Elevator safety systems including detection of an object in the hoistway
US8061486B2 · kind B2 · utility
8Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2004 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Feb 19, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/005
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system has a hoistway (4) and an elevator car (2) arranged to travel vertically within the hoistway, the hoistway is provided with a sensing arrangement such as an infrared curtain (10, 12) for detecting the presence of a person on top of the car as the car approaches the top of the hoistway (8). The elevator system is arranged to limit further upward movement of the car in the event that a person is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.