US PATENT SUBCLASS 212 / 233
.~.~ Plural booms

Current as of: June, 1999
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212 /   HD   TRAVERSING HOISTS

223  DF  HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE {9}
232  DF  .~ And vertically swinging {6}
233.~.~ Plural booms

DEFINITION

Classification: 212/233

Plural booms:

(under subclass 232) Apparatus including second boom* mounted for movement about vertical and horizontal axes and having its own load engager or flexible member suspended therefrom.

(1) Note. Flexible members of the first and second booms may support a common load or load handler.

SEE OR SEARCH THIS CLASS, SUBCLASS:

311, for plural, ship-mounted horizontally and vertically swinging, cable-actuated booms.