STAIRCASE ELEVATOR (VARIANTS) Russian patent published in 2008 - IPC B66B9/08 

FIELD: hoisting equipment.

SUBSTANCE: elevator comprises upper running rail, lower running rail and slide moving along the rails. Four driving rollers connected to drive are installed on the slide. In some embodiments each driving roller has independent driving unit made as geared engine. The geared engine has self-braking reduction gear. Driving roller is connected to output reduction gear shaft. In the first embodiment slide has frame with fixed carrying member and movable carrying member connected thereto. Each of fixed and movable carrying members has two driving rollers with geared engines. Movable carrying member may rotate about axis transversal to movement direction and is arranged so that space between movable carrying member and fixed one may be changed. The movable carrying member is urged towards running rail with resiliently compressed strut. In the second embodiment driving rollers are arranged from opposite sides of load-bearing plates. Reduction gears are made as bevel gears, wherein each drive of geared engine of each load-bearing panel is near reduction gear of another geared engine.

EFFECT: simplified structure and increased reliability.

7 cl, 11 dwg