US PATENT SUBCLASS 414 / 547
.~.~.~ Pivotable, telescopic arm imparts path of plural radii

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}
546  DF  .~.~ Raising or lowering of load or load holder includes curvilinear movement {8}
547.~.~.~ Pivotable, telescopic arm imparts path of plural radii

DEFINITION

Classification: 414/547

Pivotable, telescopic arm imparts path of plural radii:

(under subclass 546) Apparatus wherein the carrier or mover is an arm (e.g.,., a boom) which is swingable about a generally horizontal axis and which changes its length by collapsing or extending within itself as it raises or lowers a load or load holder, thus imparting thereto a path which has a plurality (or an infinite number) of radii.