Traversing hoists – Having horizontally swinging boom or bridge – And vertically swinging
Patent
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.
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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
Gremert Gote O.
Lundkvist Salomon E.
Aktiebolaget Hagglund & Soner
Blix Trygve M.
Johnson R. B.
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