Intra-hoistway measurement system
US11913775B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2019 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Jul 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides an intra-hoistway measurement system automatically measuring dimensions within an elevator hoistway prior to elevator installation to reduce labor of workers. An intra-hoistway measurement system according to the present invention includes: a reference laser device that is mounted to a structure on a ceiling or in an upper portion of the hoistway for an elevator and emits a laser beam toward a lowermost part; a mobile measuring device that has a plane measuring device to measure horizontal dimensions within the hoistway; and a moving device that is mounted to the structure on the ceiling or in the upper portion of the hoistway and moves the mobile measuring device up and down. The mobile measuring device has a reference laser detection device that detects the laser beam emitted from the reference laser device, and an attitude detection device that detects its own attitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.