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US 5,332,062 AGranted
Simplified scaffold ladder
OwnerPaul Revereinventor
Life of this patent
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OwnerPaul Revereinventor
Estimating the term…
A combination scaffold ladder device having a scaffold portion which is formed by a prop positioned above a pair of ladder side members, and is connected to the sides by connecting means which include a top step and a pair of extensible spreaders. The parallel ladder side members each contain at least one indentation, and are joined together by a plurality of ladder steps with two of the steps being partial in nature. The ladder structure and the prop in the horizontal position is supported by versatile support members that are attached near the top of the versatile support member housings to the parallel ladder side members by a plurality of pivotable joint pins and locked into position by a further plurality of extensible spreaders. By placing the scaffold on its side or in a vertical position and releasing the locking means on the extensible spreaders by pivoting the versatile support members by means of pivotting joining pins into the indentations of the parallel ladder side members simultaneously joining two partial step/pullout bars of the versatile support members with their mating partial steps on the ladder structure in a parallel manner forming complete steps and transforming the invention into a flat horizontal platform. The vertical placement of the ladder structure away from the prop through the use of extensible spreaders affords the invention its stepladder configuration.
A convertible scaffold and ladder apparatus comprising a prop, a ladder structure including a top step connecting two side rails, said two side rails being attachable in an interfittable relationship with a plurality of support members, said support members being pivotable by pivoting means, said two side rails being interconnected by a plurality of steps, said ladder structure being joinable to said prop by said top step of said ladder structure, said ladder structure and said prop being connected near their respective centers by a plurality of braces, said plurality of support members supporting said prop and said ladder structure when said convertible scaffold and ladder apparatus is in a scaffold mode, and said plurality of support members being further connected to said two side rails by a plurality of further braces, said plurality of support members being two pairs, said plurality of support members of each pair being interconnected by one of a plurality of partial step/pullout bars, said support members being generally H-shaped and said two pairs being interfittable with at least one indentation in said ladder structure.
A convertible scaffold and ladder apparatus comprising a prop, a ladder structure including a top step connecting two side rails, said two side rails being attachable in an interfittable relationship with a plurality of support members,
A combination scaffold ladder apparatus comprising a convertible scaffold configuration which includes a plurality of support members supporting and pivotly attachable in an interfittable relationship with a ladder structure by pivotable means, a plurality of first braces further connecting said support members to said ladder structure, and a plurality of further braces connecting a prop to said ladder structure, said ladder structure being further connected to said prop by an additional connecting means,
Dependencies are inferred from the claim text.