Method and apparatus for centering a luminaire support

摘要: A method and apparatus for maintaining a ring-like support in predetermined location are disclosed herein. Both the especially suitable luminaire centered about post as is moved up or down latter. This accomplished by providing plurality of arrangements which apply forces to it position. These force imparting interconnected one another such that off-center movement causes more act restoring latter its original position while, at this time, remaining automatically temporarily removed so not interfere with recentering function acting arrangements.