Locking entry grid

Static structures (e.g. – buildings) – Specified wear or friction-type traffic-carrying surface

Patent

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Details

52667, 52669, E04F 1710

Patent

active

058529020

ABSTRACT:
An entry grid includes a plurality of spaced, side-by-side, grid sections each having a tread rail and a depending support leg with sections interlocked by a locking bar extending transversely through respective locking holes in the support legs. The support legs include locking teeth engaged by complementally configured element teeth of corresponding locking elements extending radially from the locking bar shaft.

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Dirt Control Foot Mats & Gratings; J.L. Industries; 12690/JLI, BuyLine 3573; 1997.
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