LIFTER Russian patent published in 1994 - IPC

FIELD: load lifting. SUBSTANCE: lifter has trolley 1. Fitted in housing 3 in bearings 4 and 5 are two two-support load screws 6 of lifting mechanism of load-lifting disk 14. Load screws are arranged vertically in parallel and rotate in synchronism. Two nuts 8 of screws 6 are secured in lower cross-member 7. Fitted in middle of cross-member is rod 9 with upper cross-member connected to its upper end. Lifting mechanism has also folding rod supports, upper supports being coupled with upper cross-member. EFFECT: enlarged operating capabilities. 4 cl, 8 dwg