• Patent Title: Elevator with a monitoring arrangement for monitoring an integrity of suspension members with separated circuitries
  • Application No.: US16611534
    Application Date: 2018-06-01
  • Publication No.: US11623844B2
    Publication Date: 2023-04-11
  • Inventor: Philippe HenneauKurt Heinz
  • Applicant: Inventio AG
  • Applicant Address: CH Hergiswil
  • Assignee: Inventio AG
  • Current Assignee: Inventio AG
  • Current Assignee Address: CH Hergiswil
  • Agency: Shumaker, Loop & Kendrick, LLP
  • Agent William J. Clemens
  • Priority: EP17177132 20170621
  • International Application: PCT/EP2018/064402 WO 20180601
  • International Announcement: WO2018/234008 WO 20181227
  • Main IPC: B66B7/12
  • IPC: B66B7/12 B66B5/00
Elevator with a monitoring arrangement for monitoring an integrity of suspension members with separated circuitries
Abstract:
An elevator suspension member arrangement includes a monitoring arrangement monitoring an integrity status of suspension members having electrically conductive cords. The monitoring arrangement includes: a generator generating phase shifted first and second alternating voltages; input and output connectors each establishing electrical contacts to cords in one of the suspension members; a voltage analyzer measuring and analyzing a neutral point voltage resulting from applying the first and second alternating voltages to first and second cords of the one suspension member; a supply circuitry having supply lines electrically interconnecting the generator with the input connectors; and a measurement circuitry including measurement lines electrically interconnecting the analyzer with at least one of the input connectors and the output connectors. The supply and measurement lines are separated from each other whereby disturbing influences of impedances through the supply circuitry is minimized due to voltage measurements being performed through the separate measurement circuitry.
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