US PATENT SUBCLASS 182 / 207
.~ Extension
Current as of:
June, 1999
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182 /
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FIRE ESCAPE, LADDER, OR SCAFFOLD
194
DF
LADDER
{10}
207
.~ Extension {2}
208
DF
.~.~
> Mechanical or power-extending
209
DF
.~.~
> With latch {2}
DEFINITION
Classification: 182/207
(under subclass 194) Device comprising lapping ladder sections relatively movable to provide for length adjustment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22+, for a stepladder convertible to an extension ladder.
40+, for an upwardly extensible flexible escape.
66.1+, for ladder sections on a rotatable transpositioning base.
68.1+, for reciprocating ladder sections combined with erection and transpositioning means. 166+, for a stepladder having extensible stiles or prop.
168, for an extension ladder with a pivoted prop.
195, for a ladder comprising slidable-nested single rung stile units.
201+, for supporting surface compensating means comprising an extensible stile.
