Retractable staircase
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United States of America Patent
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Aug 9, 2022
Grant Date -
May 6, 2021
app pub date -
Jan 8, 2021
filing date -
Aug 11, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A retractable staircase having a first side stringer and a second substantially parallel side stringer connected to a plurality of steps. The first side stringer is fixedly attached to a wall and the second side stringer is pivotally movable about the first side stringer between an extended position, where the steps lie substantially horizontally between the stringers, and a retracted position where the steps lie substantially vertically between the stringers. The retractable staircase also includes a collapsible handrail and a gate that are interconnected with the side stringers and the pivoting steps so that when one of them is moved, the other two move substantially simultaneously.
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Family
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Cited Art Landscape
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