CPC A62B 23/02 (2013.01) [B01D 46/523 (2013.01); A62B 18/025 (2013.01); B01D 2265/04 (2013.01)] | 18 Claims |
1. A filter element, comprising:
filter media having a front wall and a rear wall each comprising a proximal end and a distal end, a side portion at the proximal ends of the front wall and the rear wall, and an outlet, wherein the filter media comprises a folded filter media portion that forms the front wall, the rear wall, and the side portion, and wherein the side portion interfaces between the front wall and the rear wall; and,
a breather tube attached to the filter media in fluid communication with the outlet, wherein the filter media defines an internal volume enclosed by the front wall and the rear wall such that air enters the internal volume through the filter media and exits through the breather tube to be delivered to a user; and,
wherein the outlet is positioned at least partially on the side portion, and the front wall and the rear wall of the filter media are joined together at least partially along a perimeter such that leakage of air cannot occur between the front and rear walls.
|