Electric heating – Heating devices – Combined with diverse-type art device
Patent
1985-11-07
1988-02-16
Bartis, Anthony
Electric heating
Heating devices
Combined with diverse-type art device
52171, 219345, 219522, 219541, 219543, 219547, 338308, 338309, H05B 300, H01C 700, E06B 712
Patent
active
047257105
ABSTRACT:
An improved electrically heated vision unit in which heat can be concentrated in a selected zone or zones thereof includes at least one sheet of a relatively rigid transparent material (12) having a ceramic enamel (14) extending along at least two opposite edges on one surface thereof. A bus bar is associated with each ceramic enamel on each edge of the sheet and has at least one narrow portion (18) overlying and bonded to an associated one of the ceramic enamel, and at least one wide portion (20) in part overlying and bonded to an associated one of said ceramic enamel and in part overlying and bonded to said one surface of the transparent material. The narrow portions and the wide portions of the pair of bus bars are in register with like portions on an opposed one of the bus bars. An electrically conductive transparent coating (22) of generally uniform thickness and composition extends between the pair of bus bars with sections thereof between juxtaposed wide portions of the pair of bus bars being bonded only to the wide portions of the bus bars and the one surface of the transparent material, and with other sections thereof between juxtaposed narrow portions of the pair of bus bars being bonded to the narrow portions of the bus bars, the ceramic enamel and the one surface of the transparent material. Structure is provided for supplying electrical energy to the bus bars and through the conductive coating.
REFERENCES:
patent: 3313920 (1967-04-01), Gallez
patent: 3475588 (1969-10-01), McMaster
patent: 3621441 (1971-11-01), Hudnall et al.
patent: 4385226 (1983-05-01), Sauer
patent: 4388522 (1983-06-01), Boaz
patent: 4543466 (1985-09-01), Ramus
Ramus Kevin J.
Reid Patricia B.
Tweadey Robert F.
Bartis Anthony
Ford Motor Company
Johnson William E.
Sadler Clifford L.
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