RESPIRATOR Russian patent published in 2003 - IPC

FIELD: means of individual protection of man respiratory organs and designed for use under conditions of unhealthy trade. SUBSTANCE: respirator has half-mask with two filter cartridges secured by means of branch pipes, headband with cap and flexible straps fastened to fastening unit in form of pin located on filter cartridge. Filter cartridges are fastened to half-mask so that their symmetry planes intersect with symmetry plane of half-mask at angle of 90±10^°. Pins of filter cartridges are displaced relative to cartridge symmetry plane so that centers of branch pipe and pin and center line of headband flexible strap are located in same plane. EFFECT: reduced limiting of field of view and uniform distribution of half-mask pressure on face integument over obturation strip, spare effect on user's organism and psychics due to improved design of respirator. 5 dwg, 1 tbl