US PATENT SUBCLASS 182 / 69.1
.~.~.~ Having lazy tong extending means

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}
69.1.~.~.~ Having lazy tong extending means {2}
69.2  DF  .~.~.~.~> And winch to actuate lazy tong
69.3  DF  .~.~.~.~> And gear to actuate lazy tong

DEFINITION

Classification: 182/69.1

Having lazy tong extending means:

(under subclass 68.1) Device wherein the ladder is extended by a scissors structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

208, for mechanical or power extending means for an extension ladder, generally.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

521, for lazy tong mechanism, generally.