B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
B66C3/12—Grabs actuated by two or more ropes
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
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Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles
(AREA)
Procede d'aide a la decompression de l'atmosphere d'un habitacle d'engin et habitacle d'engin apte a permettre la mise en œuvre dudit procede