US PATENT SUBCLASS 212 / 232
.~ And vertically swinging

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

223  DF  HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE {9}
232.~ And vertically swinging {6}
233  DF  .~.~> Plural booms
234  DF  .~.~> With adjacent load-supporting rack
235  DF  .~.~> Including means for sluing boom as it is swung vertically
236  DF  .~.~> Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging
237  DF  .~.~> Including means to swing boom vertically {2}
242  DF  .~.~> Having specific engager for load {1}

DEFINITION

Classification: 212/232

And vertically swinging:

(under subclass 223) Apparatus wherein the boom* is also capable of pivotal movement about a horizontal axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

225+, for apparatus having a boom claimed as being swingable about a horizontal axis only.

310, for a ship mounted horizontally and vertically swinging boom.

SEE OR SEARCH CLASS

254, Implements or Apparatus for Applying Pushing or Pulling Force,

120+, for a load-lifting lever. 414, Material or Article Handling,

687+, for a shovel or fork type load handler having a boom swingable horizontally and vertically.