Portal barrier movement alarm
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United States of America Patent
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Jul 14, 2009
Grant Date -
Mar 20, 2008
app pub date -
Sep 20, 2006
filing date -
Sep 20, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A portal barrier movement alarm includes an apparatus having (a) a first assembly adapted for attachment to the moveable portal barrier; (b) a second assembly adapted for attachment spaced apart from but proximate to the moveable portal barrier; (c) and a vibration inducing ridge and a vibratable prong, the vibratable prong having a vibratable free end, one of the vibration inducing ridge and the vibratable prong being attached to the first assembly and the other of the vibration inducing ridge and the vibratable prong being attached to the second assembly such that the movement of the first assembly with respect to the second assembly causes the vibratable prong to contact the vibration inducing ridge and to thereby cause the vibratable prong to vibrate.
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