Shock detecting system
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United States of America Patent
Stats
-
Aug 8, 1995
Grant Date -
N/A
app pub date -
Jan 7, 1994
filing date -
Jan 8, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shock sensor including a switch turned on by magnetic force. The switch includes a reed switch, a magnet sliding back and forth along a case for the reed switch, and a coil spring biasing the magnet in a particular direction. When the sensor receives a shock, the biased magnet moves along the switch case, the magnetic force applied to the reed switch increases and when this magnetic force exceeds a predetermined amount, contact portions of the reed switch are closed and the switch is in the on state. Further, a weight forming an integral part of the magnet is used to increase the kinetic energy of the magnet or, between the coil spring and the switch case, there is a slack which enables movement of the coil spring in the direction of its diameter, either structure allowing the magnet to stay in the on state longer than a conventional switch.
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Cited Art Landscape
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