ROLLING GATE Russian patent published in 1995 - IPC

FIELD: gates for garages, hangars and storage rooms. SUBSTANCE: rolling gate has base with guides, reversing drive and rolling frame. Rolling frame has guides and rests on base guides through rollers. Reversing drive is installed on base. Installed on base guide for motion is roller connected with drive and consisting of two halves connected with axle through one or more bearings. Axle of rollers connected with drive carries two radially installed sprockets different is size. Located on guide are by-pass blocks, axle of one block is connected with drive. Rigidly attached to axles of by-pass blocks are two sprockets different in size on each axle. Upper roller may be displaced relative to lower roller to side from center of gravity of rolling frame. In the open position of gate, lower roller is displaced to the side from center of gravity of rolling frame in direction of upper roller. EFFECT: higher efficiency. 4 cl, 5 dwg