REGENERATIVE CANISTER OF INSULATING BREATHING APPARATUS Russian patent published in 2006 - IPC A62B19/00 

FIELD: regenerating canisters with chemically coupled oxygen.

SUBSTANCE: regenerative canister has case with grained regenerating product disposed between support and loading mesh, cap, continuous air-duct tube passing through support and loading meshes, filter disposed inside air-duct tube and starting briquette mounted in layer of regenerating product. Canister additionally has second air-duct tube with filter disposed inside. The tube passes through support and loading meshes. The tube is disposed at some distance from first air-duct tube which distance equals to 0,5-0,7 size of large axis of cross-section of air-duct tube. Both tubes are mounted symmetrically in relation to small axis of cross-section of canister. Area of cross-section of any air-duct tube equals to 0,03-0,05 square of canister's cross-section.

EFFECT: uniform treatment of regenerating product; reduced aerodynamic resistance of product layer; prolonged time of protection of regenerating canister.

4 dwg, 1 tbl