LADDER WITH TREAD SYSTEM
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United States of America Patent
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Issued Date -
May 20, 2021
app pub date -
Feb 6, 2018
filing date -
Feb 7, 2017
priority date (Note) -
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Abstract
A reconfigurable ladder includes a first ladder section and a second ladder section each having several steps. The first and second ladder sections are coupled to one another by a hinge that mounts the second ladder section to the first ladder section for movement about an axis such that the ladder can be reconfigured to FOLDED, UNFOLDED, and FULL-EXTENSION modes.
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