Electrically heated window

Details Electrically heated window Electrically heated window

1997-01-23

2000-01-04

Walberg, Teresa

Electric heating

Heating devices

With heater-unit housing, casing, or support means

219201, 219202, 219203, 219219, H05B 306, H05B 100

Patent

active

060112441

ABSTRACT:
A window is provided which includes an array of fine, closely spaced wires through which electric current is passed to heat the window. Such windows are useful as vehicle windows, e.g. windscreens, because the heating disperses ice or condensation on the surface of the window, thereby improving visibility. According to the invention, at least some of the wires extend along diverging lines, so that the heated area extends over substantially the whole of the transparent portion of the window. It is also described how to achieve a sufficiently uniform heating effect over the extended heated area. A method of manufacturing such windows, and an apparatus for forming such arrays of wires, are also provided.

REFERENCES:
patent: 3409759 (1968-11-01), Boicey et al.
patent: 3729616 (1973-04-01), Gruss et al.
patent: 3795472 (1974-03-01), Gruss et al.
patent: 3947618 (1976-03-01), Gruss
patent: 3995142 (1976-11-01), Ciardelli et al.
patent: 4209687 (1980-06-01), Bethge et al.
patent: 4395622 (1983-07-01), Dran et al.
patent: 5282301 (1994-02-01), Roentgen et al.

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