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1.发明申请公开(公告)号：US20200223667A1
公开(公告)日：2020-07-16
申请号：US16832568
申请日：2020-03-27
Applicant: KONE Corporation
Inventor： Ari KATTAINEN , Petteri VALJUS , Erkka KIVIAHO , Andrew JAHN
Abstract: The invention relates to a method for defining a condition of an elevator car suspension means. The method includes detecting a rate of change of elongation of the elevator car suspension means in order to define the condition of the elevator car suspension means. The invention relates also to an elevator safety control unit and an elevator system performing at least partly the method.
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