| 摘要 |
A crash sensor responsive to a predetermined change in velocity for activating a vehicular safety device. The present sensor has a gas-filled sealed tube having an inertial mass disposed therein in a closely fitting manner forming an annular orifice between the mass and the tube. The mass is preloaded and biased and, upon the tube experiencing a level of velocity change above a predetermined amount, movement of the mass in the tube to activate the set of electrical contacts is damped by viscous laminar flow of the gas through the annular orifice.
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