A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Collapsible stair with foldable ramp
A collapsible stair with foldable ramp can include a first step, and a second step nestable within the first step such that when the collapsible stair is in a closed position the second step is aligned with the first step and when the collapsible stair is in an open position a lateral offset between the second step and the first step is increased. A third step can be nestable within the first step such that when the collapsible stair is in a closed position the third step is aligned with the second step and is in an open position a lateral offset between the third step and the second step is increased. A ramp can be rotatably coupled to the first step to rotate from a stair position to a ramp position, wherein the ramp position comprises the second step and the third step being covered by the ramp.
Collapsible stair with foldable ramp
A collapsible stair with foldable ramp can include a first step, and a second step nestable within the first step such that when the collapsible stair is in a closed position the second step is aligned with the first step and when the collapsible stair is in an open position a lateral offset between the second step and the first step is increased. A third step can be nestable within the first step such that when the collapsible stair is in a closed position the third step is aligned with the second step and is in an open position a lateral offset between the third step and the second step is increased. A ramp can be rotatably coupled to the first step to rotate from a stair position to a ramp position, wherein the ramp position comprises the second step and the third step being covered by the ramp.
Collapsible stair with foldable ramp
TAGART WALLACE (author) / TAGART YVONNE (author)
2018-01-02
Patent
Electronic Resource
English