MULTIFUNCTIONAL POLYNOMIAL RESPIRATOR FILTER Russian patent published in 2005 - IPC

FIELD: air purification equipment, particularly to remove hazardous vapor and aerosol from air.

SUBSTANCE: filter has cylindrical body with head which connects filter to mask, dust plug, charge member, upper and lower nets to connect charge member, aerosol filter and bottom with inlet orifice. Charge arranged between upper and lower nets provides carbon monoxide removal from air. Additional catalyst layer which sorbs and neutralizes organic vapor, sulfur-containing and other acid vapors is arranged between aerosol filter and lower net. Breathing valve is detachably secured in the neck.

EFFECT: increased air cleaning quality and service life of the filter, improved operational reliability.

5 cl, 5 dwg