Patent ID: 6550081
Filing Date: 2003-04-22
Classification: A47C

Abstract:
A lift bed comprising:a vertically adjustable bed frame; a pulling device for moving said bed frame in the vertical direction; two carriages secured to an end face of the bed frame horizontally spaced from one another; and each of said carriages is supported to be movable on a vertical guide rail by means of rollers, wherein the two carriages are each connected via a pull chain or a toothed belt to a counterweight; each pull chain or each toothed belt is guided over a drive wheel at the upper end of the respective guide rail; the drive wheels are rigidly coupled via a coupler rod; the coupler rod is connected to a main reel arranged in vertically spaced relationship with a counterreel; the main reel and the counterreel are interconnected by a drive belt, said drive belt being used for rotatably driving the coupler rod; and the counterreel is adapted to be driven selectively in one direction or the other by means of a motor coupled to a reduction gearing and used for rotating the coupler rod.