Leak detector for gas air bag inflator

Details Leak detector for gas air bag inflator Leak detector for gas air bag inflator

1993-12-13

1995-07-04

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73 2331, 73 2503, 180282, 280741, 2807281, G01N 2522, G01M 304

Patent

active

054289882

ABSTRACT:
The present invention relates to a detector for detecting leaks of a gas. The present invention is particularly applicable to a vehicle occupant restraint apparatus (10) which has a container (14) for an exothermically reactable gas mixture (18). An exothermic reaction of the gas mixture (18) released from container (14) deploys an occupant restraint (12). The detector has an electrically conductive sensor element (44). The sensor element (44) is positioned within an envelope (40) surrounding a portion of container (14) so as to be exposed to the gas mixture (18) if leaked from container (14). The sensor element (44) is part of an electric circuit (46). The electrical resistance of the sensor element (44) varies when the sensor element is exposed to the leaked gas mixture. The electric circuit (46) also has a power source (64) including a timing circuit (52) for providing an intermittent electric current through the sensor element (44). The timing circuit (52) has an off-period of relatively long duration. This allows the gas if leaked into the envelope (40) to accumulate in the area of the sensor element (44).

REFERENCES:
patent: 3352146 (1967-11-01), Lyssy
patent: 3413837 (1968-12-01), Bui-Al et al.
patent: 3959764 (1976-05-01), Allman
patent: 4164699 (1979-08-01), Timoshenko et al.
patent: 4241019 (1980-12-01), Nakatani et al.
patent: 4305724 (1981-12-01), Micko
patent: 4369647 (1983-01-01), Shigemori et al.
patent: 4580439 (1986-04-01), Manaka
patent: 4730478 (1988-03-01), Gedeon
patent: 4779078 (1988-10-01), Ciolli
patent: 4792433 (1988-12-01), Katsura et al.
patent: 4792433 (1988-12-01), Schuck et al.
patent: 4806314 (1989-02-01), Fertig et al.
patent: 4817414 (1989-04-01), Hagen et al.
patent: 4854155 (1989-08-01), Poli
patent: 4911892 (1990-03-01), Grace et al.
patent: 5218347 (1993-06-01), Deppe

Affiliated with

Also associated with

Rating

Leak detector for gas air bag inflator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Leak detector for gas air bag inflator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leak detector for gas air bag inflator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-753439