Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1994-12-29
1997-08-12
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
182100, 182 93, 182163, A45F 326
Patent
active
056556233
ABSTRACT:
A ladder having pivotable folding riser sections, includes at least one pair of elongated riser components connected by a folding joint. The components have mating contacting ends abutting each other at an angle 45.degree. from the linear axis of the components. A reinforcing member concentric with said components is positioned across the joint, and a pivotable connection is formed by hinge members connected to each of the ladder components which are pivotally connected to each other by means of a hinge pin located exteriorally of the components. The invention also provides pivoting stand off members and a strap tightening mechanism for providing tightening tension equally on both ends of the strap which thus is not caused to move laterally during tightening.
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