Electrically heated glass pane
First Claim
1. An electrically heated glass pane adapted for use as a window for an automobile comprising:
- (a) a glass pane,(b) a pair of power supply conductors,(c) a plurality of heating conductors, each heating conductor connected at a terminal section to said power supply conductors, and each of said conductors formed of an electrically conductive material disposed on a surface of said glass pane,(d) a strip both covering said power supply conductors and extending laterally of the same providing a protective layer, said strip formed of an electrically insulating material, and wherein each terminal section of said heating conductors below said strip is widened throughout a transition region toward said power supply conductor so that the electric resistance of said terminal section is less than the electric resistance of increments of each heating conductor between said terminal sections.
1 Assignment
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Accused Products
Abstract
An electrically heated glass pane includes a plurality of heating conductors (2) comprising a family of parallel conductors extending between a pair of power supply conductors (3) both disposed on and burnt-in a surface of a glass pane (1). A strip (4), of non-conductive material, covers conductors (3) and extends laterally from the edges of the conductors. The conductors (2) merge into the conductors (3) at a transitional region (7) broadened by an increasing flare so that the cross section of the region, determining the electrical resistance, is greater than the cross section of the conductors (2) providing resistive heating. A layer (12) which covers the same area as the strip (4) may be disposed below each conductor (3), directly on the surface of the glass pane (1). An opening (16) is recessed in layer (12), so that the conductors (3) are connected directly with the surface of glass pane (1). A connecting element (14) for connecting the conductors (3) to a source of power is soldered to the conductors (3) above the opening (16).
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Citations
12 Claims
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1. An electrically heated glass pane adapted for use as a window for an automobile comprising:
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(a) a glass pane, (b) a pair of power supply conductors, (c) a plurality of heating conductors, each heating conductor connected at a terminal section to said power supply conductors, and each of said conductors formed of an electrically conductive material disposed on a surface of said glass pane, (d) a strip both covering said power supply conductors and extending laterally of the same providing a protective layer, said strip formed of an electrically insulating material, and wherein each terminal section of said heating conductors below said strip is widened throughout a transition region toward said power supply conductor so that the electric resistance of said terminal section is less than the electric resistance of increments of each heating conductor between said terminal sections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. The combination comprising:
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(a) a vehicle body, (b) a frame element for supporting a window and, in turn, supported by said body, (c) a window including; (1) a glass pane, (2) a pair of power supply conductors, (3) a plurality of heating conductors, each heating conductor connected at a terminal section to said power supply conductors, and each of said conductors formed of an electrically conductive material disposed on a, surface of said glass pane, (4) a strip both covering said power supply conductors and extending laterally of the same providing a protective layer, said strip formed of an insulating material, and wherein each terminal section of said heating conductors below said strip is widened throughout a transition region toward said power supply conductors so that the electric resistance of said terminal sections is less than the electric resistance of increments of each heating conductor between said terminal sections, and (d) adhesive means for adhesively securing said window within said frame.
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Specification