hardness of no greater than 30.
An air filter cartridge according to claim 1 further comprising:
- (a) a label covering a portion of the outer periphery of the fluted media pack and being held in place by the molded-in-place housing seal arrangement.
Dependencies are inferred from the claim text.