US PATENT SUBCLASS 191 / 60.3
.~.~.~ Vertical swing

Current as of: June, 1999
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191 /   HD   ELECTRICITY: TRANSMISSION TO VEHICLES

45 R  DF  COLLECTORS {8}
50  DF  .~ Trolley {10}
59  DF  .~.~ Heads {9}
60.3.~.~.~ Vertical swing

DEFINITION

Classification: 191/60.3

(under subclass 59) Devices wherein the head or harp is pivotally or flexibly connected to the trolley to permit the head to swing vertically toward or from the trolley-wire.