Patent ID: 6817400
Filing Date: 2004-11-16
Classification: E06B

Abstract:
A cell for use in a multi-cell window covering comprising:a flexible material defined as an elongated member having axial and transverse directions, a portion of the flexible material being stiffened to create at least one axially extending flexible junction, the flexible material having transversely opposed edges that are fixed together to form a closed hollow cell having upper and lower portions; and first engagement formation located in said upper portion of the cell and a second engagement formation located in said lower portion of the cell, said engagement formations being adapted to selectively engage first and second cell control elements, respectively, to control the cross-sectional shape of the cell, each of said engagement formations including a variable width opening into said cell, said opening including wider portions through which cell control elements can freely pass and narrower portions through which such cell control elements cannot pass, said wider portions of each of said first and second engagement formations being vertically aligned with said narrower portions of the other of said first and second engagement formations, respectively.