US PATENT SUBCLASS 182 / 68.3
.~.~.~ Having gear means for erecting ladder

Current as of: June, 1999
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182 /   HD   FIRE ESCAPE, LADDER, OR SCAFFOLD

63.1  DF  HAVING TRANSPOSITIONING BASE AND ERECTING MEANS {4}
64.1  DF  .~ Ladder pivotably mounted on transpositioning base (e.g., on vehicle) {2}
68.1  DF  .~.~ Extension ladder pivotally mounted to be erected about a horizontal axis {3}
68.3.~.~.~ Having gear means for erecting ladder

DEFINITION

Classification: 182/68.3

Having gear means for erecting ladder:

(under subclass 68.1) Device wherein the pivotal motion of the extension ladder on the horizontal axis is actuated by the meshing engagement between a toothed wheel and another toothed wheel or a toothed segment.