Method and apparatus for storing fluid under pressure

Details Method and apparatus for storing fluid under pressure Method and apparatus for storing fluid under pressure

1996-04-22

1998-02-03

Johnson, Brian L

Land vehicles

Wheeled

Attachment

280735, B60R 2128

Patent

active

057135975

ABSTRACT:
Inflation fluid (18) for an inflatable vehicle occupant protection device, such as an air bag (12), is contained in a pressure vessel (30) at an elevated storage pressure. The pressure vessel (30) further contains ignitable material (18) which, when ignited, heats the inflation fluid (18). An ohmic heating element (92) is maintained in an ignitable heat transferring relationship with the ignitable material (18) under the influence of the storage pressure. When the vehicle experiences a predetermined collision-indicating condition, an actuating level of electric current is directed through the heating element (92) to ignite the ignitable material (18). The storage pressure is monitored by monitoring an electrical characteristic, such as the resistance, of the heating element (92) which has a predetermined relationship to the storage pressure.

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Rosenthal et al., National Aeronautics and Space Administration, Technical Report 32-1494, Nondestructive Testing of Insensitive Electroexplosive Devices by Transient Techniques, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, 1970.

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