Electrically heatable laminated glass plates having an electrically conductive surface coating
First Claim
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1. An electrically heatable glass laminate, comprising:
- a first glass plate;
a first layer of an electrically conductive coating upon at least a portion of one side of said first glass plate;
a second layer of an electrically conductive surface coating covering said first layer and covering at least a portion of said one side of said first glass plate for providing heat when supplied with electricity;
at least one metal foil strip on at least a portion of said second surface coating, said strip aligned with and extending substantially over the entire area of said first layer of conductive coating and in electrical communication with said surface coating for supplying electricity to said surface coating;
a second glass plate; and
means for joining said one said of said first glass plate to said second glass plate to form a laminate.
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Accused Products
Abstract
An electrically heatable car glazing (1) of laminated glass has a transparent surface coating (8) as the heating resistor. The outer glass plate (2) is provided, along the circumference of its inner side, with a frame-like heat-curing coating (6), and bus bars (7) of an electrically conductive heat-curing paint are provided on the frame-like coating. The surface coating (8) is placed over the bus bars (7), and metal foil bands (10) are placed above the bus bars (7) on the surface coating. The end portions (11) of the metal foil bands (10) are provided with a tear-proof plastic envelope (12), which is bonded to the glass plate (2).
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Citations
31 Claims
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1. An electrically heatable glass laminate, comprising:
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a first glass plate; a first layer of an electrically conductive coating upon at least a portion of one side of said first glass plate; a second layer of an electrically conductive surface coating covering said first layer and covering at least a portion of said one side of said first glass plate for providing heat when supplied with electricity; at least one metal foil strip on at least a portion of said second surface coating, said strip aligned with and extending substantially over the entire area of said first layer of conductive coating and in electrical communication with said surface coating for supplying electricity to said surface coating; a second glass plate; and means for joining said one said of said first glass plate to said second glass plate to form a laminate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electrically heatable glass laminate, comprising:
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a first glass plate; an opaque coating around a circumferential portion of one side of said first glass plate; a first layer of an electrically conductive coating upon a portion of said opaque coating; a second layer of an electrically conductive surface coating covering said first layer, said opaque paint in areas not covered by said first layer, and at least a portion of said one side of said glass plate in area not covered by said opaque paint. at least one metal foil strip on at least a portion of said second surface coating, said strip aligned with and extending substantially over the entire area of said first layer of conductive coating and in electrical communication with said surface for supplying electricity to said surface coating; a second glass plate; and a thermoplastic sheet positioned between the glass plates for joining said first glass plate to said second glass plate to form a laminate. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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- 22. In an electrically heatable glass laminate having first and second glass plates joined across inner surfaces, wherein the inner surface of said first glass plate is coated over at least a first portion thereof with a first electrically conductive coating and over at least a second portion thereof with a second electrically conductive coating, said first conductive coating being in electrical communication with said second conductive coating, the improvement comprising providing at least one metal foil strip on at least a portion of said second surface coating, said strip aligned with and extending substantially over the entire area of said first layer of conductive coating and in electrical communication with said second electronically conductive coating for supplying electricity to said first and second coatings.
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29. An electrically heatable glass laminate, comprising:
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a first glass plate; a first layer of an electrically conductive coating upon at least a portion of one side of said first glass plate; a second layer of an electrically conductive surface coating covering said first layer and covering at least a portion of said one side of said first glass plate for providing heat when supplied with electricity; four metal foil strips in electrical communication with said surface coating for supplying electricity to said surface coating, two of said metal strips extending along said upper edge and two of said metal strips extending along said lower edge, said upper edge strips extending from opposite lateral edges of said glass plate to adjacent points near the middle of said upper edge, and said lower edge strips extending from opposite lateral edges of said glass plate to adjacent points near the middle of said lower edge.
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30. An electrically heatable glass laminate, comprising:
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a first glass plate; an opaque coating around a circumferential portion of one side of said first glass plate; a first layer of an electrically conductive coating upon a portion of said opaque coating; a second layer of an electrically conductive surface coating covering said first layer, and at least a portion of said one side of said glass plate in areas not covered by said opaque paint; at least one copper foil strip between 30 and 80 micrometers thick and between 8 and 16 millimeters wide in electrical communication with said surface coating for supplying electricity to said surface coating, said foil strip extending from within said laminate to outside said laminate, and further comprising a tear-resistant polyimide plastic envelope around a portion of said at least one metal strip, said envelope extending from within said laminate to outside said laminate, said envelope providing a vapor-tight seal around said metal strip; a second glass plate; and a thermoplastic sheet positioned between the glass plates for joining said first glass plate to said second glass plate to form a laminate. - View Dependent Claims (31)
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Specification