Hoisting apparatus with improved anti-sway system

Details Hoisting apparatus with improved anti-sway system Hoisting apparatus with improved anti-sway system

1978-03-20

1979-01-23

Oresky, Lawrence J.

Traversing hoists

Overhead

Cable

188 653, B66C 502

Patent

active

041356284

ABSTRACT:
A movable hoisting apparatus having a pair of spaced apart legs with each leg having two substantially vertical columns, beams extending between the forward columns and the rear columns of each leg, a trolley movable along each of the beams, a lifting frame, sheaves mounted on the lifting frame and trolley sheaves mounted on the trolley, a power drum, a cable extending from the power drum in opposite directions, over the trolley sheaves, downward and around the lifting frame sheaves, upward over the trolley sheaves and forming a crossover portion of the cable between the trolley sheaves and variable brake means retarding the movement of the crossover cable portion to reduce swaying motion of the lifting frame and its load without interfering with the raising and lowering of the lifting frame and load.

REFERENCES:
patent: 3532324 (1970-10-01), Crittenden
patent: 3746182 (1973-07-01), Tax et al.
patent: 3837503 (1974-09-01), Komatsu
patent: 3899083 (1975-08-01), Flessner et al.
patent: 4010948 (1977-03-01), Deluty

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