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US 2016/0175756 A1Published application
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.
Claims22
1-6. (canceled)
An air filter cartridge arrangement comprising:
- (a) media having opposite inlet and outlet flow faces and comprising inlet flutes and outlet flutes;
- (i) the media being closed to flow from the outlet flow face of air entering the inlet face, without filtering flow through the media;
- (b) a preform having a portion surrounding the media and projecting away from the media;
- and,
- (c) a molded-in-place region of seal material having:
- (i) a first portion molded to the media;
- and,
- (ii) a second portion molded-in-place and having embedded therein a portion of the preform surrounding and projecting radially way from the media;
- (iii) the first and second portions of the seal material being molded integral with one another.
6 more elements
An air filter cartridge arrangement comprising:
- (a) media having opposite inlet and outlet flow faces and comprising inlet flutes and outlet flutes;
- (i) the media being closed to flow from the outlet flow face of air entering the inlet face, without filtering flow through the media;
- (b) a preform arrangement having a portion surrounding the media and projecting away from the media;
- and, a portion extending across the inlet flow face;
- and,
- (c) a molded-in-place region of seal material having:
- (i) a first portion molded to the media;
- and,
- (ii) a second portion molded-in-place and having embedded therein a portion of the preform surrounding and projecting radially way from the media.
6 more elements
Dependencies are inferred from the claim text.