US PATENT SUBCLASS 182 / 186.1
.~.~ Beam clamped by leg actuation

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}
186.1.~.~ Beam clamped by leg actuation {1}
186.2  DF  .~.~.~> Pivotally connected legs

DEFINITION

Classification: 182/186.1

Beam clamped by leg actuation:

(under subclass 181.1) Device wherein the horizontal beam is gripped by its supporting legs in reaction to pressure from the supporting floor surface.