A multiple circuit track lighting system comprises a track carrying electrical conductors and a connector mechanically engageable with the track for support and for supporting a lighting fixture. The connector is rotatable with respect to the track to effect an electrical connection between it and either...http://www.google.es/patents/US4822292?utm_source=gb-gplus-sharePatente US4822292 - Multiple line circuit track lighting system and fixture mounting adapters therefore
Multiple line circuit track lighting system and fixture mounting adapters ...
