Patent ID: 6874919
Filing Date: 2005-04-05
Classification: A62B,B64D,F21K,G08B,G09F

Abstract:
1. A method of manufacturing a photoluminescent track for an emergency lighting system comprising a plurality of photoluminescent track sections arranged end to end wherein each track section is a sealed unit formed by: providing an elongate hollow outer member of unitary box-section having first and second major wall portions and opposed side wall portions, said first and second major wall portions extending between and integral with said side wall portions to define a longitudinally extending slot having a length, a width, an open first end and a second end; providing an elongate inner member having photoluminescent material on at least one side and push-fitting said inner member in said outer member from said open first end of said slot wherein said elongate inner member is substantially the same length and same width as said slot and extends from said open first end to said second end of said slot and between said opposed side wall portions with one of said first and second major wall portions overlying said at least one side of said inner member and being made of a material to transmit light; and providing a closure member having a flat panel for said open first end and attaching said closure member to an end face of said outer member around said open first end of said slot to close and seal said slot with said inner member within said slot.