Patent ID: 6823867
Filing Date: 2004-11-30
Classification: A62B

Abstract:
A pouch and blower unit for a powered air-purifying respirator system, the blower unit being inside the pouch and of a type comprising:(a) an air inlet to which a filter cartridge can be detachably-connected, (b) an air outlet to which a breathing tube of the respirator system can be detachably-connected, and (c) a blower operable to draw air into the unit through the air inlet and to deliver filtered air to the air outlet; wherein the pouch comprises; (i) a closable main opening through which the blower unit can be inserted into the pouch, (ii) an air inlet opening positioned to register with the air inlet of the blower and permit the connection of the filter cartridge thereto, (iii) an air outlet opening positioned to register with the air outlet of the blower unit and permit the connection of the breathing tube thereto, and (iv) respective seals for each of the said openings; the seals being so configured that, when the pouch is closed with the blower unit located inside and connected into the respirator system, the seals inhibit or prevent the passage of particulate or gaseous material into the pouch through the said openings.