REGENERATIVE RESPIRATOR PX-90 USING CHEMICALLY-BOUND OXYGEN Russian patent published in 1998 - IPC

FIELD: individual protection of respiratory organs. SUBSTANCE: regenerative canisters are positioned symmetrically in case-kit and coupled to each other by rubber angles and air duct. Heat exchanger is arranged inside case-kit between regenerative canisters and connected to them by rubber angles. Boxes with inlet and outlet valves are located in respective inlet and outlet hoses. Saliva removing pump is made as rubber bulb and coupled to box containing mouth-piece and submental element. Corrugated tube is coupled to air duct and connected directly to respiratory bag. Regenerative canisters in respirator are represented by mine self-rescuer canisters with chemically-bound oxygen based on potassium superoxide. EFFECT: stable protective parameters, prolonged service life. 2 cl, 5 dwg