Chemical oxygen generator

US4822572A · kind A · utility

Assignee

• Draegerwerk Aktiengesellschaft · DE

Inventors

• Carl-Ernst van der Smissen · Lübeck, DE
• Rainer Ernst · Curau, DE
• Wolfgang Eckstein · Sereetz, DE

Key dates

• Filing date: Jun 7, 1985
• Grant date: Apr 18, 1989
• Expiry date: Jun 7, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B13/0296
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A chemical oxygen generator for use in respirators and resuscitators for providing an oxygen reserve includes oxygen in chemically bound compacts or oxygen single-candles and the oxygen is released when needed in the course of a chemical reaction. The oxygen single candles are fitted together axially in a canister in modular construction with incandescence elements therebetween. In the cover of the canister, opposite the upper end wall of the first single candle, there is an igniting device, and in the bottom, an outlet opening for the escape of the released oxygen. As soon as the first oxygen single-candle is activated by means of the igniting device, the oxygen reaction sets in and a reaction front moves in the direction of the next single candle. The reaction transmission to the next single candle occurs through the intermediate incandescence element. By their broad abutment on the single candles to be connected by them, and by their material consistency, the incandescence elements provide shockproofness necessary for the burnoff of the single candle.