Abstract Described herein is a retractable staircase comprising a first side stringer and a second, substantially parallel, side stringer connected by a plurality of steps. The first side stringer is fixedly attached to a wall and the second side stringer is pivotally 5 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 10 move substantially simultaneously. (Figure 1a) cor CDr cK
A RETRACTABLE STAIRCASE
2022-12-22
Patent
Electronic Resource
English