DOOR POSITION SENSOR FOR AN ELECTROMAGNETIC DOOR LOCK
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United States of America Patent
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Issued Date -
Oct 19, 2017
app pub date -
Apr 13, 2017
filing date -
Apr 14, 2016
priority date (Note) -
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Abstract
A door position sensor of an electromagnetic door lock. The electromagnetic lock also includes an electromagnet and a strike plate. The electromagnet is secured to the door frame and the strike plate is movably mounted to the door so that a controlled amount of door movement in the opening direction is permitted while the strike plate remains in contact with an energized electromagnet. The door position sensor may comprise a sensor in or on the electromagnet and a permanent magnet mounted to the door and disposed in proximity to the sensor when the door is in a closed position. The sensor may be a reed switch or a Hall Effect sensor. The permanent magnet and strike plate may be mounted to the door by a mounting tray. The mounting tray may include indicia to aid in providing a proper alignment of the strike plate to the door and electromagnet.
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