Patent ID: 6247471
Filing Date: 2001-06-19
Classification: A62B,B64D

Abstract:
An emergency breathing device for providing a user with breathable oxygen and protection, the device comprising:a hood disposed in a premises proximate to an oxygen control device;the oxygen control device connected exteriorly of the hood and including a valve body, an actuator, and an oxygen bottle mated to the valve body;the valve body providing airflow communication with an interior of the hood;the oxygen control device connected to a plumbed breathable oxygen supply through a plumbed source disconnect mechanism which is removably connected to the valve body, and which when connected permits airflow from the plumbed breathable oxygen supply and valve body to the interior of the hood;a piercing mechanism within the valve body for causing airflow to commence from the oxygen bottle in response to operation of the actuator; anda cam within the valve body rotatable in response to operation of the actuator, the cam being disposed to engage the piercing mechanism when rotated, thereby causing penetration of the bottle, permitting oxygen to flow from the oxygen bottle to the interior of the hood and simultaneously forcing the plumbed source disconnect mechanism to disconnect from the valve body,whereby the user may don the hood to receive breathable oxygen initially from the plumbed source and thereafter from the oxygen bottle upon operation of the actuator, or from the oxygen bottle alone.