US PATENT SUBCLASS 414 / 543
.~.~.~.~.~ Having boom pivotable about a vertical axis

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

467  DF  SELF-LOADING OR UNLOADING VEHICLES {8}
539  DF  .~ Loading or unloading by other carrier or mover means, and the load movement thereof {3}
540  DF  .~.~ Raising or lowering of load or load holder includes vertical, rectilinear movement {2}
541  DF  .~.~.~ And carrier or mover includes means enabling additional movement having horizontal component {2}
542  DF  .~.~.~.~ Hoist having traversing (i.e., horizontal) movement {1}
543.~.~.~.~.~ Having boom pivotable about a vertical axis

DEFINITION

Classification: 414/543

Having boom pivotable about a vertical axis:

(under subclass 542) Apparatus wherein the device comprises or includes a laterally extending, cable-carrying member, which member is rotatable about a vertical axis.