DRIVE ASSISTED EMERGENCY STOP
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United States of America Patent
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Issued Date -
Dec 15, 2016
app pub date -
Jun 10, 2016
filing date -
Jun 10, 2015
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Abstract
A method of stopping an elevator in the event of a power failure is provided. The method includes determining that a power source for a drive system of an elevator has failed, retaining energy electrically separate from the power source, managing the retained energy to enable drive-assisted emergency stopping of an elevator, and stopping an elevator using the managed, retained energy.
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