Integrating impact switch
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United States of America Patent
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Aug 13, 2013
Grant Date -
Aug 23, 2012
app pub date -
Feb 23, 2011
filing date -
Feb 23, 2011
priority date (Note) -
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Abstract
An integrating impact switch that can discriminate between accelerations due to different stimuli is provided. Embodiments of the present invention actuate only in response to an acceleration whose magnitude is equal to or greater than an acceleration threshold for a predetermined continuous period of time. Embodiments of the present invention comprise an impact switch having a throw that is operatively coupled with a viscous damper that dampens motion of the throw. As a result, a stimulus that imparts an acceleration that meets or exceeds an acceleration threshold for a time period less than a predetermined time-period threshold does not actuate the switch. A stimulus that imparts an acceleration whose magnitude is equal to or greater than the acceleration threshold for a time period equal to the time-period threshold, however, does actuate the switch.
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