MULTI-CHAMBER RESPIRATOR COMPRISING SEALING DEVICES (VERSIONS), AND METHODS OF SEALING Russian patent published in 2020 - IPC A62B18/10 

FIELD: personal protection equipment.

SUBSTANCE: present invention discloses a respiratory protection device which comprises a valve unit configured to move between an open state and a closed state. A device for respiratory protection comprises a mask base forming a first chamber, a second chamber and a breathable air zone for the user. First and second respiratory air supply components are configured to be attached to the mask base such that the first chamber is in fluid communication with the first respiratory air component and second chamber is in fluid communication with second component to provide air for respiration, and a valve unit comprising one actuator movable between an open state and a closed state in which fluid communication between the first and second components is prevented to provide air for respiration and a region of breathable air, wherein said first and second chambers are substantially isolated from each other in a fluid such that the first chamber is in fluid communication with the respiratory air zone through the first inhalation port, and the second chamber is in fluid communication with the respiratory air zone through the second inhalation port. Also disclosed is a method of using the device.

EFFECT: disclosed is a multi-chamber respirator comprising sealing devices (versions), and sealing methods.

25 cl, 5 dwg