Fire escape – ladder – or scaffold – Safety device for ground-supported ladder
Patent
1998-02-17
1999-07-06
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Safety device for ground-supported ladder
248500, 52156, E06C 536
Patent
active
059186992
ABSTRACT:
A ladder anchoring system, for securing a ladder to a ground surface, the ladder having a lowest rung which has a lowest rung length. The anchoring device comprises a pair of spikes and a pair of retaining arms. Each spike is continuous with one of the retaining arms. The retaining arms each have a downturned portion for engaging the lowest rung of the ladder when the spikes are fully inserted into the ground surface. The spikes are spaced apart a distance substantially equal to the lowest rung length with a primary cross support. Additional rigidity is provided by a pair of arcuate supports which extend between the spikes and the primary cross support, and a secondary cross support, which extends between the arcuate supports.
REFERENCES:
patent: 1431154 (1922-10-01), Dilger
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