Ladder and method of construction
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United States of America Patent
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-
Jun 27, 1995
Grant Date -
N/A
app pub date -
Feb 20, 1992
filing date -
Feb 20, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides an article which incorporates a jointed component, preferably a ladder, that includes a first member, a suitably aligned internal annuli, a second member, and a setting medium. The first member is formed of hollow section channel and has at least one socket in the form of a hole formed therein. The internal annuli is disposed within the first member and has opened ends aligned with the hole and splines extending within the annuli. The annuli also includes at least one angled flange disposed at one end of the annuli for receiving a portion of the setting medium. The second member is engaged within the annuli. The second member has a sealed end and is adapted to snugly fit into the socket. The setting medium is disposed between the end of the second member and the first member and between at least a portion of the interface between the second member and annuli. The invention provides a unique and highly reliable jointing method applicable to non ductile materials and, in particular, to fiberglass.
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