US PATENT SUBCLASS 191 / 60.4
.~.~.~ Axial slide

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}
60.4.~.~.~ Axial slide

DEFINITION

Classification: 191/60.4

(under subclass 59) Devices wherein the shank of the head or harp has an axially slidable connection with the

trolley-pole, usually against spring-pressure.