US PATENT SUBCLASS 212 / 225
.~ Having trolley thereon

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

223  DF  HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE {9}
225.~ Having trolley thereon {3}
226  DF  .~.~> Having vertical support remote from pivot (i.e., swinging bridge)
227  DF  .~.~> And vertically swinging
228  DF  .~.~> And means acting independently of hoist mechanism to shift trolley

DEFINITION

Classification: 212/225

Having trolley thereon:

(under subclass 223) Apparatus comprising a bridge* or a boom* having a track or guideway along which a load-supporting trolley* is adapted to move.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71+, for an overhead hoist having a trolley, or a trolley, per se.

242, for a trolley carried by a vertically swinging boom.

312+, for a trolley carried by a traveling bridge.