LUMINAIRE SUSPENSION DEVICE Russian patent published in 1994 - IPC

FIELD: lighting engineering. SUBSTANCE: device has horizontal guide 1, main and additional block-and-tackle systems 2 and 7 respectively mounted on it, a drive and luminaire fixing units, the systems have luminaires 3 and loads 4. The drive is made in the form of drums 8 freely located on shaft 5 and connected to systems 2, 7 through their loads 4 by flexible links 9. Shaft 5 is mounted on bearings for axial movement and independent engagement with drums 8. The luminaire fixing and suspension height control unit is made in the form of stationary pin 13 and rings 14 engageable with it and forming a shank of loads 4. When the shank is disengaged the luminaire is lowered. The luminaire is raised by a handle. EFFECT: improved structure. 3 dwg