Stair assembly, an object and a stair assembly operating method
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United States of America Patent
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Oct 25, 2022
Grant Date -
Jan 14, 2021
app pub date -
Mar 25, 2019
filing date -
Mar 23, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
This invention relates to a stair assembly to be arranged in a stairwell opening of an upper floor, comprising: —a girder assembly; —a plurality of steps mounted to the girder assembly; and —a guard structure, wherein the girder assembly is pivotably mountable to the upper floor to pivot about a pivot axis between an operational position, in which the girder assembly extends obliquely downwards, and a hidden position, in which the girder assembly extends horizontally, wherein the moveable guard structure is moveable between an operational position, in which the guard structure extends upwards, and a hidden position, in which the guard structure has moved downwards, and wherein the stair assembly is configured such that when the girder assembly and the guard structure are in their respective hidden positions a person is able to walk over the stair assembly as part of the upper floor.
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