Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-06-21
2011-06-21
Arbes, C. J (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S610100, C029S745000, C029S846000, C338S308000, C438S010000
Reexamination Certificate
active
07963026
ABSTRACT:
A method for forming an electrical heating element by flame spraying a metal/metallic oxide matrix, wherein a flame sprayed metal/metallic oxide matrix is deposited onto an insulating or conductive substrate such as to have a higher resistance than is required for a designed use, and an intermittently pulsed high voltage DC supply is applied across the matrix such as to produce continuous electrically conductive paths through the matrix which permanently increase the overall conduction and simultaneously reduce the overall resistance of the metal/metallic matrix to achieve a desired resistance value.
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Arbes C. J
Guerra David A.
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