US PATENT SUBCLASS 191 / 91
.~.~ Spring-retracted

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

45 R  DF  COLLECTORS {8}
85  DF  .~ Trolley retrievers {4}
91.~.~ Spring-retracted {1}
92  DF  .~.~.~> Rope-actuated {1}

DEFINITION

Classification: 191/91

(under subclass 85) Trolley retrievers wherein there is a spring motor which overcomes the erecting motor and retracts the trolley, the holding or restraining means of the retracting motor being tripped or set in operation when the trolley leaves the conductor.