Emergency lighting in elevator cars with phosphorescent materials
US6523648B2 · kind B2 · utility
3Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2000 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Feb 23, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/0233
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The interior of an elevator car is equipped with phosphorescent components which serve as emergency lighting in the case of power failure, and for facilitating activation of the alarm it contains relevant operating elements which have phosphorescent coatings or are made of materials with phosphorescent additives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.