US PATENT SUBCLASS 191 / 70
.~.~.~.~ Tension or compression

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

45 R  DF  COLLECTORS {8}
50  DF  .~ Trolley {10}
66  DF  .~.~ Stands {2}
68  DF  .~.~.~ Spring erector {2}
70.~.~.~.~ Tension or compression

DEFINITION

Classification: 191/70

(under subclass 68) Trolley stands of the spring type wherein the operating spring is of the tension or compression type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

85+, for trolley retrievers with torsion type operating springs.