05499170 is referenced by 103 patents and cites 3 patents.

A lighting track for use in public transportation vehicles comprises an outer track having upstanding walls connected together by a base portion, together defining a first retention channel. The upstanding walls have a downwardly facing first barrier portion. A receptacle has first and second side walls connected together by a spanning portion, together defining an second retention channel. The side walls have an upwardly facing second barrier portion, and a downwardly facing third barrier portion. When the receptacle is in place in the first retention channel, the first and second side walls are each selectively movable between a respective locking position where the second barrier portion is in intimate engagement with the first barrier portion and a respective unlocking position where the second barrier portion is removed from intimate engagement with the first barrier portion. A top cover has first and second side walls connected together by a lens. The side walls have an upwardly facing fourth barrier portion. A lighting element is disposed between the receptacle and the top cover. When the protective top cover is in place in the second retention channel of the receptacle and the receptacle is in place in the first retention channel of the outer track, the first and second barrier portions intimately engage each other in interfering relation, and the third and fourth barrier portions intimately engage each other in interfering relation, so as to lock the receptacle within the outer track and to lock the protective top cover within the receptacle.

Title
Lighting system
Application Number
8/325117
Publication Number
5499170
Application Date
October 18, 1994
Publication Date
March 12, 1996
Inventor
Bertrand Gagne
9560 Rue Ceres #301, Pierrefonds, Quebec
CA
Agent
Donald E Hewson
IPC
F21V 9/16
View Original Source