Gas generator for inflating an inflatable article

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

1989-12-13

1991-04-02

Bertsch, Richard A.

Ammunition and explosives

Jacketed or cartridge gas generator

For gas-powered tools or means

137 79, 251 11, 441 41, 236 93R, 280742, B60R 2126

Patent

active

050038877

ABSTRACT:
A gas generator for inflating an inflatable article such as a safety bag or raft, has a reaction chamber (1) surrounded 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 substantially 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 average path length is increased while the area and/or path length is decreased in response to a decreasing temperature.

REFERENCES:
patent: 2244808 (1941-06-01), Scott et al.
patent: 3324656 (1967-06-01), Bradshaw, Jr.
patent: 3767228 (1973-10-01), Lewis
patent: 3773352 (1973-11-01), Radke
patent: 3897962 (1975-08-01), Sack
patent: 4026580 (1977-05-01), Wulf et al.
patent: 4380346 (1983-04-01), Davis et al.
patent: 4726452 (1988-02-01), Ty et al.

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