(under the class definition) Subcombination comprising an elongated structural member disclosed as being part of a traversing hoist and which serves to either support the load, a boom*, or boom rigging.
(1) Note. To be proper for original placement in Class 212, a claim to a boom or mast as defined above must include structural limitations peculiar to a traversing hoist. (See search note to Class 52 in main definition.)
SEE OR SEARCH THIS CLASS, SUBCLASS:
177, for a boom having means to facilitate assembly or disassembly of plural longitudinal segments of the boom to one another.