Elevator and a method of maintaining an elevator
US12172869B2 · kind B2 · utility
0Cited by
0References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2023 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Aug 4, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to an elevator, comprising a hoistway with a plurality of hoistway sections attached to each other to provide a hoistway with a hoistway space, an elevator car arranged in the hoistway space to be vertically movable in the hoistway space between door openings at landings of a building, and doors at the door openings. In order to avoid problems caused by a mutual change of height of a hoistway and a building, a sensor provides to a control system a signal indicating a level difference between a first reference point of the hoistway and a second reference point of the building.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.