US PATENT SUBCLASS 212 / 300
.~.~ Vertically swinging boom having pivoted sections

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

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

DEFINITION

Classification: 212/300

Vertically swinging boom having pivoted sections:

(under subclass 299) Subject matter wherein the boom* is pivoted to a support structure for movement about a horizontal axis, and wherein the boom comprises a plurality of sections hingedly connected in end-to-end fashion whereby a section may be swung to a position alongside another section for transport or storage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

237+, for a vertically and horizontally swinging boom having a jibboom or other extension which is pivoted relative to the main boom to manipulate the load.

260+, for a vertically swinging boom having a jibboom or other extension which is pivoted relative to the main boom to manipulate the load.

SEE OR SEARCH CLASS

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

117+, for a tiltable elongated member or construction having relatively moving sections.