Electrically heatable vehicle glass pane

• US 4,721,845 A
• Filed: 09/10/1986
• Issued: 01/26/1988
• Est. Priority Date: 09/10/1985
• Status: Expired due to Fees

• Current Assignee: Saint-Gobain Vitrage "LES Miroirs"
• Original Assignee: Saint-Gobain Vitrage
• Inventors: Sauer, Gerd, Kunert, Heinz, Ohlenforst, Hans
• Primary Examiner(s): PASCHALL, MARK H
• Application Number:
  US06/905,459
• Time in Patent Office: 503 Days
• Field of Search: 219/522, 219/203, 219/541, 219/543, 219/547, 219/202, 219/279, 338/307-309, 338/322, 338/35, 428/192, 428/209, 428/210
• US Class Current: 219/203
• CPC Class Codes: H05B 2203/016 Heaters using particular connecting means
• CPC Class Codes: H05B 3/84 Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields

Abstract

In an electrically heatable automobile glass pane with heating conductors printed onto and baked into a surface, which conductors are connected to printed-on and baked-in collecting conductors, metal strips are disposed on the baked-in collecting conductors and are electrically connected with these collecting conductors. The baked-in collecting conductors and the metal strips connected with them are furnished with a plastic coating which jointly covers them and is glued to them and to the glass surface.

Claims

1. An electrically heatable glass pane comprising:

a glass pane member;

printed-on and baked-in thin heating electrical conductors disposed on one face of said pane member;

printed-on and baked-in collecting electrical conductors disposed on said one face and connected with said heating conductors;

metal strips disposed on, and electrically conductingly connected with, said collecting conductors; and

a plastic coating covering said collecting conductors and metal strips and bonded to said collecting conductors, metal strips and glass pane, wherein said plastic coating comprising a hardenable adhesive material applied on said collecting conductors and metal strips, and hardened in place.

2. The pane of claim 1, wherein said metal strips comprise strips of metal sheet.

3. The pane of claim 1, wherein said metal strips comprise flat wire strands.

4. The pane of claim 1, including soldered connections between said metal strips and said collecting conductors.

5. The pane of claim 1, including ultrasonic welded connections between said metal strips and said collecting conductors.

6. The pane of claim 1, electrically conductive adhesive connections between said metal strips and said collecting conductors.

7. The pane of claim 1, including an opaque frame-like facing adjacent edges of said one face of said pane member, wherein said collecting conductors and said plastic coating are formed on said facing.

8. The pane of claim 7, including an adhesive strand applied to said plastic coating for adhering said pane to a vehicle frame.

9. The pane of claim 1, wherein said collecting conductors, said metal strip and said plastic coating are disposed at a distance from edges of said pane and within viewing area thereof.

10. The pane of claim 9, including an opaque frame-like facing adjacent edges of said one face of said pane member, wherein said collecting conductors and said plastic coating are formed on said facing.

11. The pane of claim 10, including a flat hardened adhesive coating disposed on said facing.

12. The pane of claim 11, wherein an edge of said flat adhesive coating opposite said pane edge includes lip means for retaining adhesive material when said pane is set into a vehicle frame.

13. The pane of claim 1, wherein said plastic coating comprises a moisture hardenable, single component polyurethane adhesive.

14. The pane of claim 1, wherein said plastic coating comprises a two component reaction adhesive.

15. The pane of claim 1 wherein said plastic coating covers less than the entirely of said one face.

16. The pane of claim 1 wherein said one face is an outer face of said glass pane.