LIFT Russian patent published in 1995 - IPC

FIELD: material handling; lifts and their control systems. SUBSTANCE: lift has sleeves 1 and 2, one fitted in the other, whose bottoms are pointed in opposite directions. Larger diameter sleeve 1 communicates with air distributing system 6 in its lower part, and smaller diameter sleeve 2 is embraced by torus 5. Working agent delivered by air distributing system 6 makes smaller diameter sleeve 2 move upwards, thus bleeding working agent, and then sleeve is returned in initial position. EFFECT: enlarged operating capabilities. 1 dwg