STAIR ELEVATOR Russian patent published in 2012 - IPC B66B9/08 

FIELD: transport.

SUBSTANCE: stair elevator relates to load carrying device and may be used for advancing disabled persons over stair flights. It comprises top and bottom tubular guides, carriage with drive and support rollers, motor and worm reduction gear. Said drive and support rollers interact with guides. Drive rollers are located below guide axles at worm reduction gear output shafts. Support rollers are arranged above guide axles on levers fitted in bearings. Said spring-loaded levers are fitted on worm reduction gear output shafts to turn thereon. Said spring-loaded levers are inclined in opposite directions to vertical plane extending through axes of tubular guides. Worm reduction gear consists of separate units.

EFFECT: higher reliability, simplified design.

3 dwg