DISPOSITIF DE POSITIONNEMENT ANGULAIRE D'UNE MASSE PAR RAPPORT A UN AXE HORIZONTAL DE SUPPORT ET APPAREIL D'ECLAIRAGE EQUIPE D'UN TEL DISPOSITIF

摘要

The positioning device supports the overhead lamps on an arm with a horizontal pivot. Their weight is balanced by a spring assembly acting on a pivot (M) offset from the horizontal support pivot. The spring assembly (24) is mounted so it can oscillate about a transverse axis (O2) near the centre of the length of the spring assembly, and parallel to the horizontal pivot axis (O1). The spring assembly (24) is formed by a rod (22) enclosed by a coil spring (34), which is partly enclosed in a sleeve (36). The balance can be adjusted with a nut (32) at the end of the rod (22) enclosed by the spring.