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US 6,585,792 B2Granted
Air filtering system having easily removable and replaceable filter element, and methods
AssigneeDonaldson Company, Inc.
InventorsKirk A. Schneider, Jarren B. Mills, Daniel E. Adamek, Terrance D. Feddersen
Life of this patent
Estimating the term…
Abstract
An air filter assembly for removing particulate contaminants, chemical contaminants, biological contaminants, or any combination thereof, from airplane cabin air. The filter assembly is lightweight and compact in size. Minimal clearance is needed in order to remove and replace the filter element.
Claims21
An air filter system comprising:
- (a) a housing having an inlet and an outlet, the inlet receiving dirty air to an interior of the filter system, and the outlet receiving clean air from the interior, said housing comprising:
- (i) a first rail fixedly attached to the interior of said housing;
- and
- (ii) a second rail movably attached to said first rail;
- (b) a filter element positioned within said housing, said filter element comprising:
- (i) filtration media;
- (ii) a frame supporting said filtration media;
- and
- (iii) a peg extending from the frame of said filter element;
- (c) a locking system for retaining said filter element within said housing, said locking system comprising:
- (i) said first rail fixedly attached to the interior of said housing, said first rail having a first retaining feature therein;
- (ii) said second rail movably attached to said first rail, said second rail having a second retaining feature therein;
- (iii) said first retaining feature aligned with said second retaining feature when said second rail is in an extended position, and said first retaining feature offset from said second retaining feature when said second rail is in a retracted position;
- and
- (iv) said peg constructed and arranged to fit within said first retaining feature and said second retaining feature.
12 more elements
An air filter system comprising:
- (a) a housing having an inlet, an outlet, and an interior, said housing configured to mount a filter element between said inlet and said outlet;
- (b) a filter element loading and locking mechanism comprising:
- (i) a first guide member on said filter element;
- (ii) a second guide member mounted to said housing and configured to cooperatively engage said first guide member such that said filter element can be slideably inserted into said housing by contact primarily only between said first guide member and said second guide member, said second guide member comprising a first rail fixedly attached to said housing and a second rail movably attached to said first rail;
- (iii) a positioning mechanism in said second rail for cooperatively engaging said first guide member as said filter element is being inserted into said housing for operatively positioning said filter element within said housing;
- and
- (iv) a locking mechanism for retainably locking said filter element in said operative position.
4 more elements
Dependencies are inferred from the claim text.