Land vehicles – Wheeled – Attachment
Patent
1988-01-25
1990-04-10
Rice, Kenneth R.
Land vehicles
Wheeled
Attachment
280728, B60R 2132
Patent
active
049154117
ABSTRACT:
A crash sensor for automobiles of the type including a ball moving against viscous damping in a closed cylinder for releasing a firing pin for initiating a pyrotechnic sequence has an improved release mechanism. When the ball moves a predetermined distance from its normal or resting position during an automobile crash a release mechanism releases a belleville spring maintained under stress. The belleville spring thereupon initiates movement of a firing pin towards a stab primer. The release mechanism is a single piece of spring material having multiple levers extending radially inward from a torsionally elastic ring, each lever having a detent and a pivot. The firing pin is mounted on and driven by a snap disk which is normally in its position of higher energy equilibrium and is released to go to its position of lower energy equilibrium by pressure applied by the belleville spring.
REFERENCES:
patent: 3964394 (1976-06-01), Wolf
patent: 4161228 (1979-07-01), Svensson et al.
patent: 4573706 (1986-03-01), Breed
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