Folding ladder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 24, 2001
Grant Date -
N/A
app pub date -
Aug 2, 1999
filing date -
Mar 4, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The pull-out sections of folding ladders must be locked on the guiding elements pertaining thereto for ladder use and should also be easily unlocked. A locking bolt used to fix the elements can be axially and manually moved inside a guide element against an adjustment spring to engage a hollow profile section of a rung on the pull-out sections. A lockable guide element with a bayonet fitting is included on the ladder element to enable easy locking and unlocking.
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