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US 11,007,468 B2Granted
Method of forming filter arrangements; and, apparatus
AssigneeDonaldson Company, Inc.
InventorBenny K. Nelson
Life of this patent
Estimating the term…
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.
Claims29
An air filter cartridge arrangement comprising:
- (a) a filter media pack having first and second, opposite, flow faces and a plurality of parallel ridges extending in an axial direction;
- (i) the media pack being formed from an arrangement of alternating facing media and media with the parallel ridges;
- (ii) the 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 media pack;
- (i) the preform includes an axially extending portion comprising a first part that overlaps the outer periphery of the 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 media pack;
- (i) a portion of the molded-in-place housing seal arrangement extending through the plurality of apertures;
- and
- (ii) 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.
10 more elements
An air filter cartridge comprising:
- (a) a media pack having first and second, opposite, flow faces and a plurality of parallel ridges extending in an axial direction;
- (i) the media pack being formed from an arrangement of alternating facing media and media with parallel ridges, and stacked to form the media pack;
- (ii) the 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 media pack;
- the preform includes an axially extending portion comparing a first part that overlaps the outer periphery of the 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;
- (iv) a structure extending across the inlet flow face;
- and
- (c) a molded-in-place housing seal arrangement molded onto the preform and the outer periphery of the media pack;
- (i) a portion of the molded-in-place housing seal arrangement extending through the plurality of apertures;
- and
- (ii) 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.
11 more elements
Dependencies are inferred from the claim text.