Electrically heated window

摘要

Three embodiments of laminated window (20;50,60;70) are described in which wires (22, 56, 62, 78) extend along lines of non-circular curvature, forming arrays (21,55,63,81) of previously unattainable configurations. Electric current is passed through the wires to heat the window and disperse condensation or ice on its surface. The embodiments of the invention provide a vehicle windscreen (20) in which substantially all the transparent portion (49) is thus heated; a curved rear window (50,60) in which the wires (56,62) are horizontal when installed in a vehicle; and a window (70) having a heated rest portion (71) for a window wiper. A method of manufacturing such windows, and an apparatus (90) for forming such arrays of wires are also provided.