Electric heating – Heating devices – Combined with diverse-type art device
Patent
1974-12-09
1977-09-13
Bartis, A.
Electric heating
Heating devices
Combined with diverse-type art device
52171, 200 6105, 219490, 219522, 219547, 338 35, 340235, H05B 102, H05B 306, E06B 712
Patent
active
040484696
ABSTRACT:
The glass pane of a vehicle window is provided on the surface of its central viewing area with a plurality of spaced, parallel linear heating resistors. First and second buses, disposed laterally of the central viewing area, extend transversely of the resistors and supply electric power to the resistors. A miniature transistorized control circuit mounted at a corner of the pane away from the central viewing area controls the supply of power to the buses. A plurality of moisture sensing, electrically conductive probes are provided on the pane at widely spaced zones and are connected to the input terminal means of the control circuit. Each probe includes a first portion coextensive in length with a resistor and running parallel thereto. One of the probes has a second portion parallel to and closely spaced from one of the buses. The control circuit responds to detection of fogging of the pane by anyone of the probes.
REFERENCES:
patent: 2866881 (1958-12-01), McMillen
patent: 3524043 (1970-08-01), Irvine
patent: 3749885 (1973-07-01), Nagasima
patent: 3864659 (1975-02-01), Furuuchi et al.
patent: 3868492 (1975-02-01), Taylor
Ciarniello Giorgio
De Lena Oscar
Bartis A.
Societa Italiana Vetro - Siv S.p.A.
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