US PATENT SUBCLASS 212 / 171
.~ Traveling bridge


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

170  DF  HAVING CLUTCH OR VARIABLE SPEED TRANSMISSION {4}
171.~ Traveling bridge


DEFINITION

Classification: 212/171

Traveling bridge:

(under subclass 170) Apparatus comprising a bridge* supported above a surface for translational movement over the surface, and wherein the selectively engageable coupling or ratio varying means is provided between a motor and a mechanism for driving the bridge or a mechanism thereof.