• Patent Title: Elevator with a monitoring arrangement for monitoring an integrity of suspension members
  • Application No.: US16476569
    Application Date: 2017-06-21
  • Publication No.: US11945691B2
    Publication Date: 2024-04-02
  • Inventor: Vincent RobiberoPhilippe Henneau
  • 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: EP 166927 2017.04.18 EP 166943 2017.04.18
  • International Application: PCT/EP2017/065253 2017.06.21
  • International Announcement: WO2018/141422A 2018.08.09
  • Date entered country: 2019-07-09
  • Main IPC: B66B7/12
  • IPC: B66B7/12 B66B5/00 G01R31/08
Elevator with a monitoring arrangement for monitoring an integrity of suspension members
Abstract:
An elevator suspension member arrangement includes at least two suspension members having electrically conductive cords. A monitoring arrangement generates first and second alternating voltages phase shifted by 180° and includes a plurality of input connectors and output connectors electrically connected to the cords and a voltage analyzer arrangement analyzing a neutral point voltage resulting from applying the voltages to the cords. Each suspension member can have the cords connected in parallel between the input connector and the output connector or have two groups of the cords connected in series between the connectors with the groups connected to an interconnecting connector. A multiplexer arrangement can be used to selectively test each pair of suspension members when the suspension member arrangement includes more than two suspension members.
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