Inflator having a pressure monitoring initiator

Details Inflator having a pressure monitoring initiator Inflator having a pressure monitoring initiator

1998-04-20

1999-12-28

Mai, Lanna

Land vehicles

Wheeled

Attachment

280741, B60R 2126, B60R 2128

Patent

active

06007096&

ABSTRACT:
An apparatus (10) for inflating an inflatable vehicle occupant protection device, such as an air bag, includes a housing (20) defining a chamber (22), inflation fluid at a predetermined pressure in the chamber (22), and an initiator (34) for initiating the release of the inflation fluid from the chamber (22). The initiator (34) includes a capacitor (120, 240, 270), the capacitance of which changes with a change in pressure in the chamber (22). The apparatus (10) includes means, such as an electrical circuit (280), for sensing a change in the capacitance of the capacitor (286).

REFERENCES:
patent: 3771121 (1973-11-01), Lohr
patent: 3786843 (1974-01-01), Stephenson et al.
patent: 3869143 (1975-03-01), Merrel
patent: 3944769 (1976-03-01), Wagner
patent: 5099762 (1992-03-01), Drapala
patent: 5296659 (1994-03-01), Potts et al.
patent: 5487559 (1996-01-01), Headley
patent: 5918900 (1999-07-01), Ennis

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