US PATENT SUBCLASS 182 / 2.9
.~.~.~ Hydraulically operated

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


182 /   HD   FIRE ESCAPE, LADDER, OR SCAFFOLD

2.1  DF  MEANS MAINTAINING PLATFORM LEVEL ON ANGULARLY MOVABLE SUPPORT {2}
2.3  DF  .~ Swingable support {6}
2.8  DF  .~.~ Foldable hinged support {1}
2.9.~.~.~ Hydraulically operated

DEFINITION

Classification: 182/2.9

Hydraulically operated:

(under subclass 2.8) Device comprising a telescopic cylinder and piston rod form of hydraulic lift to pivot the boom section.