Twin-type slewing crane

Details Twin-type slewing crane Twin-type slewing crane

1981-07-09

1983-08-02

Blix, Trygve M.

Traversing hoists

Having horizontally swinging boom or bridge

And vertically swinging

308174, B66C 2306

Patent

active

043961274

ABSTRACT:
Two mechanically identical cranes whose luffing jibs have the same maximum and minimum out-reach and which have their own slewing machinery, are mounted via respective supporting structures on a common foundation, at the same level for rotation about the same axis by bearings and an axle which provide a compact journalling of the supporting structures upon the foundation.

REFERENCES:
patent: 677281 (1901-06-01), Seagrave et al.
patent: 1207423 (1916-12-01), Lundin
patent: 1244153 (1917-10-01), Wickwire
patent: 1910028 (1933-05-01), McElroy et al.
patent: 2414573 (1947-01-01), Wagner et al.
patent: 3302986 (1967-02-01), Grolman et al.
patent: 3391810 (1968-07-01), Le Tourneau
patent: 4023868 (1977-05-01), Miki
patent: 4197953 (1980-04-01), Frick

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