Acceleration change sensor

Details Acceleration change sensor Acceleration change sensor

1974-04-11

1976-06-29

Hohauser, Herman

Electrical transmission or interconnection systems

Switching systems

Condition responsive

250231R, 340 52H, B60Q 100

Patent

active

039671356

ABSTRACT:
A device is provided for indicating the occurrence of rate of change of velocity of a body equal to or in excess of a predetermined value. An inertial mass is yieldably biased toward a reference position, but moves to a second position when the body is subjected to rates of change of velocity in excess of the predetermined value. A light source is provided, and when the inertial mass is in its reference position, a first light responsive means is out of light communication with the source, while a second light responsive means receives light from the light source. When the inertial mass is in its second position, the first light responsive means receives light from the light source and the second light responsive means is out of light communication with the source. Upon receipt of light, the first light responsive means produces an electric signal, but the second light responsive means no longer produces a signal. In response thereto, the signal sensor logic circuit then provides a signal to actuate an indicating circuit or the firing circuit of a device such as a vehicle occupant restraint system.

REFERENCES:
patent: 3591841 (1971-07-01), Heitmann et al.
patent: 3813556 (1974-05-01), Beer et al.

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