Patent ID: 7100989

Claim:
A collapsible seat cushion for incorporation in a collapsible seat, the collapsible seat cushion comprising: a first cushion plate; a second cushion plate; a first plurality of springs disposed between the first cushion plate and the second cushion plate such that the first cushion plate and the second cushion plate are positionable at a first relative position and a second relative position, the first relative position defining a first average distance between the first and second cushion plates and the second relative position defining a second average distance between the first and second cushion plates, the second average distance being less than the first average distance, wherein each spring of the plurality of springs being rotatably attached to both the first cushion plate and the second cushion plate; and at least one support bracket attached to the second cushion plate, the at least one support bracket being moveable towards an end of the collapsible seat.