Multiple car hoistway including car separation control
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United States of America Patent
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May 7, 2013
Grant Date -
Aug 26, 2010
app pub date -
Sep 18, 2007
filing date -
Sep 18, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A separation distance is maintained between a leading elevator car (14) and a trailing elevator car (12) traveling in the same direction in an elevator hoistway (16). A shortest stopping distance (dssl) of the leading elevator car (14) and a normal stopping distance (dnst) of the trailing elevator car (12) are determined. The separation distance (dsep) is controlled such that a difference between the normal stopping distance (dnst) of the trailing elevator car (12) and the shortest stopping distance (dssl) of the leading elevator car (14) is greater than or equal to a threshold distance (dthresh).
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