US PATENT SUBCLASS 182 / 144
.~.~.~ Platform continuously level

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

141  DF  PLATFORM WITH ELEVATING OR LOWERING MEANS {3}
142  DF  .~ Suspended {3}
143  DF  .~.~ Simultaneously operable suspension means {1}
144.~.~.~ Platform continuously level

DEFINITION

Classification: 182/144

(under subclass 143) Device in which all the suspension means are simultaneously operable to maintain the platform level.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2.1+, for a level platform supported on an angularly movable support.