Fire escape – ladder – or scaffold – Ladder – Extension
Patent
1996-07-18
1998-06-02
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Ladder
Extension
182208, 182213, E06C 706
Patent
active
057587450
ABSTRACT:
An extension ladder comprises a base section comprising a first base rail, a second base rail in spaced relationship and in parallel with the first base rail, and at least a first base rung connected to the first base rail and the second base rail. The extension ladder also comprises a fly section slidably connected to the base section. The fly section comprises a first fly rail, a second fly rail in spaced relationship and in parallel with the first fly rail, at least a first fly rung connected to the first fly rail and the second fly rail, a first combination end cap/guide bracket connected to the bottom of the first fly rail, and a second combination end cap/guide bracket connected to the bottom of the second fly rail. Each end cap/guide bracket is one continuous piece. The first fly rail is adjacent to and in parallel with and in spaced relationship with said first base rail. The second fly rail is adjacent to and in parallel with and in spaced relationship with said second base rail. The first and second combination end cap/guide bracket prevents the fly section separating from the base section and capping the bottom end of the first fly rail and second fly rail, respectively. A combination end cap/guide bracket comprises a back wall. Additionally, the end cap/guide bracket comprises an end closure portion preferably with a slot connected to the back wall. The end cap/guide bracket also comprises a hook portion having a hook connected to the back wall and extending perpendicularly from the end closure portion. Additionally, the end cap/guide bracket comprises a block portion which is disposed adjacent and in parallel with the hook of the hook portion and preferably defines a first channel with the hook.
REFERENCES:
patent: 3464522 (1969-09-01), Kramer
patent: 3502173 (1970-03-01), Arnold
Beggs Robert D.
Hetrich Mitchell H.
Leipheimer Christine A.
Mabie Marc A.
Chin-Shue Alvin C.
Phan Long Dinh
Schwartz Ansel M.
Werner Co.
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