Lying seat has a frame on whose underside is an area with a single unit curvature and the frame has a lower part and an upper part and connecting struts (4,5) for attaching the lower side

摘要

The lying seat has a frame (2,3) on whose underside is an area with a single unit curvature. The frame has a lower part and an upper part and connecting struts (4,5) for attaching the lower side area with the upper area. The curve has a curb (8) at the foot end and a flat underside (17) whose extension is at a tangent (T) in the area of the curvature. Supporting rollers (12,13,14) position the lower end of the frame of the seat (1).