US Patent 11039682 Platform mechanism

A stowable platform is connected to a frame with a first and second trolley, each trolley is moveable inside a channel and has an upper and lower roller. The lower rollers are tied to a mechanism that moves them in the channels in a linear motion. The upper rollers are in contact with one side of the channel from the offset center of gravity in the platform. The platform moves between a stored position defined by the lower roller near a terminal end of the channel and a use position defined by the upper roller located in an overhanging end of the channel and the lower roller closer to the overhanging end than the terminal end.