Convertible ladder
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United States of America Patent
Stats
-
Aug 18, 1981
Grant Date -
N/A
app pub date -
Feb 12, 1979
filing date -
Feb 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A convertible ladder is provided which can be set up as an extension ladder, a step ladder or a trestle. A pair of leg assemblies each have a pair of sides connected by a plurality of rungs. Each leg assembly has regularly spaced hooks along its length which engage with the end lugs of a plank member. The plank member has arms provided with lugs which engage another pair of hooks on each leg assembly to form a trestle. The leg assemblies are also provided with a pair of upturned hook lugs which engage a rung of the other leg to form an extension ladder. In the step ladder configuration, the leg assemblies are maintained at maximum angular relationship by means of ties pivotally connected to one leg assembly with openings to engage pins on the other leg assembly.
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