US PATENT SUBCLASS 212 / 73
.~ Shiftable track

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

71  DF  OVERHEAD {7}
73.~ Shiftable track {2}
74  DF  .~.~> Longitudinally movable
75  DF  .~.~> Tilting

DEFINITION

Classification: 212/73

Shiftable track:

(under subclass 71) Linear hoists comprising miscellaneous shiftable tracks.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72, for linear hoists extending from ship to ship or from ship to shore.

225+, for horizontally swinging tracks.

312+, for tracks movable bodily in a direction at an angle to their length to transport the load.