US PATENT SUBCLASS 212 / 299
.~ Collapsible or foldable boom


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



212 /   HD   TRAVERSING HOISTS

294  DF  ADJUSTABLE TO TRANSPORT OR NONUSE POSITION (E.G., COLLAPSIBLE) {4}
299.~ Collapsible or foldable boom {1}
300  DF  .~.~> Vertically swinging boom having pivoted sections


DEFINITION

Classification: 212/299

Collapsible or foldable boom:

(under subclass 294) Subject matter including a boom* and means by which either the orientation of the boom or dimension of the boom can be changed to render the device more easily transportable or storable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

230+, for horizontally swinging extensible booms.

264, for vertically swinging extensible booms.

348+, for extensible boom structure, per se.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

116+, for a tiltable elongated member or construction and means to tilt it about a base and subclass 646 for an open work truss, mast, or the like, having adjustably or collapsibly connected components.