Hermetically sealed damped sensor

Details Hermetically sealed damped sensor Hermetically sealed damped sensor

G - Physics

01

P

26/112, 26/201,

G01P 15/135 (2006.01) H01H 35/14 (2006.01)

Patent

CA 2030925

ABSTRACT OF THE DISCLOSURE A hermetically sealed sensor for initiating air bag inflation during automobile crashes includes a ball which undergoes a fluid pressure differential during a crash and thereupon moves to impinge upon and, if the crash is of sufficient severity and duration, to close a pair of contacts and thus cause air bag inflation. The hermetic sealing leaves the operating characteristics of the sensor unchanged despite changes in ambient atmospheric pressure. The air pressure within the sensor can be established so as to give a desirable operating characteristic. Also other gases such as helium can be used exclusively or mixed with air to achieve a desirable operating characteristic.

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