Patent ID: 6464190
Filing Date: 2002-10-15
Classification: F21V

Abstract:
A self-winding-type fixture-lifting/lowering device that is movable upwards and downwards, that is used for installing light fixtures and similar devices at an elevated position, and that comprises:a secure block securely fixed at said elevated position; a lifting/lowering block that hangs from said secure block by a pair of wire cables in such a manner as to be movable upwards and downwards and so as to support said light fixture or similar device; with said lifting/lowering block carrying a pair of winding drums for winding and unwinding, respectively, said wire cables, an electric motor for driving said winding drums in synchronization with each other, and a battery for supplying electric power to said electric motor; with each of said wire cables being secured to said lifting/lowering block at one end and connected to said winding drums and arranged so as to pass through a path formed on a first pulley fixed to said secure block, a second pulley disposed apart from said first pulley and fixed to said secure block, and a third pulley fixed to the lifting/lowering block; a lock mechanism for locking said lifting/lowering block against said secure block; and a release mechanism for releasing said lock mechanism when said lifting/lowering block is to be moved downwards.