US 11,885,180 B2
Modular ladder system
Charles J. MacKarvich, Atlanta, GA (US)
Filed by Charles J. MacKarvich, Atlanta, GA (US)
Filed on Jan. 17, 2023, as Appl. No. 18/097,869.
Claims priority of provisional application 63/300,564, filed on Jan. 18, 2022.
Prior Publication US 2023/0228150 A1, Jul. 20, 2023
Int. Cl. E06C 5/04 (2006.01); E06C 5/36 (2006.01); E06C 7/18 (2006.01); E06C 7/50 (2006.01); E06C 5/42 (2006.01); E06C 7/42 (2006.01)
CPC E06C 5/04 (2013.01) [E06C 5/36 (2013.01); E06C 7/183 (2013.01); E06C 5/42 (2013.01); E06C 7/42 (2013.01); E06C 7/50 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A modular ladder system comprising:
a plurality of ladder modules comprising:
a first ladder module comprising a first plurality of ladder steps;
a second ladder module comprising a second plurality of ladder steps, wherein each of the first ladder module and the second ladder module comprise a pair of step rail segments, each of the first plurality of ladder steps extend between the pair of step rail segments of the first ladder module, and each of the second plurality of ladder steps extend between the pair of step rail segments of the second ladder module;
a ladder base, the modular ladder system is configurable in an unassembled configuration and an assembled configuration; and
a base support assembly comprising:
a first support brace extending substantially vertically between the ladder base and a first one of the pair of step rail segments of the first ladder module at a first ladder side of the first ladder module,
a second support brace extending substantially vertically between the ladder base and a second one of the pair of step rail segments of the first ladder module at a second ladder side of the first ladder module; and
a first cross member and a second cross member each extending between the first support brace and the second support brace;
wherein:
in the unassembled configuration, the first ladder module is detached from the second ladder module and the first and second ladder modules are stacked on the ladder base;
in the assembled configuration, the first ladder module is coupled to the ladder base and the second ladder module is attached to the first ladder module opposite the ladder base to define a ladder extending upward from the ladder base;
the first cross member crosses the second cross member to define an X-shaped cross member assembly;
each of the first and second cross members are coupled to the first support brace by a first brace tensioning knob;
each of the first and second cross members are coupled to the second support brace by a second brace tensioning knob; and
each of the first brace tensioning knobs and second brace tensioning knobs are rotatable to tension the first and second cross members with the first and second support braces.