FILTERING CARTRIDGE Russian patent published in 2001 - IPC

FIELD: individual's respiratory organs protecting facilities. SUBSTANCE: dust-and gas-tight cartridge for respirators has casing with branch pipe and burden placed in casing and retained there by means of upper and lower nets, compensating chamber, and dust-tight pad. Compensating chamber is provided with corrugations converging to branch pipe for defining channels. Corrugations are attached circumferentially of branch pipe in the vicinity of zone, where air flow is discharged into branch pipe, so as to define arched parts between them, with sizes of arched parts being proportional to area of bases of related channels. Filtering cartridges of such construction are preferably used in production enterprises with working conditions hazardous for individuals' health. EFFECT: enhanced reliability in operation and simplified construction. 2 dwg, 1 ex