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US 4,900,417 AGranted
Nichrome resistive element and method of making same
AssigneeDale Electronics, Inc.
InventorCharles T. Plough, Jr.
Life of this patent
Estimating the term…
Abstract
A resistive element consisting of a metal film, or metal film substitute, comprised of nickel and chromium and which may include aluminum. To this element is added a member of the group consisting essentially of a rare earth element and a transitional element.
Claims15
The method of making an electrical resistor including an insulating substrate having a supporting surface a resistance element on said supporting surface, said resistance element containing 30% by weight to 70% by weight nickel and 30% by weight to 70% by weight chromium;
- adding a substance selected from the group of elements consisting essentially of aluminum, a transitional element, and a rare earth element in a small but effective amount;
- whereby said resistance element provides a barrier against impurities, inhibits corrosion and provides electrical stability to said electrical resistor.
Dependencies are inferred from the claim text.