Foldable stair mechanism

this folding mechanism is controlled by hydraulic. Foldable stair mechanism can be used in places where there is not enough space for a fixed stair. A four bar mechanism is used to actuate the scissor like elements which form the foldable stair mechanism ====================================================== see more concepts click below links ===================================================== Hydraulics Basics - 01 https://youtu.be/z_Gcb5rcGWQ =================================================

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