Fire escape – ladder – or scaffold – Ladder with pivoted prop – Lateral prop
Patent
1994-10-13
1998-08-11
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Ladder with pivoted prop
Lateral prop
182107, E06C 122
Patent
active
057914370
ABSTRACT:
A ladder with nesting braces device is disclosed which significantly improves the bilateral stability of the ladder minimizing risk of injury to an individual while simultaneously retaining a standard ladder design profile. The nesting braces internally receive the pair of side support rails during storage of the ladder. Each of the nesting braces includes a hinge engagement section having at least one locking mechanism. Each of the side support rails includes a hinge and a pair of gusset plates having a locking mechanism adapted for engagement to the hinge plates. The hinge and a corresponding hinge engagement section provides for the structural support and pivotal rotation of a nesting brace with respect to a side support rail. Each of the nesting braces may additionally include an expansible-leg having a releasable carriage/housing for vertical adjustment to securingly engage a surface during use of the ladder upon a non-level surface.
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Compuserve Computer Search Dated Jul. 24, 1993; 14 pp.
Compuserve Computer Search Dated Jul. 25, 1993; 7, 6, 9 pp.
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