Patent ID: 7411158
Filing Date: 2008-08-12
Classification: B32B,B64F,H05B

Abstract:
1. A heatable composite pane, comprising: a heating area including heating wires embedded in the composite pane, the composite pane having a trapezoidal outline; at least two main busbars that connect ends of a first group of heating wires to one another electrically in parallel and that are located opposite along side edges of the composite pane, which run parallel to one another, and at least one of the busbars extends along the side edge in an area of an outer triangular surface of the trapezoidal outline, wherein the outer triangular surface of the trapezoidal outline includes at least a second group and a third group of heating wires that can be fed electrically via the busbars and that run essentially parallel to one another, in the area of the outer triangular surface, heating wires in the second group and the third group have different lengths and are combined to be connected in parallel with the first group, and the second group and the third group are electrically connected to one another in series such that an effective wire length between the two main busbars is increased, to homogenize heating power in the triangular surface with heating power in the heating area.