Traversing hoists – Having vertically swinging boom – Having means to swing boom vertically
Patent
1984-10-30
1986-06-03
Blix, Trygve M.
Traversing hoists
Having vertically swinging boom
Having means to swing boom vertically
52121, B66C 2304
Patent
active
045924740
ABSTRACT:
A coupling and latching mechanism for a multi-section extensible boom that includes a manual section and is operable from a remote location such as the cab of a crane. The mechanism includes pairs of spaced jaw type couplings secured to adjacent boom sections and adapted to be selectively coupled to the piston rod or the like of an extensible ram for operating the boom either with the manual section extended or retracted. Remotely controlled latch locking blocks are provided to latch the manual section in a plurality of extended positons, or in a retracted position.
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Avila Stephen P.
Blix Trygve M.
FMC Corporation
Kamp R. C.
Megley R. B.
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