Electrically heated window

A method of making an electrically heated window having a peripheral edge including at least one radiused corner, and having at least two plies of transparent glazing material, at least one ply of interlayer material, and electrically resistant heating means extending over one of said plies, the method including the steps of:

• laying at least one length of busbar strip in a predetermined position on one of said plies to form part of a busbar;
• forming a corner of the busbar by positioning a preformed separate corner piece of busbar strip of conductive material adjacent the at least one radiused corner of the peripheral edge of the window, and adjacent said at least one length of busbar strip;
• connecting said corner piece and said length of busbar strip together electrically;
• adding further elongate electrical connection means, and arranging said connection means to extend from the heating means past a peripheral edge of the window and terminate outside the window;
• and
• laminating said plies of glazing material together with the ply of interlayer material and the electrically resistant area heating means extending between them.

A method of making an electrically heated laminated window from at least two plies of transparent glazing material, at least one ply of interlayer material, an electrically resistant heating means extending over one of said plies, and at least two lengths of busbar strip, the method including the steps of:

• providing at least one of the busbar strips with solder;
• laying the at least two lengths of busbar strip in overlapping relationship on one of said plies;
• and
• laminating said plies of glazing material together with the ply of interlayer material and the electrically resistant area heating means extending between them, whereby on autoclaving the plies to form the laminated window, the solder melts to provide a secure electrical connection between the busbar strips.