RETRACTABLE WINDOW COVERING

摘要

A retractable covering devices, in particular, light control window covering (30) including a lobed head rail (10) to prevent creasing and/or skewing of the window covering when rolled up, the head rail (10) having means (20,25) for attaching the window covering which ensures proper alignment of the window covering (30). Also included are a bottom rear rail (40) having an anti-skewing device (48) which comprises a slidable weight for compensating for skewed roll up; a flip-catch device for preventing wrong-way roll up of the window covering; and a top-catch mechanism (62) for preventing both wrong-way roll up and over rotation in the proper roll up direction.