Photoluminescent emergency egress accessory
US5904017A · kind A · utility
45Cited by
17References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1996 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | May 17, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24777
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A photoluminescent safety accessory for attachment to walls, floors, stairs, handrails, ceilings or the like located along emergency egress routes. The accessory is comprised of a nonluminescent material and a photoluminescent material integrally formed with and molecularly bonded to the nonluminescent material, the luminous material becoming illuminated upon the extinguishing of the ambient light. A coextrusion system for integrally extruding the photoluminescent safety accessory is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.