Overhead crane having bridge mounted for differential movement

Details Overhead crane having bridge mounted for differential movement Overhead crane having bridge mounted for differential movement

1986-04-21

1987-04-14

Peters, Jr., Joseph F.

Traversing hoists

Having horizontally swinging boom or bridge

Having fluid ram directly actuating load cable or sheave...

212220, B66C 1900

Patent

active

046571507

ABSTRACT:
A trolley having an overhead movable bridge supporting a grappler device to lift and lower cargo containers. The bridge is movable along parallel tracks on a trolley. The bridge is capable of undergoing limited differential rotational motion with respect to the trolley and parallel tracks. The rotational mounting of the bridge permits the trolley wheels to maintain proper alignment with the beams while the grappler handles containers lying at an angle to the longitudinal axis of the crane.

REFERENCES:
patent: 3061110 (1962-10-01), Montgomery
patent: 3262580 (1966-07-01), Markowitz
patent: 3645406 (1972-02-01), Brazell
patent: 3945504 (1976-03-01), Wright

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