Gas generator for inflating an inflatable article

Details Gas generator for inflating an inflatable article Gas generator for inflating an inflatable article

B - Operations, Transporting

01

J

280/226

B01J 7/00 (2006.01) F42B 3/04 (2006.01) B60R 21/26 (2006.01)

Patent

CA 2005635

TITLE OF THE INVENTION GAS GENERATOR FOR INFLATING AN INFLATABLE ARTICLE ABSTRACT OF THE DISCLOSURE A gas generator for inflating an inflatable article such as a safety bag or raft, has a reaction chamber (1) sur- rounded by a ring-shaped filter chamber (2). First gas exit openings (10 to 15) permit generated gas to flow from the reaction chamber into the filter chamber. Second gas exit openings (22) lead from the filter chamber into the inflatable article. A temperature responsive flow control is provided to make sure that the inflation efficiency or the inflation pressure inside the inflated article is sub- stantially constant and substantially independent of the temperature of the gas generator at which the ignition of a gas generating fuel begins. For this purpose the total cross-sectional flow area of the first gas exit openings and/or the average gas flow path length between the first and second gas exit openings is controlled so that with a rising temperature the flow cross-sectional area and/or aver- age path length is increased while the area and/or path length is decreased in response to a decreasing temperature. - 1 -

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