BREATHING APPARATUS Russian patent published in 2008 - IPC B63C11/20 

FIELD: underwater swimming outfit; air supply systems for frogmen.

SUBSTANCE: proposed breathing apparatus includes inhalation and exhalation systems. Inhalation system is made in form of air supply regulator having body with mouthpiece and diaphragm forming breathing chamber closed with cover, movable lever secured in breathing chamber and limit switch and electric cable built in air supply passage which is shut-off by outlet valve. Exhalation system is made in form of air outlet valve built in regulator body and connected with outlet holes. Air supply regulator is connected with electric pump and float by means of air supply hoses. Float consists of safety valve with thrust spring, sleeve and movable bush with inlet holes which is located in thrust washer provided with movable sealing gasket. Rubber gasket with round slot is laid between thrust washer and sleeve.

EFFECT: enhanced safety of swimming.

2 cl, 2 dwg