Method and passenger conveyor
US10974932B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2020 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Apr 1, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B29/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for controlling a passenger conveyor, which passenger conveyor includes an endless band of conveying elements, the endless band including an inclined conveying section; a drive shaft arranged to drive the endless band of conveying elements when rotated; a motor for rotating the drive shaft; a first sensing arrangement for sensing a rotation speed of the motor; a brake activatable to act directly on the drive shaft or an element fixedly connected to it for stopping rotation of the drive shaft; and a control system. The method includes rotating the drive shaft with the motor; and sensing rotation speed of the motor with the first sensing arrangement. The passenger conveyor includes a second sensing arrangement for sensing rotation speed of the drive shaft, and the method includes sensing rotation speed of the drive shaft with the second sensing arrangement; detecting deviation between the rotation speed of the motor and the rotation speed of the drive shaft or a multifold thereof; and activating the brake for stopping rotation of the drive shaft if deviation, in particular deviation meeting predefined criteria, is detected between the rotation speed of the motor and the rota…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.