Ladder kit
First Claim
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1. In a ladder comprising a plurality of interfitting parts which are adapted to be readily disassembled;
- a plurality of elongated tubular elements,at least one frame member, said frame member fastening by means of threaded fastening elements said tubular elements into a parallel pair of side rails of said ladder,said frame member comprising a pair of rung holder brackets having a surface edge which abuts said side rail, wherein said fastening elements pass through said brackets and into said side rails, and wherein said rungs are fixed in said brackets and are received by second apertures in said side rails.
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Abstract
A ladder kit comprises a plurality of parts from which a ladder may be constructed. The parts of the kit may be selected and assembled in a number of ways, resulting in various types of ladder structures. The main components of the assembled ladders include elongated tubular side rail sections and rectangular frame sections. The frame sections fasten the side rail sections into coplanar pairs and form the rungs of the ladder.
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Citations
10 Claims
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1. In a ladder comprising a plurality of interfitting parts which are adapted to be readily disassembled;
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a plurality of elongated tubular elements, at least one frame member, said frame member fastening by means of threaded fastening elements said tubular elements into a parallel pair of side rails of said ladder, said frame member comprising a pair of rung holder brackets having a surface edge which abuts said side rail, wherein said fastening elements pass through said brackets and into said side rails, and wherein said rungs are fixed in said brackets and are received by second apertures in said side rails. - View Dependent Claims (2, 3, 4, 8, 9, 10)
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- 5. A ladder comprising a plurality of interfitting parts, which are adapted to be readily disassembled, the parts comprising at least two modules, each module comprising a pair of elongated tubular elements forming side rails and a plurality of demountable frame members mounted to the tubular elements, each frame member being rectangular and comprising a pair of rungs, the side rails at one end of each module having a reduced end to mate with the ends of the side rails of an adjacent module, and a connecting element joining at least two modules together, the joined modules defining two distinct planes which intersect in a line above the connecting element.
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7. A ladder for use on a surface which is not level, said ladder comprising,
at least one module having first and second ends, said module comprising a pair of side rails and a pair of frame members, each frame member having two rungs, a pair of J-shaped attachment members having first and second ends, the first ends of said modules being coupled to the first ends of said attachment members, wherein the distance from the second ends of the module to the top of the ladder is greater than the distance from the second ends of the attachment members resting on said surface to the top of the ladder.
Specification