A LED luminaire track lighting system includes an elongate track, having a number of longitudinal guideways, for attachment to a support surface, as well as a number of current conductors arranged within at least some of the guideways. The first of these conductors are power conductors and the second...http://www.google.com/patents/US20050169015?utm_source=gb-gplus-sharePatent US20050169015 - LED color changing luminaire and track light system
