Fire escape – ladder – or scaffold – Ladder and platform – Platform with ladder as support
Patent
1997-03-17
2000-11-21
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Ladder and platform
Platform with ladder as support
182121, E06C 716
Patent
active
061489573
ABSTRACT:
The ladder scaffold assembly of the present invention for releasable mounting on two spaced apart ladders placed side by side comprises a scaffold platform having opposing first and second lateral ends and a ladder attachment bracket disposed on the opposing ends of the platform for supporting the platform in an elevated horizontal position intermediate two spaced apart ladders. Step engagement means are disposed on each ladder attachment bracket, wherein the step engagement means comprise an upward sloping surface to releasably engage and securely hook onto a step from underneath the step. The step engagement means is rigidly attached to the ladder attachment bracket and is incapable of independent movement in relation to the platform. The upward sloping surface permits releasable engagement to a step that may comprise a step of a step ladder or adjacent side by side rungs of an extension ladder. The ladder scaffold assembly may additionally comprise step contact means disposed on the ladder attachment bracket to permit temporary contact to a second step of a ladder located above the first step. The step contact means permits temporary contact with a second step that may comprise a step of a step ladder or rung of an extension ladder. The inclusion of the step contact means in the ladder attachment bracket allows for releasable mounting of the ladder scaffold on two spaced apart ladders placed side by side in an additional situation wherein the step engagement means releasably engage a single rung of an extension ladder. The step contact means are also rigidly attached to the ladder attachment brackets and are incapable of independent movement in relation to the platform. The ladder attachment brackets may be independent and separable from the scaffold platform. Or, the ladder attachment brackets may be integrally formed with the scaffold platform.
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Ahl Brian E.
Ahl Frank E.
Chin-Shue Alvin
Johnson Jerry
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