Invention Grant
- Patent Title: Elevator having free fall protection system
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Application No.: US17081421Application Date: 2020-10-27
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Publication No.: US11897728B2Publication Date: 2024-02-13
- Inventor: Ari Kattainen
- Applicant: KONE Corporation
- Applicant Address: FI Helsinki
- Assignee: KONE CORPORATION
- Current Assignee: KONE CORPORATION
- Current Assignee Address: FI Helsinki
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: EP 208023 2019.11.08
- Main IPC: B66B5/00
- IPC: B66B5/00 ; B66B5/04 ; B66B5/18 ; B66B11/00

Abstract:
An elevator includes a car, a counterweight, and a hoisting member connecting the car with the counterweight over a traction sheave. A free fall protection system includes a free fall protection controller, a free fall protection member connecting the car with the counterweight over the traction sheave or over a separate free fall sheave. The car and the counterweight are supported by the hoisting member in normal operation and by the free fall protection member only in a situation in which the hoisting member support fails. At least one free fall protection brake is arranged to stop the movement of the free fall protection member and thereby also the movement of the car and/or the counterweight, when being activated by the free fall protection controller.
Public/Granted literature
- US20210139277A1 ELEVATOR Public/Granted day:2021-05-13
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