Method and Apparatus for Automatically Maintaining a Desired Level of Oxygen in a Refuge

METHOD AND SYSTEM OF AUTOMATIC SWITCHING BETWEEN SOURCES OF BREATHABLE AIR IN A FIREFIGHTER AIR REPLENISHMENT SYSTEM IN ACCORDANCE WITH AIR PARAMETER BASED AUTOMATIC PURGING OF A COMPROMISED FORM THEREOF

METHOD AND SYSTEM OF AIR PARAMETER BASED AUTOMATIC BYPASSING OF A SOURCE OF BREATHABLE AIR IN A FIREFIGHTER AIR REPLENISHMENT SYSTEM IMPLEMENTED WITHIN A STRUCTURE

METHOD AND SYSTEM OF AUTOMATICALLY MODIFYING A RATE OF FILLING AN AIR BOTTLE WITH BREATHABLE AIR IN A FIREFIGHTER AIR REPLENISHMENT SYSTEM BASED ON FLOW RATE DETECTION THEREOF

Modular portable multi-crew life support system

Method and apparatus for automatically maintaining a desired level of oxygen in a refuge

NBC filtration systems

Modular NBC filtration system for protection shelters

Pathogen Protection Device

Fire evacuation room

Chemical protective shelter system

FIRE SAFETY DEVICE

Compact NBC filtration system for collective protection shelters

Method and apparatus for automatically maintaining a desired level of oxygen in a refuge

Fire escape chamber with outer cage and inner cage

AIR GULLY MANIFOLD

Life-saving system for fire in multi-storey building

Isolated refuge cabin

Membrane-enabled reverse lung

Protection cell

Safety system and method of an underground mine

Safety system and method of a tunnel structure

Method and system of air extraction process from an emergency support system

Breathable air safety system and method

Window with built-in devices that senses carbon monoxide and opens itself powered by light

"Air-Flow" a window air filter insert

Fluid disinfection apparatus

Breathable air safety system and method having at least one fill site

Breathable air safety system and method having an air storage sub-system

Ventilation system providing NBC protection

Fluid disinfection apparatus

Photolytic oxygenator with carbon dioxide fixation and separation