Multifunctional adjustable ladder assembly

Details Multifunctional adjustable ladder assembly Multifunctional adjustable ladder assembly

2005-04-19

2005-04-19

Lev, Bruce A. (Department: 3634)

Fire escape, ladder, or scaffold

Ladder

Slidable nested single rung units

C182S166000, C182S204000

Reexamination Certificate

active

06880675

ABSTRACT:
A ladder assembly includes two symmetric support stands pivotally connected with each other. Each of the two support stands includes a main frame, an upper frame, a lower frame, a top bar, a retraction control unit, and four fixing devices. Thus, height of the ladder assembly can be adjusted easily and conveniently, thereby facilitating the user operating the ladder assembly. In addition, the upper frame and the lower frame can be folded on the main frame, so as to reduce the volume the ladder assembly efficiently, thereby greatly facilitating storage and transportation of the ladder assembly.

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