Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Collapsible ladder
Patent
1996-08-22
1998-06-09
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Collapsible ladder
182162, 1821801, E06C 100
Patent
active
057621632
ABSTRACT:
The invention relates to platform step stools wherein a top step of the stool is movable from its top position to a position in alignment with the step below it to provide for a wider platform than a single step and in particular, to a particular single handle actuated locking mechanism for securing the top step both in its top and alignment height positions.
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Chin-Shue Alvin C.
Cosco, Inc.
Smith Richard M.
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