Hood respirator for protection against biological hazards

摘要

An air purifying respirator hood, or more particularly, an air purifying, particulate respirator hood suitable for protection against biological hazards in military and civilian environments. The respirator hood includes an elastic fabric material which blocks the penetration of liquids and airborne particulate contaminants including biological aerosols, yet allows the transmission of moisture vapor and heat transfer to improve user comfort. It also includes at least one HEPA filter, at least one transparent lens, and a breathe-through airflow valve assembly.