Automatic door with position-dependent force limiting
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United States of America Patent
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May 20, 2014
Grant Date -
Mar 10, 2011
app pub date -
Sep 4, 2009
filing date -
Sep 4, 2009
priority date (Note) -
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Abstract
A method of controlling the motion of a moveable door includes determining the direction that the door is moving with respect to its anticipated closed position, and based on the direction, regulating an amount of force that is available to the door for its motion. The method may further include monitoring the position of the door as it is moving, and adjusting the motion of the door and regulating the amount of force available to the door for its motion, based on the calculated difference between the door's position as detected during monitoring and its expected position.
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