US PATENT SUBCLASS 182 / 228.4
.~ Sleeve-type connection

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

228.1  DF  RUNG OR RUNG-TO-STILE CONNECTION {5}
228.4.~ Sleeve-type connection

DEFINITION

Classification: 182/228.4

Sleeve-type connection:

(under subclass 228.1) Device comprising a ferrule surrounding the end portion of the tubular ladder step for fastening the step and side rail together.