(57) A transparent window comprising a glazing material having a tapering region, an electroconductive
heating film which extends over at least the tapering region of the glazing material
and is divided into a plurality of areas, an electrical connecting means which electrically
connects together at least two of the areas so as to define at least one sheet resistor
in the electroconductive film, the electrical connecting means comprising at least
two rows of spaced electrical connections to the film, each of which rows extends
along a respective tapering edge of a respective area which is electrically connected
to another area, a plurality of electrical connectors external to the film which electrically
connect together respective electrical connections, and electrical contacts for the
or each sheet resistor, a respective electrical contact extending across each of two
ends of the or each sheet resistor for application of an electrical power supply.
The invention also provides a method of manufacturing such a transparent window.
|
|
