US PATENT SUBCLASS 182 / 182.1
.~.~ Having height adjustable beam

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

179.1  DF  SELF-SUSTAINING {5}
181.1  DF  .~ Scaffold horse (e.g., trestle) {7}
182.1.~.~ Having height adjustable beam {3}
182.2  DF  .~.~.~> By extensible leg brace {1}
182.4  DF  .~.~.~> By slidable leg
182.5  DF  .~.~.~> By extensible leg

DEFINITION

Classification: 182/182.1

Having height adjustable beam:

(under subclass 181.1) Device including an adjustment means for setting the beam at different positions of use.

SEE OR SEARCH THIS CLASS, SUBCLASS:

105, for pivoted ladders having a central upright supported therebetween.

151, for a knockdown scaffold kit.