Fire escape – ladder – or scaffold – Horizontal traversing - actuation – control – or response – Occupant actuation or control
Patent
1996-03-06
1997-08-05
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Horizontal traversing - actuation, control, or response
Occupant actuation or control
182 17, 16 29, E06C 500
Patent
active
056533063
ABSTRACT:
A ladder system comprising a ladder having side rails and a plurality of steps disposed between the side rails. The ladder system also is comprised of at least one corner brace for supporting a bottom step of the ladder. The corner brace is attached to a side rail of the ladder and the bottom step. Additionally, the ladder system is comprised of at least one caster assembly integrally attached to the corner brace for allowing the ladder to roll. Preferably, the caster assembly and corner brace are disposed on the ladder such that a predetermined weight placed on the ladder prevents the ladder from rolling. The corner brace is preferably comprised of a first portion, a second portion connected to the first portion and a third portion connected to the second portion. The first portion is attached to a bottom of the ladder. The second portion is attached to the caster assembly. Additionally, the third portion is attached to a rail of the ladder. A caster apparatus comprises a corner brace for supporting a bottom step of a ladder. The caster apparatus is also comprised of a caster assembly integrally attached to the corner brace for allowing the ladder to roll. A method for forming a ladder system. The method comprises the steps of attaching a caster assembly to a corner brace for a ladder such that the caster assembly is in biased sliding relationship with the corner brace. Then, there is the step of fixing the corner brace having the caster assembly to a bottom step of the ladder and to a side rail of the ladder such that the rail is maintained off of ground by the caster assembly when there is essentially no weight on the ladder. Preferably, after the fixing step, there is the step of rolling the ladder on the caster assembly to a desired location.
REFERENCES:
patent: 1226894 (1917-05-01), Koehler
patent: 1635389 (1927-07-01), Shuffleton
patent: 2314478 (1943-03-01), Brower
patent: 2521114 (1950-09-01), Campbell
patent: 2800679 (1957-07-01), Schultz
patent: 5148889 (1992-09-01), Fenwick
Bendickson Roy B.
Smith Jay P.
Chin-Shue Alvin C.
Schwartz Ansel M.
Werner Co.
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