SMOKE FIRE ALARM Russian patent published in 2005 - IPC

Abstract RU 2262745 C2

FIELD: automatic fire alarm.

SUBSTANCE: device has optical couple, positioned in sensitive chamber, and additional chamber, with at least three ribs, one of which is positioned between the other two, positioned on the opposite wall of chamber. Outer wall of additional chamber is made perforated and is positioned inclined to base.

EFFECT: higher efficiency, higher resistance to interference.

2 cl, 3 dwg

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RU 2 262 745 C2

Authors

Levchuk M.S.

Dates

2005-10-20—Published

2003-07-15—Filed