Sensor for use with air bag inflator and method for making

Details Sensor for use with air bag inflator and method for making Sensor for use with air bag inflator and method for making

1994-10-17

1996-04-02

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

73723, 200 83A, 280736, 340605, H01H 3534

Patent

active

055042880

ABSTRACT:
A pressure responsive sensor 10 for use with a vehicular air bag inflation system is shown having an electric switch 24 actuatable by a snap acting disc 40 when the gas pressure in the gas storage bottle 48 decreases to a selected low level. The snap acting disc 40 is exposed on one side to the gas mixture P1 in bottle 48 and the opposite side to a reference gas mixture P2 in a reference chamber 34. The gas mixture P2 in the reference chamber is filled to a lower pressure level than that in the bottle in order to provide switch actuation at the desired level and comprises a mixture of gases to enhance leakage testing and tracking of the pressure vs. temperature characteristic curve of the bottle gas mixture.

REFERENCES:
patent: 3756621 (1973-09-01), Lewis
patent: 3944769 (1976-03-01), Wagner
patent: 4049935 (1977-09-01), Gruber
patent: 4981534 (1991-01-01), Scheffe
patent: 5225643 (1993-07-01), Marchant
patent: 5331126 (1994-07-01), Dwyer et al.
patent: 5356176 (1994-10-01), Wells

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