US PATENT SUBCLASS 212 / 317
.~ Having vertically or horizontally swinging boom on bridge or trolley

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

312  DF  TRAVELING BRIDGE {13}
317.~ Having vertically or horizontally swinging boom on bridge or trolley

DEFINITION

Classification: 212/317

Having vertically or horizontally swinging boom on bridge or trolley:

(under subclass 312) Subject matter wherein a boom* is pivotally attached to (a) the traveling bridge* or (b) a trolley* adapted to travel along the bridge.

SEE OR SEARCH THIS CLASS, SUBCLASS:

224, for a trolley-mounted horizontally swinging boom wherein the track or guide on which the trolley moves is not carried by a traveling bridge.