Fire escape – ladder – or scaffold – Wall- or floor-attached – Single pole or strand
Patent
1996-08-20
1998-10-06
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Wall- or floor-attached
Single pole or strand
182 93, 182189, E06C 110
Patent
active
058163620
ABSTRACT:
A modular safety ladder system for climbing trees is provided, comprising a single support member having a lower end and an upper end; a bottom step attached to the lower end; a top step attached to the upper end; an intermediate step attached to the support member between the bottom step and the top step; a flexible strap attached to the support member for suspending the ladder module from the tree, wherein the strap is placed in tension when weight is exerted on the ladder module; first and second stabilizers attached to the upper end and the lower end of the support member, respectively, for stabilizing the ladder module against the tree, wherein the first and second stabilizers include surfaces which are caused to forcibly contact the tree when the strap is placed in tension; and a safety loop connected to the strap for allowing a secure attachment between the strap and a coupling device on the climber, wherein the safety loop is constructed in a manner to support the weight of the climber. Optionally, the first and second stabilizers are attached to the top and bottom steps, respectively, wherein each step is removably and lockingly slidable relative to the support member.
REFERENCES:
patent: 2302997 (1942-11-01), Lucas
patent: 3908791 (1975-09-01), Kleine
patent: 5109954 (1992-05-01), Skyba
patent: 5165499 (1992-11-01), Bell
patent: 5277273 (1994-01-01), Grimes
patent: 5439072 (1995-08-01), Jenkins
patent: 5509499 (1996-04-01), Prejean
Chin-Shue Alvin C.
Delaune Warner J.
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