Coating processes – Electrical product produced – Metal coating
Patent
1981-10-19
1983-10-18
Lawrence, Evan K.
Coating processes
Electrical product produced
Metal coating
427264, 427287, 427319, 427422, 427424, B05D 102, B05D 310, B05D 512
Patent
active
044105649
ABSTRACT:
A method for fabricating heat emitting plates permits such plates to be designed to have a wide variety of thermal emission characteristics. A metal plate is coated with dielectric material on both sides and then heated to 300.degree. to 400.degree. C. at which point it is sprayed by a molten conductive metal. The thickness of the molten conductive metal on the dielectric coating can be varied along the length of the plate by varying the speed of the mutual displacement between the spraying means and the plate during the spraying operation. A protective pattern is painted or otherwise deposited on the sprayed metal which is then subjected to a corrosive bath to eliminate all of the sprayed metal except that which is overlaid by the protective coating. The protective coating is then removed leaving a heating element of desired configuration to achieve the desired thermal emission characteristics of the plate. More than one heating element may be formed on any plate surface and each of such heating elements can be connected to different voltage levels to achieve different heating characteristics.
REFERENCES:
patent: 2689803 (1954-09-01), Ackerman
patent: 3109228 (1963-11-01), Dyke et al.
patent: 4194042 (1980-03-01), Dates et al.
Lawrence Evan K.
Raivi S.A.
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