PORTAL WINGS Russian patent published in 1995 - IPC

FIELD: stage lighting equipment. SUBSTANCE: device uses a platform with lighting fixtures. The platform is secured on a trolley mounted on monorails for platform movement along the stage wall. A lifting panel is positioned on the platform in guides. The trolley mounts a drum with pull rope connected through pulleys to the panel. The panel is furnished with spring-loaded wheels, having rubber tyres, installed on the panel for engagement with the stage plane-table, counterweight and at least two suspension strands connected through their pulleys to the counterweight and panel. The drum is provided with an additional pull rope connected through its pulleys to the counter- weight, it is made up of two parts installed on a common shaft by means of overrunning clutches for alternate actuation. EFFECT: improved design. 3 dwg