A face mask uses a neck hanger with axillary oxygen to facilitate the flow of filtered fresh air inside the face mask for inhaling. Neck hanger filters the fresh air from the environment mixes with oxygen that is stored in the neck hanger before releasing inside the face mask for inhaling. The neck hanger is a lightweight tube that houses fans, HEPA or ULPA filters, compressed oxygen, a regulator, and a battery with a control circuit. One fan sucks the air from the environment that after being filtered and mixed with oxygen is blown into the face mask through an air pipe that is attached to both the neck hanger and face mask. The exhaled air from interior of the mask is sucked by a second fan through another air pipe, then filtered and released into the environment.

A face mask uses a neck hanger with axillary oxygen to facilitate the flow of filtered fresh air inside the face mask for inhaling. Neck hanger filters the fresh air from the environment mixes with oxygen that is stored in the neck hanger before releasing inside the face mask for inhaling. The neck hanger is a lightweight tube that houses fans, HEPA or ULPA filters, compressed oxygen, a regulator, and a battery with a control circuit. One fan sucks the air from the environment that after being filtered and mixed with oxygen is blown into the face mask through an air pipe that is attached to both the neck hanger and face mask. The exhaled air from interior of the mask is sucked by a second fan through another air pipe, then filtered and released into the environment.

A self-contained breathing apparatus includes an air cylinder pressurized to about 5500 psig, wherein the air cylinder is compatible with infrastructure used in conjunction with the air cylinder. The self-contained breathing apparatus also includes a first regulator valve for reducing air pressure from the air cylinder to a predetermined level. A second regulator valve is also provided for reducing the air pressure from the predetermined level to a level suitable for use by an operator, wherein air is supplied from the second regulator valve to the operator via a mask. The self-contained breathing apparatus further includes a frame for supporting the air cylinder on the back of the operator. Other embodiments are described and claimed.

A self-contained breathing apparatus includes an air cylinder pressurized to about 5500 psi, wherein the air cylinder is compatible with infrastructure used in conjunction with the air cylinder. The self-contained breathing apparatus also includes a first regulator valve for reducing air pressure from the air cylinder to a predetermined level. A second regulator valve is also provided for reducing the air pressure from the predetermined level to a level suitable for use by an operator, wherein air is supplied from the second regulator valve to the operator via a mask. The self-contained breathing apparatus further includes a frame for supporting the air cylinder on the back of the operator. Other embodiments are described and claimed.

A self-contained breathing apparatus includes an air cylinder pressurized to about 5500 psi, wherein the air cylinder is compatible with infrastructure used in conjunction with the air cylinder. The self-contained breathing apparatus also includes a first regulator valve for reducing air pressure from the air cylinder to a predetermined level. A second regulator valve is also provided for reducing the air pressure from the predetermined level to a level suitable for use by an operator, wherein air is supplied from the second regulator valve to the operator via a mask. The self-contained breathing apparatus further includes a frame for supporting the air cylinder on the back of the operator. Other embodiments are described and claimed.

A breathing apparatus and method adjusting air flow in a breathing apparatus are provided. The breathing apparatus comprises: a first face piece for directing a flow of air towards the user's mouth and nostrils; a second face piece for directing exhaled breath away from the user's mouth and nostrils; at least one sensor, coupled to the first or second face piece, for monitoring the user's breathing; a controller that adjusts the flow of air to the first face piece and the extraction of air exhaled by the user through the second face piece based on an output from the at least one sensor.

A safety breathing apparatus has a delivery element configured to deliver respirable gas to a respiratory system of a user. The apparatus includes a breathing hose in fluid communication with a first source of respirable gas. A valve housing includes a first port configured to be couple to the delivery element, a second port configured to be coupled to the breaking hose, and a third port configured to dock with a second source of respirable gas without exposing the user to a surrounding atmosphere.

A self-contained breathing apparatus includes an air cylinder pressurized to about 5500 psig, wherein the air cylinder is compatible with infrastructure used in conjunction with the air cylinder. The self-contained breathing apparatus also includes a first regulator valve for reducing air pressure from the air cylinder to a predetermined level. A second regulator valve is also provided for reducing the air pressure from the predetermined level to a level suitable for use by an operator, wherein air is supplied from the second regulator valve to the operator via a mask. The self-contained breathing apparatus further includes a frame for supporting the air cylinder on the back of the operator. Other embodiments are described and claimed.

A self-contained breathing apparatus includes an air cylinder pressurized to about 5500 psi, wherein the air cylinder is compatible with infrastructure used in conjunction with the air cylinder. The self-contained breathing apparatus also includes a first regulator valve for reducing air pressure from the air cylinder to a predetermined level. A second regulator valve is also provided for reducing the air pressure from the predetermined level to a level suitable for use by an operator, wherein air is supplied from the second regulator valve to the operator via a mask. The self-contained breathing apparatus further includes a frame for supporting the air cylinder on the back of the operator. Other embodiments are described and claimed.

There is disclosed a fluid adapter for a breathable gas delivery device, such as a facemask, for delivering breathable gas to a user. The fluid adapter comprises an adapter body defining an adapter chamber; a pressurized gas inlet port in fluid communication with the adapter chamber and arranged to be fluidically coupled to a source of pressurized breathable gas and an ambient air inlet port arranged to provide fluid communication between the adapter chamber and ambient air outside of the fluid adapter. The adapter also comprises an adapter outlet port in fluid communication with the adapter chamber and arranged to be fluidically coupled to a delivery device gas inlet port of the breathable gas delivery device; and an adapter connector arranged to connect the fluid adapter to the breathable gas delivery device such that the adapter outlet port is fluidically coupled to the delivery device gas inlet port.