Light weight ladder systems and methods
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 15, 2005
Grant Date -
Oct 9, 2003
app pub date -
Apr 5, 2002
filing date -
Apr 5, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for manufacturing a rail for a ladder. The method may include pultruding in a longitudinal direction, a rail having a selected cross-sectional shape. The rail may then be cut to a predetermined length at a distal end. A force may be applied, in a lateral direction, to the rail to form a curvature therein. The curvature may be characterized by a flared portion, a straight portion, and a curved region providing the transition therebetween. The rail may be held at the desired curvature for a time selected for the rail to take on the curvature substantially permanently. The force may then be removed and the rail may be assembled into a ladder.
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International Classification(s)
Cited Art Landscape
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