DEVICE FOR LIFTING CRADLE Russian patent published in 1995 - IPC

FIELD: hoisting equipment. SUBSTANCE: device has a foundation representing a box-shaped construction equipped with four protrusions in pairs. A member connected to a hydraulic piston and carrying a hydraulic jack on its end is mounted on the end of each protrusion. There is a toothed crown with inner teeth inside the base. The inner teeth are in constant engagement with the drive gear being an integral part with the shaft of the hydraulic motor. The arrow consists of sections, the upper part of which carries a rotary cradle. EFFECT: enhanced efficiency. 4 cl, 40 dwg