Ceiling ladder
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United States of America Patent
Stats
-
Sep 24, 1991
Grant Date -
N/A
app pub date -
Aug 10, 1990
filing date -
Aug 10, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A foldable ladder having a plurality of sections which align during use to form a continuous ladder and which are foldable upon themselves for storage in a ceiling frame. The ladder includes hinges for connecting the sections. Each hinge has a first load bearing surface and second load bearing surface which contact each other for support a load when the ladder is extended. The ladder also includes an improved counter balance assembly which connects the ladder to the ceiling frame; and a continuous hinge which connects the ladder to the ceiling frame in a manner which eliminates air from passing between the hinge and the ceiling frame.
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Family
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Cited Art Landscape
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