B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
B66C1/30—Duplicate, e.g. pivoted, members engaging the loads from two sides and also arranged to grip the sides of the loads
B66C1/32—Duplicate, e.g. pivoted, members engaging the loads from two sides and also arranged to grip the sides of the loads of piled or stacked articles
Una seccion hueca,de peso liviano y elevada fortaleza,para aguilones o plumas de grua telescopicas de secciones multiples y un aguilon o pluma de grua telescopica que incorpora dicha seccion hueca